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1 of 25 april 10, 2001 ? 2001 integrated device technology, inc. dsc 4952 block diagram block diagram block diagram block diagram the idt logo is a registered trademark and rc32134, rc32364, rc64145, rc64474, rc64475, rc4650, rc4640, rc4600,rc4700 rc3081, r c3052, rc3051, rc3041, riscontroller, and riscore are trade- marks of integrated device technology, inc. system control coprocessor (cpo) data cache (lockable) 64-bit 330 mips instruction cache (lockable) 16kb 16kb riscore4000 125 mflops single/double fpa 32-/64-bit synchronized system interface precision control bus instruction bus data bus cpu core features features features features high performance 64-bit microprocessor, based on the riscore4000 ? minimized branch and load delays, through streamlined 5-stage scalar pipeline. ? single and double precision floating-point unit ? 125 peak mflop/s at 250 mhz ? 330 dhrystone mips at 250 mhz ? flexible rc4700-compatible mmu ? joint tlb on-chip, for virtual-to-physical address mapping on-chip two-way set associative caches ? 16kb instruction cache (i-cache) ? 16kb data cache (d-cache) optional i-cache and d-cache locking (per set), provides improved real-time support enhanced, flexible bus interface allows simple, low-cost design ? 64-bit bus interface option, 1000mb/s bandwidth support ? 32-bit bus interface option, 500mb/s bandwidth support ? sdram timing protocol, through delayed data in write cycles ? rc4000/rc5000 family bus-protocol compatibility ? bus runs at fraction of pipeline clock (1/2 to 1/8) implements mips-iii instruction set architecture (isa) 3.3v core with 3.3v i/o software compatible with entire riscontroller series of embedded microprocessors industrial temperature range support active power management ? powers down inactive units, through sleep-mode feature 100% pin compatibility between rc64574, rc64474 and rc4640 100% pin compatibility between rc64575, rc64475 and rc4650 rc64474 available in 128-pin qfp package, for 32-bit only systems rc64475 available in 208-pin qfp package, for full 64/32 bit systems simplified board-level testing, through full joint test action group (jtag) boundary scan windows? ce compliant rc64474 ? rc64475 ? riscontroller tm embedded 64-bit microprocessor, based on riscore4000 tm
2 of 25 april 10, 2001 rc64474? rc64475? device overview device overview device overview device overview 1 1 1 1 extending integrated device technology?s (idt) riscore4000 based choices (see table 1), the rc64474 and rc64475 are high perfor- mance 64-bit microprocessors targeted towards applications that require high bandwidth, real-time response and rapid data processing and are ideal for products ranging from internetworking equipment (switches, routers) to multimedia systems such as web browsers, set-top boxes, video games, and windows ? ce based products. these processors are rated at 330 dhrystone mips and 125 million floating point operations per second, at 250 mhz. the internal cache bandwidth for these devices is over 3gb/second. the 64-bit external bus bandwidth is at more than 1000mb/s, and the 32-bit external bus bandwidth is at 500mb/s. the rc64474 is packaged in a 128-pin qfp footprint package and uses a 32-bit external bus, offering the ideal combination of 64-bit processing power and 32-bit low-cost memory systems. the rc64475 is packaged in a 208-pin qfp footprint package and uses the full 64-bit external bus. the rc64475 is ideal for applications requiring 64-bit performance and 64-bit external bandwidth. idt?s riscore4000 is a 250mhz 64-bit execution core that uses a 5-stage pipeline, eliminating the ?issue restrictions? associated with other more complex pipelines. the riscore4000 implements the mips-iii instruction set architecture (isa) and is upwardly compatible with applications that run on earlier generation parts. implementation of the mips-iii architecture results in 64-bit opera- tions, improved performance for commonly used code sequences in 1. detailed system operation information is provided in the rc64474/rc64475 user?s manual. operating system kernels, and faster execution of floating-point intensive applications. the riscore4000 integer unit implements a load/store architecture with single cycle alu operations (logical, shift, add, subtract) and an autonomous multiply/divide unit. the alu consists of the integer adder and logic unit. the adder performs address calculations in addition to arithmetic operations, and the logic unit performs all of the processor?s logical and shift operations. each unit is highly optimized and can perform an operation in a single pipeline cycle. both 32- and 64-bit data operations are performed by the riscore4000, utilizing 32 general purpose 64-bit registers (gpr) that are used for integer operations and address calculation. a complete on-chip floating-point co-processor (cp1), which includes a floating-point register file and execution units, forms a ?seamless? interface, decoding and executing instructions in parallel with the integer unit. cp1?s floating-point execution units support both single and double precision arithmetic?as specified in the ieee standard 754? and are separated into a multiply unit and a combined add/convert/ divide/square root unit. overlap of multiplies and add/subtract is supported, and the multiplier is partially pipelined, allowing the initiation of a new multiply instruction every fourth pipeline cycle. the floating-point register file is made up of thirty-two 64-bit regis- ters. the floating-point unit can take advantage of the 64-bit wide data cache and issue a co-processor load or store doubleword instruction in every cycle. the riscore4000?s system control coprocessor (cp0) registers are also incorporated on-chip and provide the path through which the virtual memory system?s page mapping is examined and changed, exceptions are handled, and any operating mode selections are controlled. riscore4000/riscore5000 family of socket compatible processors riscore4000/riscore5000 family of socket compatible processors riscore4000/riscore5000 family of socket compatible processors riscore4000/riscore5000 family of socket compatible processors table 1 riscore4000/riscore5000 processor family 32-bit processors 64-bit processors rc4640 rc64474 rc64574 rc4650 rc64475 rc64575 cpu 64-bit riscore4000 w/ dsp extensions 64-bit