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| PMC-Sierra,Inc. PM7384 FREEDM-84P672 Frame Engine and Data Link Manager FEATURES * Single-chip multi-channel HDLC controller with a 66 MHz, 32 bit PCI 2.1 compatible bus for configuration, monitoring and transfer of packet data. * On-chip DMA controller with scatter/ gather capabilities. * Supports up to 672 bi-directional HDLC channels assigned to a maximum of 84 channelised or unchannelised links conveyed via a 19.44 MHz Scalable Bandwidth Interconnect (SBITM) interface. * Data on the SBI interface is divided into three Synchronous Payload Envelopes (SPEs). Each SPE can be configured independently to carry data for either 28 T1/J1 links, 21 E1 links, or one unchannelised DS-3 link. * Supports three bi-directional HDLC channels each assigned to an unchannelised link with arbitrary rate link of up to 51.84 MHz when SYSCLK is running at 45 MHz. Each link may be configured individually to replace one of the SPEs conveyed on the SBI interface. * For each channel, the HDLC receiver supports programmable flag sequence detection, bit de-stuffing and frame check sequence validation. The receiver supports the validation of both CRC-CCITT and CRC-32 frame check sequences. * For each channel, the HDLC transmitter supports programmable flag sequence generation, bit stuffing and frame check sequence generation. The transmitter supports the generation of both CRC-CCITT and CRC-32 frame check sequences. The transmitter also aborts packets under the direction of the host or automatically when the channel underflows. * Provides 32 Kbytes of on-chip memory for partial packet buffering in both the transmit and receive directions. This memory may be configured to support a variety of different channel configurations from a single channel with 32 Kbytes of buffering to 672 channels, each with a minimum of 48 bytes of buffering. * Provides a standard five signal P1149.1 JTAG test port for boundary scan board test purposes. * Supports 3.3 Volt I/O on non-PCI signals. Supports 3.3 Volt PCI signaling environment. * 352 pin enhanced ball grid array (SBGA) package. APPLICATIONS * * * * * * PPP interfaces for routers. Internet/Edge Routers. Frame Relay/Multiservice Switches. Packet-based DSLAM equipment. Remote Access Concentrators. Multiservice Access Concentrators. BLOCK DIAGRAM PMCTEST C1FPOUT C1FP FASTCLK REFCLK SPE3_EN SPE2_EN SPE1_EN SYSCLK RSTB RCLK[2:0] RD[2:0] AD[31:0] C/BEB[3:0] PAR FRAMEB TRDYB IRDYB STOPB DEVSELB IDSEL LOCKB REQB GNTB PERRB SERRB PCIINTB PCICLK PCICLKO M66EN DDATA[7:0] DPL DV5 DDP SBI Extract Receive Channel Assigner (RCAS672) Receive HDLC Processor (RHDL672) Receive DMA Controller (RMAC672) Performance Monitor (PMON) ADATA[7:0] APL AV5 ADP AJUST_REQ AACTIVE ADETECT[1:0] TD [2:0] TCLK[2:0] Transmit Channel Assigner (TCAS672) Transmit DMA Controller (TMAC672) PCI Controller (GPIC672) SBI Insert Transmit HDLC Processor (THDL672) JTAG TRSTB TMS TCK TD1 PMC-1991024 (r2) PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE TD0 (c) 2001 PMC-Sierra, Inc. PM7384 FREEDM-84P672 Frame Engine and Data Link Manager TYPICAL APPLICATION MULTISERVICE APPLICATION PCI Bus AAL5 SAR Frame Relay Interworking PM7384 FREEDM84P672 Any-PHY (Cell) SBI Bus Packet Memory Microprocessor OC-3 PM5342 SPECTRA-155 PM8316 TEMUX-84 PM7341 S/UNI-IMA-84 PM73122 AAL1gator-32 N X DS-3 CHANNELIZED INTERFACE Fractional DS-3 SBI Bus DS-3 LIU PCI Bus Packet Memory DS-3 LIU PM8316 TEMUX-84 PM7384 FREEDM84P672 Microprocessor DS-3 LIU Head Office: PMC-Sierra, Inc. 8555 Baxter Place Burnaby, B.C. V5A 4V7 Canada Tel: 604.415.6000 Fax: 604.415.6200 To order documentation, send email to: document@pmc-sierra.com or contact the head office, Attn: Document Coordinator All product documentation is available on our web site at: http://www.pmc-sierra.com For corporate information, send email to: info@pmc-sierra.com PMC-1991024 (r2) (c) 2001 PMC-Sierra, Inc. All rights reserved. August 2001 FREEDM-84P672, AAL1gator-32, SBI, TEMUX-84, Any-PHY, and PMC-Sierra are trademarks of PMC-Sierra, Inc. PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE |
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