riscore4000 64-bit riscore5000 w/ dsp extensions 64-bit riscore4000 w/ dsp extensions 64-bit riscore4000 64-bit riscore5000 w/ dsp extensions performance >350mips >330mips >440mips >350mips >330mips >440mips fpa 89 mflops, single pre- cision only 125 mflops, single and double precision 666 mflops, single and double precision 89 mflops, single pre- cision only 125 mflops, single and double precision 666 mflops, single and double precision caches 8kb/8kb, 2-way, lock- able by set 16kb/16kb, 2-way, lockable by set 32kb/32kb, 2-way, lockable by line 8kb/8kb, 2-way, lock- able by set 16kb/16kb, 2-way, lockable by set 32kb/32kb, 2-way, lockable by line external bus 32-bit 32-bit, superset pin compatible w/rc4640 32-bit, superset pin compatible w/rc4640, rc64474 32- or 64-bit 32-or 64-bit, super- set pin compatible w/ rc4650 32-or 64-bit, super- set pin compatible w/ rc4650, rc64475 voltage 3.3v 3.3v 2.5v 3.3v 3.3v 2.5v frequencies 100-267 mhz 180-250 mhz 200-333 mhz 100-267 mhz 180-250 mhz 200-333 mhz packages 128 pqfp 128 qfp 128 qfp 208 qfp 208 qfp 208 qfp mmu base-bounds 96 page tlb 96 page tlb base-bounds 96 page tlb 96 page tlb key features cache locking, on- chip mac, 32-bit external bus cache locking, jtag, syncdram mode, 32- bit external bus cache locking, jtag, syncdram mode, 32- bit external bus cache locking, on- chip mac, 32-bit & 64 bit bus option cache locking, jtag, syncdram mode, 32- 64- bit bus option cache locking, jtag, syncdram mode, 32- 64- bit bus option
3 of 25 april 10, 2001 rc64474? rc64475? a secure user processing environment is provided through the user, supervisor, and kernel operating modes of virtual addressing to system software. bits in a status register determine which of these modes is used. if configured for 64-bit virtual addressing , the virtual address space layout becomes an upwardly compatible extension of the 32-bit virtual address space layout. figure 1 is an illustration of the address space layout for the 32-bit virtual address operation. the rc64474/rc64475?s memory management unit (mmu) controls the virtual memory system?s page mapping and consists of a translation lookaside buffer (tlb) used for the virtual memory-mapping subsystem. this large, fully associative tlb maps 96 virtual pages to their corresponding physical addresses. the tlb is organized as 48 pairs of even-odd entries and maps a virtual address and address space identi- fier into the large, 64gb physical address space. to assist in controlling the amount of mapped space and the replacement characteristics of various memory regions, two mechanisms are provided. first, the page size can be configured on a per-entry basis , to map a page size of 4kb to 16mb (in increments of 4x). the second mechanism controls the replacement algorithm, when a tlb miss occurs. a random replacement algorithm is provided to select a tlb entry to be written with a new mapping; however, the processor provides a mechanism whereby a system specific number of mappings 0xffffffff 0xe0000000 kernel virtual address space (kseg3) mapped, 0.5gb 0xdfffffff supervisor virtual address space (sseg) mapped, 0.5gb 0xc0000000 0xbfffffff 0xa0000000 uncached kernel physical address space (kseg1) unmapped, 0.5gb 0x9fffffff 0x80000000 cached kernel physical address space (kseg0) unmapped, 0.5gb 0x7fffffff 0x00000000 user virtual address space (useg) mapped, 2.0gb figure 1 kernel mode virtual addressing (32-bit mode) can be locked into the tlb and avoid being randomly replaced, which facilitates the design of real-time systems, by allowing deterministic access to critical software. the tlb also contains information to control the cache coherency protocol, and cache management algorithm for each page. however, hardware-based cache coherency is not supported. the rc64474 and rc64475 enhance idt?s entire riscore4000 series through the implementation of features such as boundary scan, to facilitate board level testing; enhanced support for syncdram, to simplify system implementation and improve performance. the rc64474/475 processors offer a direct migration path for designs based on idt?s rc4640/rc4650 processors 2 , through full pin and socket compatibility. also, full 64-bit-family software and bus- protocol compatibility ensures the rc64474/475 access to a robust development tools infrastructure, allowing quicker time to market. development tools development tools development tools development tools an array of hardware and software tools is available to assist system designers in the rapid development of rc64474/475 based systems. this accessibility allows a wide variety of customers to take full advan- tage of the device?s high-performance features while addressing today?s aggressive time-to-market demands. cache memory cache memory cache memory cache memory to keep the rc64474 and rc64475?s high-performance pipeline full and operating efficiently, on-chip instruction and data caches have been incorporated. each cache has its own data path and can be accessed in the same single pipeline clock cycle. the 16kb two-way set associative instruction cache (i-cache) is virtually indexed, physically tagged, and word parity protected. because this cache is virtually indexed, the virtual-to-physical address translation occurs in parallel with the cache access, further increasing performance by allowing both operations to occur simultaneously. the instruction cache provides a peak instruction bandwidth of 1000mb/sec at 250mhz. the 16kb two-way set associative data cache (d-cache) is byte parity protected and has a fixed 32-byte (eight words) line size. its tag is protected with a single parity bit. to allow simultaneous address transla- tion and data cache access, the d-cache is virtually indexed and physi- cally tagged. the data cache can provide 8 bytes each clock cycle, for a peak bandwidth of 2gb/sec. to lock critical sections of code and/or data into the caches for quick access, a ?cache locking? feature has been implemented. once enabled, a cache is said to be locked when a particular piece of code or data is loaded into the cache and that cache location will not be selected later for refill by other data. this feature locks a set (8kb) of instructions and/or data. table 2 lists the rc64474/475 instruction and data cache attributes. 2. to ensure socket compatibility, refer to table 8 and table 9 at back of data sheet.
4 of 25 april 10, 2001 rc64474? rc64475? table 2 rc64474/rc64475 instruction/data cache attributes system interfaces system interfaces system interfaces system interfaces the rc64475 supports a 64-bit system interface that is bus compat- ible with the rc4650 and rc64575 system interface. the system inter- face consists of a 64-bit address/data bus with 8 check bits and a 9-bit command bus that is parity protected. during 64-bit operation, rc64475 system address/data (sysad) transfers are protected with an 8-bit parity check bus, sysadc. when initialized for 32-bit operation, the rc64475?s sysad can be viewed as a 32-bit multiplexed bus that is protected by 4 parity check bits. the rc64474 supports a 32-bit system interface that is bus compat- ible with the rc4640. during 32-bit operation, sysad transfers are performed on a 32-bit multiplexed bus (sysad 31:0) that is protected by 4 parity check bits (sysadc 6:0). writes to external memory?whether they are cache miss write- backs, stores to uncached or write-through addresses?use the on-chip write buffer . the write buffer holds a maximum of four 64-bit addresses and 64-bit data pairs. the entire buffer is used for a data cache write- back and allows the processor to proceed in parallel with memory updates. included in the system interface are six handshake signals : rdrdy*, wrrdy*, extrqst*, release*, validout*, and validin*; six inter- rupt inputs, and a simple timing specification that is capable of trans- ferring data between the processor and memory at a peak rate of 1000mb/sec. a boot-time selectable option to run the system interface as 32-bits wide?using basically the same protocols as the 64-bit system?is also supported. characteristics instruction data size 16kb 16kb organization 2-way set associative 2-way set associative line size 32b 32b read unit 32-bits 64-bits write policy na write-back, write-through with or without write-allocate line transfer order sub-block order, for refill sub-block order, for load sequential order, for store miss restart after transfer of: entire line miss word parity per-word per-byte cache locking per set per set a boot-time mode control interface initializes fundamental processor modes. the boot-time mode control interface is a serial inter- face that operates at a very low frequency (masterclock divided by 256). this low-frequency operation allows the initialization information to be kept in a low-cost eprom; alternatively, the twenty-or-so bits could be generated by the system interface asic or a simple pal. the boot- time serial stream and configuration options are listed in table 3. the clocking interface allows the cpu to be easily mated with external reference clocks. the cpu input clock is the bus reference clock and can be between 25 and 125mhz. an on-chip phase-locked- loop (pll) generates the pipeline clock (pclock) through multiplication of the system interface clock by values of 2,3,4,5,6,7 or 8, as defined at system reset. this allows the pipeline clock to be implemented at a significantly higher frequency than the system interface clock. the rc64474/475 support single data (one to eight bytes) and 8-word block transfers on the sysad bus. the rc64474/475 implement additional write protocols that double the effective write bandwidth . the write re-issue has a repeat rate of 2 cycles per write. pipelined writes have the same 2-cycle per write repeat rate, but can issue an additional write after wrrdy* de- asserts. choosing a 32- or 64-bit wide system interface dictates whether a cache line block transaction requires 4 double word data cycles or 8 single word cycles as well as whether a single data transfer?larger than 4 bytes?must be divided into two smaller transfers. board-level testing during run-time mode is facilitated through the full jtag boundary scan facility. six pins?tdi, tdo, tms, tck, trst* and jtag32*?have been incorporated to support the standard jtag interface. system enhancement system enhancement system enhancement system enhancement to facilitate discrete interface to sdram , the rc64474/475 bus interface is enhanced during write cycles with a programmable delay that is inserted between the write address and the write data (for both block and non-block writes). the bus delay can be defined as 0 to 7 masterclock cycles and is activated and controlled through mode bit (17:15) settings selected during the reset initialization sequence. the ?000? setting provides the same write operations timing protocol as the rc4640, rc4650, and rc5000 processors.
5 of 25 april 10, 2001 rc64474? rc64475? serial bit description value & mode setting 255:18 reserved must be 0 17:15 wadrwdata_del write address to write data delay in master- clock cycles.? 000 0 cycles 001 1 cycle 010 2 cycles 011 3 cycles 100 4 cycles 101 5 cycles 110 6 cycles 111 7 cycles 14:13 drv_out output driver slew rate control. bit 14 is msb. affects only non-clock outputs. output driver strength: 10 100% strength (fastest) 11 83% strength 00 67% strength 01 50% strength (slowest) 12 system interface bus width 0 64-bit system interface 1 32-bit system interface 11 tmrinten disables the timer interrupt on int*[5] 0 enabled timer interrupt 1 disabled timer interrupt 10:9 non-block write selects non-block write type. bit 10 is msb. 00 rc4x00 compatible 01 reserved 10 pipelined writes 11 write re-issue 7:5 clock multiplier masterclock is multiplied internally to gener- ate pclock clock multiplier: 0 multiply by 2 1 multiply by 3 2 multiply by 4 3 multiply by 5 4 multiply by 6 5 multiply by 7 6 multiply by 8 7 reserved 8endbit specifies byte ordering 0 little endian 1 big endian 4:1 writeback data rate system interface data rate for block writes only: bit 4 is msb 64-bit: 9:15 reserved 8 dxxxdxxxdxxxdxxx 7 ddxxxxxxddxxxxxx 6 dxxdxxdxxdxx 5 ddxxxxddxxxx 4 ddxxxddxxx 3 dxdxdxdx 2 ddxxddxx 1 ddxddx 0 dddd 32-bit: 9:15 reserved 8 wxxxwxxxwxxxwxxxwxxxwxxxwxxxwxxx 7 wwxxxxxxwwxxxxxxwwxxxxxxwwxxxxxx 6 wxxwxxwxxwxxwxxwxxwxxwxx 5 wwxxxxwwxxxxwwxxxxwwxxxx 4 wwxxxwwxxxwwxxxwwxxx 3 wxwxwxwxwxwxwxwx 2 wwxxwwxxwwxxwwxx 1 wwxwwxwwxwwx 0 ? wwwwwwww 0 reserved must be zero table 3 boot-time mode stream
6 of 25 april 10, 2001 rc64474? rc64475? power management power management power management power management executing the wait instruction enables the processor to enter standby mode. the internal clocks will shut down, thus freezing the pipeline. the pll, internal timer, and some of the input pins (int[5:0]*, nmi*, extreq*, reset*, and coldreset*) will continue to run. once the cpu is in standby mode, any interrupt, including the internally gener- ated timer interrupt, will cause the cpu to exit standby mode. thermal considerations thermal considerations thermal considerations thermal considerations the rc64474/475 come in a qfp with a drop-in heat spreader and are guaranteed in a case temperature range of 0 to +85 c, for commercial temperature devices; - 40 to +85 for industrial tempera- ture devices. the type of package, speed (power) of the device, and airflow conditions affect the equivalent ambient temperature conditions that will meet this specification. the equivalent allowable ambient temperature, t a , can be calculated using the thermal resistance from case to ambient ( ? ca ) of the given package. the following equation relates ambient and case tempera- tures: t a = t c - p * ? ca where p is the maximum power consumption at hot temperature, calculated by using the maximum i cc specification for the device. typical values for ? ca at various airflows are shown in table 4. note that the rc64474/475 processors implement advanced power manage- ment, which substantially reduces the typical power dissipation of the device. data sheet revision history data sheet revision history data sheet revision history data sheet revision history december 1998: changed ordering code on 128-pin package from dq / dqi (industrial) to dz / dzi (industrial). january 1999: removed 5v tolerance capability and deleted 5v tolerant pin. february 1999: changed the package drawings to reflect the new 208-pin dp (dpi) and 128-pin dz (dzi) packages. may 1999: removed ?preliminary? status from data sheet. changes in dc electrical characteristics table. changes in pin description table. changes in clock parameters table. changes in system interface parameters table. september 1999: updated revision history section. ? ? ? ? ca airflow (ft/min) 0 200 400 600 800 1000 128 qfp 16 10 9 7 6 5 208 qfp 20 13 10 9 8 7 table 4 thermal resistance ( ? ? ? ? ca) at various airflows january 17, 2000: added ?with dsp extensions? in the cpu row under rc64574 and rc64575 columns in table 1. added ?lockable by line? in the caches row under rc64574 and rc64575 columns in table 1. revised data output and data output hold rows in system interface parameters table. february 10, 2000: revised values in table 4, thermal resistance. old values were: march 13, 2000: replaced existing figure in mode configuration interface reset sequence section with 3 reset figures. march 28, 2000: removed the symbol t dz from figure 3. april 17, 2000 : changed v ih value in 200mhz column from 2.0v to 0.7v cc . april 10, 2001 : in the data output and data output hold categories of the system interface parameters table, changed values in the min column for all speeds from 1.0 to 0. deleted output for loading ac testing diagram and added output loading for ac timing diagram (figure 8). ? ? ? ? ca airflow (ft/min) 0 200 400 600 800 1000 128 qfp 20 12 9 8 7 6 208 qfp 20 12 9 8 7 6
7 of 25 april 10, 2001 rc64474? rc64475? pin description table pin description table pin description table pin description table the following is a list of system interface pins available on the rc64474/475. pin names ending with an asterisk (*) are active when low. pin name type description system interface extrqst* i external request an external agent asserts extrqst* to request use of the system interface. the processor grants the request by asserting release*. release* o release interface in response to the assertion of extrqst* or a cpu read request, the processor asserts release* and signals to the request- ing device that the system interface is available. rdrdy* i read ready the external agent asserts rdrdy* to indicate that it can accept a processor read request. wrrdy* i write ready an external agent asserts wrrdy* when it can now accept a processor write request. validin* i valid input signals that an external agent is now driving a valid address or data on the sysad bus and a valid command or data iden- tifier on the syscmd bus. validout* o valid output signals that the processor is now driving a valid address or data on the sysad bus and a valid command or data identifier on the syscmd bus. sysad(63:0) i/o system address/data bus a 64-bit address and data bus for communication between the processor and an external agent. during address phases only, sysad(35:0) contains valid address information. the remaining sysad(63:36) pins are not used. the whole 64-bit sysad(63:0) may be used during the data transfer phase. in 32-bit mode and in the rc64474, sysad(63:32) is not used, regardless of endianness. a 32-bit address and data com- munication between processor and external agent is performed via sysad(31:0). sysadc(7:0) i/o system address/data check bus an 8-bit bus containing parity check bits for the sysad bus during data bus cycles. in 32-bit mode and in the rc64474, sysadc(7:4) is not used. the sysadc(3:0) contains check bits for sysad(31:0). syscmd(8:0) i/o system command/data identifier bus a 9-bit bus for command and data identifier transmission between the processor and an external agent. syscmdp i/o system command parity a single, even-parity bit for the syscmd bus. this signal is always driven low. clock/control interface masterclock i master clock master clock input establishes the processor and bus operating frequency. it is multiplied internally by 2,3,4,5,6,7,8 to gen- erate the pipeline clock (pclock). this clock must be driven by 3.3v (vcc) clock signals, regardless of the 5v tolerant pin setting. v cc p i quiet vcc for pll quiet v cc for the internal phase locked loop. v ss pi quiet v ss for pll quiet v ss for the internal phase locked loop. interrupt interface int*(5:0) i interrupt six general processor interrupts, bit-wise ored with bits 5:0 of the interrupt register. table 5 pin descriptions (page 1 of 2)
8 of 25 april 10, 2001 rc64474? rc64475? nmi* i non-maskable interrupt non-maskable interrupt, ored with bit 6 of the interrupt register. initialization interfac e v cc o ki v cc is ok when asserted, this signal indicates to the processor that the power supply has been above the vcc minimum for more than 100 milliseconds and will remain stable. the assertion of v cco k initiates the initialization sequence. coldreset* i cold reset this signal must be asserted for a power on reset or a cold reset. coldreset must be de-asserted synchronously with mas- terclock. reset* i reset this signal must be asserted for any reset sequence. it can be asserted synchronously or asynchronously for a cold reset, or synchronously to initiate a warm reset. reset must be de-asserted synchronously with masterclock. modeclock o boot-mode clock serial boot-mode data clock output at the system clock frequency divided by two hundred fifty-six. modein i boot-mode data in serial boot-mode data input. jtag interface tdi i jtag data in on the rising edge of tck, serial input data are shifted into either the instruction register or data register, depending on th e tap controller state. tdo o jtag data out on the falling edge of tck, the tdo is serial data shifted out from either the instruction or data register. when no data is shifted out, the tdo is tri-stated (high impedance). tck i jtag clock input an input test clock used to shift into or out of the boundary-scan register cells. tck is independent of the system and pro- cessor clock with nominal 40-60% duty cycle. tms i jtag command select the logic signal received at the tms input is decoded by the tap controller to control test operation. tms is sampled on the rising edge of tck. trst* i jtag reset the trst* pin is an active-low signal used for asynchronous reset of the debug unit, independent of the processor logic. during normal cpu operation, the jtag controller will be held in the reset mode, asserting this active low pin. when asserted low, this pin will also tristate the tdo pin. jtag32* i jtag 32-bit scan this pin is used to control length of the scan chain for sysad (32-bit or 64-bit) for the jtag mode. when set to vss, 32-bit bus mode is selected. in this mode, only sysad(31:0) are part of the scan chain. when set to vcc, 64-bit bus mode is selected. in this mode, sysad(63:0) are part of the scan chain. this pin has a built-in pull-down device to guarantee 32-bit scan, if it is left uncovered. jr_vcc i jtag vcc this pin has an internal pull-down to continuously reset the jtag controller (if left unconnected) bypassing the trst* pin. when supplied with vcc, the trst* pin will be the primary control for the jtag reset. pin name type description table 5 pin descriptions (page 2 of 2)
9 of 25 april 10, 2001 rc64474? rc64475? logic diagram ? rc64474/rc64475 logic diagram ? rc64474/rc64475 logic diagram ? rc64474/rc64475 logic diagram ? rc64474/rc64475 figure 2 illustrates the direction and functional groupings for the processor signals. figure 2 logic diagram for rc64474/rc64475 sysad(63:0) masterclock coldreset* reset* v cc p v ss p initialization interface interrupt system interface clock/control interface rc64474/ logic symbol 64 6 interface sysadc(7:0) 8 nmi * int*(5:0) jtag interface tdi tms trst* tdo handshake signals rc64475 tck rdrdy* wrrdy* extrqst* release* validin* validout* syscmd(8:0) syscmdp 9 vccok modeclock modein jtag32* jr_vcc
10 of 25 april 10, 2001 rc64474? rc64475? rc64475 208-pin qfp package pin-out rc64475 208-pin qfp package pin-out rc64475 208-pin qfp package pin-out rc64475 208-pin qfp package pin-out pin names followed by an asterisk (*) are active when low. for maximum flexibility and compatibility with future designs, n.c. pins should be left floating. pin function pin function pin function pin function 1 n.c. 53 jtag32* 105 n.c. 157 n.c. 2 n.c. 54 n.c. 106 n.c. 158 n.c. 3 n.c. 55 n.c. 107 n.c. 159 sysad59 4 n.c. 56 n.c. 108 n.c. 160 coldreset* 5 n.c. 57 syscmd2 109 n.c. 161 sysad28 6 n.c. 58 sysad36 110 n.c. 162 vcc 7 n.c. 59 sysad4 111 n.c. 163 v ss 8 n.c. 60 syscmd1 112 n.c. 164 sysad60 9n.c. 61v ss 113 n.c. 165 reset* 10 sysad11 62 v cc 114 sysad52 166 sysad29 11 v ss 63 sysad35 115 extrqst* 167 sysad61 12 v cc 64 sysad3 116 v cc 168 sysad30 13 syscmd8 65 syscmd0 117 v ss 169 v cc 14 sysad42 66 sysad34 118 sysad21 170 v ss 15 sysad10 67 v ss 119 sysad53 171 sysad62 16 syscmd7 68 v cc 120 rdrdy* 172 sysad31 17 v ss 69 sysad2 121 modein 173 sysad63 18 v cc 70 int5* 122 sysad22 174 v cc 19 sysad41 71 sysad33 123 sysad54 175 v ss 20 sysad9 72 sysad1 124 v cc 176 v cc ok 21 syscmd6 73 v ss 125 v ss 177 sysadc3 22 sysad40 74 v cc 126 release* 178 sysadc7 23 v ss 75 int4* 127 sysad23 179 n.c. 24 v cc 76 sysad32 128 sysad55 180 tdi 25 sysad8 77 sysad0 129 nmi* 181 trst* 26 syscmd5 78 int3* 130 v cc 182 tck 27 sysadc4 79 v ss 131 v ss 183 tms 28 sysadc0 80 v cc 132 sysadc2 184 tdo 29 v ss 81 int2* 133 sysadc6 185 v cc p 30 v cc 82 sysad16 134 sysad24 186 v ss p 31 syscmd4 83 sysad48 135 v cc 187 masterclock 32 sysad39 84 int1* 136 v ss 188 v cc 33 sysad7 85 v ss 137 sysad56 189 v ss table 6 rc64475 208-pin qfp package pin-out (page 1 of 2)
11 of 25 april 10, 2001 rc64474? rc64475? rc64474 128-pin qfp package pin-out rc64474 128-pin qfp package pin-out rc64474 128-pin qfp package pin-out rc64474 128-pin qfp package pin-out 34 syscmd3 86 v cc 138 sysad25 190 sysadc5 35 v ss 87 sysad17 139 sysad57 191 sysadc1 36 v cc 88 sysad49 140 n.c. 192 v cc 37 sysad38 89 int0* 141 v ss 193 v ss 38 sysad6 90 sysad18 142 n.c 194 sysad47 39 modeclock 91 v ss 143 sysad26 195 sysad15 40 wrrdy* 92 v cc 144 sysad58 196 sysad46 41 sysad37 93 sysad50 145 n.c. 197 v cc 42 sysad5 94 validin* 146 v cc 198 v ss 43 v ss 95 sysad19 147 v ss 199 sysad14 44 v cc 96 sysad51 148 sysad27 200 sysad45 45 n.c. 97 v ss 149 n.c. 201 sysad13 46 n.c. 98 v cc 150 jr_ v cc 202 sysad44 47 n.c. 99 validout* 151 n.c. 203 v ss 48 n.c. 100 sysad20 152 n.c. 204 v cc 49 n.c. 101 n.c. 153 n.c. 205 sysad12 50 n.c. 102 n.c. 154 n.c. 206 syscmdp 51 n.c. 103 n.c. 155 n.c. 207 sysad43 52 n.c. 104 n.c. 156 n.c. 208 n.c. pin function pin function pin function pin function 1 jtag32* 33 v cc 65 v cc 97 vcc 2 syscmd2 34 vss 66 sysad28 98 vss 3 vcc 35 sysad13 67 coldreset* 99 sysad19 4 vss 36 sysad14 68 sysad27 100 validin* 5 sysad5 37 vss 69 vss 101 vcc 6 wrrdy* 38 vcc 70 vcc 102 vss 7 modeclock 39 sysad15 71 jr_vcc 103 sysad18 8 sysad6 40 vss 72 sysad26 104 int0* 9 vcc 41 vcc 73 n.c. 105 sysad17 10 vss 42 sysadc1 74 vss 106 vcc 11 syscmd3 43 vss 75 n.c. 107 vss 12 sysad7 44 vcc 76 sysad25 108 int1* 13 syscmd4 45 masterclock 77 vss 109 sysad16 table 7 rc64474 128-pin qfp package pin-out (page 1 of 2) pin function pin function pin function pin function table 6 rc64475 208-pin qfp package pin-out (page 2 of 2)
12 of 25 april 10, 2001 rc64474? rc64475? socket compatibility?rc64474 & rc4640 socket compatibility?rc64474 & rc4640 socket compatibility?rc64474 & rc4640 socket compatibility?rc64474 & rc4640 to ensure socket compatibility between the rc4640 and the rc64474 devices, several pin changes are required, as shown below. 14 vcc 46 vssp 78 vcc 110 int2* 15 vss 47 vccp 79 sysad24 111 vcc 16 sysadc0 48 tdo 80 sysadc2 112 vss 17 syscmd5 49 tms 81 vss 113 int3* 18 sysad8 50 tck 82 vcc 114 sysad0 19 vcc 51 trst* 83 nmi* 115 int4* 20 vss 52 tdi 84 sysad23 116 vcc 21 syscmd6 53 vss 85 release* 117 vss 22 sysad9 54 sysadc3 86 vss 118 sysad1 23 vcc 55 vccok 87 vcc 119 int5* 24 vss 56 vss 88 sysad22 120 sysad2 25 sysccmd7 57 vcc 89 modein 121 vcc 26 sysad10 58 sysad31 90 rdrdy* 122 vss 27 syscmd8 59 vss 91 sysad21 123 syscmd0 28 vcc 60 vcc 92 vss 124 sysad3 29 vss 61 sysad30 93 vcc 125 vcc 30 sysad11 62 sysad29 94 extrqst* 126 vss 31 syscmdp 63 reset* 95 sysad20 127 syscmd1 32 sysad12 64 vss 96 validout* 128 sysad4 pin rc4640 rc64574/ rc64474 compatible to rv4640? comments 1 n.c jtag32* yes. pin has an internal pull-down, to enable 32-bit scan. can also be left a n.c. 48 v ss tdo yes. can be driven with v ss , if jtag is not needed. is tristated when trst* is low. 49 v ss tms yes. can be driven with v ss if jtag is not needed. 50 v ss tck yes. can be driven with v ss if jtag is not needed. 51 v ss trst* yes. can be driven with v ss if jtag is not needed. 52 v ss tdi yes. can be driven with v ss if jtag is not needed. 71 n.c. jr_v cc yes. can be left n.c. in rc64474, if jtag is not need. if jtag is needed, it must be driven to v cc . table 8 rc64574 socket compatibility to rc64474 and r4640 pin function pin function pin function pin function table 7 rc64474 128-pin qfp package pin-out (page 2 of 2)
13 of 25 april 10, 2001 rc64474? rc64475? socket compatibility?rc64475 & rc4650 socket compatibility?rc64475 & rc4650 socket compatibility?rc64475 & rc4650 socket compatibility?rc64475 & rc4650 absolute maximum ratings absolute maximum ratings absolute maximum ratings absolute maximum ratings note: stresses greater than those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress ra ting only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specificatio n is not implied. exposure to absolute maximum rating conditions for extended periods may affect reliability. recommended operation temperature and supply voltage recommended operation temperature and supply voltage recommended operation temperature and supply voltage recommended operation temperature and supply voltage pin rv4650 32-bit rc64575 32-bit rc64475 32-bit rv4650 64-bit rc64575 64-bit rc64475 64-bit compatible to rv4650? comments 53 n.c. jtag32* no connect jtag32* yes in 32-bit, this pin can be left unconnected because of internal pull-down. in 64-bit, this assumes that jtag will not be used. if using jtag, this pin must be at v cc . 150 n.c. jr_v cc no connect jr_v cc yes in rc64475, can be left a n.c, if jtag is not need. if jtag is needed, it must be driven to v cc . 180 n.c. tdi no connect tdo yes if jtag is not needed, can be left a n.c. 181 n.c. trst* no connect trst* yes if jtag is not needed, can be left a n.c. 182 n.c. tck no connect tck yes if jtag is not needed, can be left a n.c. 183 n.c. tms no connect tms yes if jtag is not needed, can be left a n.c. 184 n.c. tdo no connect tdio yes if jtag is not needed, can be left a n.c. table 9 rc64575 socket compatibility to rc64475 & rc4650 symbol rating rc64474/475 3.3v5% rc64474/475 3.3v5% unit commercial industrial v term terminal voltage with respect to gnd ?0.5 1 to +4.6 1. v in minimum = ?2.0v for pulse width less than 15ns. v in should not exceed v cc +0.5 volts. ?0.5 1 to +4.6 v t c operating temperature(case) 0 to +85 -40 to +85 c t bias case temperature under bias ?55 to +125 ?55 to +125 c t stg storage temperature ?55 to +125 ?55 to +125 c i in dc input current 20 2 2. when v in < 0v or v in > v cc 20 2 ma i out dc output current 50 3 3. not more than one output should be shorted at a time. duration of the short should not exceed 30 seconds. 50 3 ma grade temperature gnd rc64474/475 v cc commercial 0 c to +85 c (case) 0v 3.3v5% industrial -40 + 85 c (case) 0v 3.3v5%
14 of 25 april 10, 2001 rc64474? rc64475? dc electrical characteristics dc electrical characteristics dc electrical characteristics dc electrical characteristics commercial temperature range?rc64474/64475 (v cc = 3.3 5 %, t case = 0 c to +85 c) power consumption?rc64474 power consumption?rc64474 power consumption?rc64474 power consumption?rc64474 . parameter rc64474/rc64475 180mhz rc64474/rc64475 200mhz rc64474/rc64475 250mhz conditions minimum maximum minimum maximum minimum maximum v ol ? 0.1v ? 0.1v ? 0.1v |i out |= 20ua v oh v cc - 0.1v ? v cc - 0.1v ? v cc - 0.1v ? v ol ? 0.4v ? 0.4v ? 0.4v |i out |= 4ma v oh 2.4v ? 2.4v ? 2.4v ? v il ?0.5v 0.2v cc ?0.5v 0.2v cc ?0.5v 0.2v cc ? v ih 2.0v v cc + 0.5v 0.7v cc v cc + 0.5v 2.0v v cc + 0.5v ? i in ? 10ua ? 10ua ? 10ua 0 v in v cc c in ? 10pf ? 10pf ? 10pf ? c out ? 10pf ? 10pf ? 10pf ? i/o leak ? 20ua ? 20ua ? 20ua input/output leakage parameter rc64474 180mhz rc64474 200mhz rc64474 250mhz conditions typical 1 1. typical integer instruction mix and cache miss rates max typical 1 max typical 1 max system condition: 180/90mhz 200/100mhz 250/125mhz ? i cc standby ? 60 ma 2 2. these are not tested. they are the results of engineering analysis and are provided for reference only ?60 ma 2 ? 100 ma 2 c l = 0pf 3 3. guaranteed by design. ? 110 ma 2 ?110 ma 2 ? 110 ma 2 c l = 50pf active 530 ma 2 630 ma 2 600ma 2 700 ma 2 700 ma 2 850ma 2 c l = 0pf no sysad activity 3 630ma 2 750 ma 2 700 ma 2 850 ma 2 850ma 2 1000ma 2 c l = 50pf r4x00 compatible writes, t c = 25 o c 750 ma 2 1050 ma 4 4. these are the specifications idt tests to insure compliance. 850 ma 2 1200 ma 4 1000ma 2 1400ma 2 c l = 50pf pipelined writes or write re-issue, t c = 25 o c 3
15 of 25 april 10, 2001 rc64474? rc64475? power consumption?rc64475 power consumption?rc64475 power consumption?rc64475 power consumption?rc64475 timing characteristics?rc64474/rc64475 timing characteristics?rc64474/rc64475 timing characteristics?rc64474/rc64475 timing characteristics?rc64474/rc64475 figure 3 system clocks data setup, output, and hold timing parameter rc64475 180mhz rc64475 200mhz rc64475 250mhz conditions typical 1 1. typical integer instruction mix and cache miss rates max typical 1 max typical 1 max system condition: 180/90mhz 200/100mhz 250/125mhz ? i cc standby ? 60 ma 2 2. these are not tested. they are the results of engineering analysis and are provided for reference only. ? 60 ma 2 ? 100 ma 2 c l = 0pf 3 3. guaranteed by design. ? 110 m 2 a ? 110 ma 2 ? 110 ma 2 c l = 50pf active, 64-bit bus option 4 4. in 32-bit bus option, use rc64474 power consumption values. 720 ma 2 850 ma 2 850 ma 2 1000 ma 2 935 ma 2 1100 ma 2 c l = 0pf no sysad activity 3 850 ma 2 1000 ma 2 1000 ma 2 1200 ma 2 1100ma 2 1360ma 2 c l = 50pf r4x00 compatible writes, t c = 25 o c 1000 ma 2 1200 ma 5 5. these are the specifications idt tests to insure compliance. 1200 ma 2 1400 ma 5 1360 ma 2 1600 ma 2 c l = 50pf pipelined writes or write re-issue, t c = 25 o c 3 cycle 1 2 3 4 masterclock t mckhigh t mcklow t mckp sysad,syscmd driven d d d t dm t do sysad,syscmd received d d d d t ds t dh t doh sysadc control signal cpu driven validout* release* t do control signal cpu received rdrdy* wrrdy* extrqst* validin* t ds t dh nmi* int*(5:0) t doh sysadc * = active low signal
16 of 25 april 10, 2001 rc64474? rc64475? figure 4 standard jtag timing ac electrical characteristics ac electrical characteristics ac electrical characteristics ac electrical characteristics commercial temperature range rc64474/rc64475 (v cc =3.3v 5%; t case = 0c to +85 c) clock parameters clock parameters clock parameters clock parameters parameter 1 1. timings are measured from 1.5v of the clock to 1.5v of the signal. symbol test conditions rc64474/ rc64475 180mhz rc64474/ rc64475 200mhz rc64474/ rc64475 250mhz units min max min max min max pipeline clock frequency pclk 80 180 80 200 80 250 mhz masterclock high t mchigh transition 3ns 3 ? 3 ? 2.5 ? ns masterclock low t mclow transition 3ns 3 ? 3 ? 2.5 ? ns masterclock frequency ? ? 10 90 10 100 10 125 mhz masterclock period t mcp ? 11.1 100 10 100 8 100 ns clock jitter for masterclock t jitterin ? ? 250 ? 250 ? 250 ps masterclock rise time t mcrise ??2.5?2?2ns masterclock fall time t mcfall ??2.5?2?2ns modeclock period t modeckp ? ? 256* t mcp ? 256* t mcp ? 256* t mcp ns jtag clock input t tck ? 100 ? 100 ? 100 ? ns jtag clock high t tckhigh ? 40 ? 40 ? 40 ? ns jtag clock low t tcklow ? 40 ? 40 ? 40 ? ns jtag clock rise time t tckrise ??5?5?5ns jtag clock fall time t tckfall ??5?5?5ns tdi/ tms tdo tdo tdo trst* tck t3 t1 t2 t ds t dh t do t4 t tck notes to diagram: t1 = t tcklow t2 = t tckhigh t4 = t rst (reset pulse width) t3 = t tckfall > = 25 ns t5 t5 = t tckrise
17 of 25 april 10, 2001 rc64474? rc64475? capacitive load deration?rc64474/rc64475 capacitive load deration?rc64474/rc64475 capacitive load deration?rc64474/rc64475 capacitive load deration?rc64474/rc64475 system interface parameters system interface parameters system interface parameters system interface parameters note: operation of the rc64474/rc64475 is only guaranteed with the phase lock loop enabled. boot-time interface parameters boot-time interface parameters boot-time interface parameters boot-time interface parameters parameter symbol test conditions 180mhz 200mhz? 250mhz? units min max min max min max load derate c ld ? ? 2 ? 2 ? 2 ns/25pf parameter 1 1. timings are measured from 1.5v of the clock to 1.5v of the signal. symbol test conditions rc64474/ rc64475 180mhz rc64474/ rc64475 200mhz rc64474/ rc64475 250mhz units min max min max min max data output 2 2. capacitive load for all output timings is 50pf. t dm = min t do = max mode 14..13 = 10 0 3 3. guaranteed by design. 60 3 50 3 4.7 ns mode 14..13 = 11 0 3 60 3 50 3 4.7 ns mode 14..13 = 00 ?9?9?7ns mode 14..13 = 01 ?9?9?7ns data output hold t doh 4 4. 50pf loading on external output signals, fastest settings. also applies to jtag signals (trst*,tdo,tdi,tms) mode 14..13 = 10 0 3 ?0 3 ?0 3 ?ns mode 14..13 = 11 0 3 ?0 3 ?0 3 ?ns mode 14..13 = 00 0 3 ?0 3 ?0 3 ?ns mode 14..13 = 01 0 3 ?0 3 ?0 3 ?ns input data setup t ds t rise = 5ns t fall = 5ns 2?2?2?ns input data hold t dh 1.0?1.0?1.0?ns parameter symbol rc64474/ rc64475 180 mhz rc64474/ rc64475 200 mhz rc64474/ rc64475 250mhz units min max min max min max mode data setup t ds 3 ? 3 ? 3 ? master clock cycle mode data hold t dh 0 ? 0 ? 0 ? master clock cycle
18 of 25 april 10, 2001 rc64474? rc64475? mode configuration interface reset sequence mode configuration interface reset sequence mode configuration interface reset sequence mode configuration interface reset sequence figure 5 power-on reset figure 6 cold reset figure 7 warm reset masterclock vccok modeclock modein coldreset* reset* tds vcc tmds tds > 100ms tds 256 mclk cycles 2.3v tds bit 0 tmdh > 64k mclk cycles > 64 mclk cycles bit tds bit 1 256 cycles mclk (mclk) 255 2.3v master vccok modeclock modein coldreset* reset* vcc tds 256 cycles mclk tds tmds tds 256 mclk cycles tds > 100ms bit tmdh > 64k mclk cycles > 64 mclk cycles bit bit 256 cycles mclk 255 tds tds (mclk) 0 1 clock master vccok modeclock modein coldreset* reset* vcc tds tds 256 mclk cycles > 64 mclk cycles (mclk) clock
19 of 25 april 10, 2001 rc64474? rc64475? figure 8 output loading for ac timing 1.5v signal equivalent limp capacitance all signals 25 pf rc64474/rc64475 output . 50 ? 50 ?
20 of 25 april 10, 2001 rc64474? rc64475? rc64475 physical specifications rc64475 physical specifications rc64475 physical specifications rc64475 physical specifications the rc64475 is available in a 208-pin power quad (pquad) package.
21 of 25 april 10, 2001 rc64474? rc64475? rc64475 208-pin package (page 2) rc64475 208-pin package (page 2) rc64475 208-pin package (page 2) rc64475 208-pin package (page 2)
22 of 25 april 10, 2001 rc64474? rc64475? rc64474 128-pin package (page 1 of 3) rc64474 128-pin package (page 1 of 3) rc64474 128-pin package (page 1 of 3) rc64474 128-pin package (page 1 of 3)
23 of 25 april 10, 2001 rc64474? rc64475? rc64474 128-pin package (page 2 of 3) rc64474 128-pin package (page 2 of 3) rc64474 128-pin package (page 2 of 3) rc64474 128-pin package (page 2 of 3)
24 of 25 april 10, 2001 rc64474? rc64475? rc64474 128-pin package (page 3 of 3) rc64474 128-pin package (page 3 of 3) rc64474 128-pin package (page 3 of 3) rc64474 128-pin package (page 3 of 3)
25 of 25 april 10, 2001 rc64474? rc64475? corporate headquarters 2975 stender way santa clara, ca 95054 for sales: 800-345-7015 or 408-727-6116 fax: 408- 330 - 1748 www.idt.com for tech support: email: rischelp@idt.com phone: 408-492-8208 the idt logo is a registered trademark of integrated device technology, inc. ordering information ordering informationordering information ordering information valid combinations valid combinationsvalid combinations valid combinations idt79rc64v474 - 180, 200, 250 dz 128-pin qfp package, commercial temperature idt79rc64v475 - 180, 200, 250 dp 208-pin qfp package, commercial temperature idt79rc64v474 - 180, 200, 250 dzi 128-pin qfp package, industrial temperature idt79rc64v475 - 180, 200, 250 dpi 2 08-pin qfp package, industrial temperature idt79rcxx yy xxxx 999 a a operating voltage device type speed package temp range/ process v 474 180 200 dz blank commercial temperature (0c to +85c case) 128-pin qfp 180 mhz pclk 200 mhz pclk 3.3v +/-5% embedded processor industrial temperature (-40c to +85c case) product type 79rc64 64-bit embedded microprocessor 208-pin qfp dp 250 250 mhz pclk 475 i

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