1/6 ? semiconductor msm9802 demo board ? semiconductor msm9802 demo board msm9802 demonstration board board outline 3 6 rst 2 5 rnd 1 4 7 msm9802 !0
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ic1 cpu cr xt std osc3 i
gnd vr2 power sw off on +5v gnd msm9802 demo board tr amp e
sp. jack 5v gnd power source 20-pin connector fc20a2ms made by oki electric cable speaker jack vr1 u
how to use board q stand-alone/microcontroller interface selection jumper the stand-alone/microcontroller selection jumper is used to select the operation in stand-alone mode or the operation by a microcontroller interface. for the stand-alone operation, set the jumper wire up (to std). for the operation by a microcontroller interface, set the jumper wire down (to cpu). w ceramic oscillation/rc oscillation selection jumper the ceramic oscillation/rc oscillation selection jumper is used to select the operation by ceramic oscillation or by rc oscillation. for the operation by ceramic oscillation, set four jumper wires up (to xt). for the operation by rc oscillation, set four jumper wires down (to rc). e amp/tr selection jumper to amplify the analog signal output from aout by the amplifier ic (msc1157) on the board, set three jumpers up (to amp). to amplify by the transistor, set three jumpers down (to tr). e2d0067-27-40 this version: jan. 1998 previous version: may. 1997
2/6 ? semiconductor msm9802 demo board r 20-pin connector signals necessary for operation using the microcontroller are connected to the 20-pin connector. connector pin assignment is as follows: connector pin no. signal signal connector pin no. 1v dd i5/a2 11 2 xt/ cr 12 3 nc 13 4 cpu/ std reset 14 5nc st / rnd 15 6 i0/sw0 osc3 16 7 i1/sw1 nar/ busy 17 8 i2/sw2 gnd 18 9 i3/a0 gnd 19 10 i4/a1 gnd 20 v dd v dd t address setting switch when used in stand-alone mode, select a playback word using this hex switch. 0-7 in this hex switch correspond to a0-a2 in binary data. when a microcontroller is used, set the hex switch to 0. y frequency check pin (osc3) this pin is used to monitor the oscillation frequency of rc oscillation. u variable resistor (vr2) for adjusting the frequency of rc oscillation. this variable resistor can change the frequency of rc oscillation. when the resistor is turned clockwise, the frequency decreases. when the resistor is turned counterclockwise, the frequency increases. the frequency can be monitored by the check pin of y . adjust the oscillation frequency to 256 khz normally. i gnd pin o speaker output volume (vr1 used on a common base by amp/tr) this volume is used to adjust the sound level. when the vr is turned counterclockwise, the sound turns down. the v ref pin is used for sound volume adjustment. for the maximum sound volume, the gnd level is input to the v ref pin. for the minimum sound volume, the v dd level is input. !0 playback sw input interface when the stand-alone mode is used, press the 1-7 switches to playback voices corresponding to 1-7 of sw2-sw0. press the rnd switch on the center (random voice playback switch) to playback a voice randomly selected from 15 phrases corresponding to a0, sw2-sw0. if the rnd switch is pressed immediately after power on or reset signal input, the voice of the first phrase is played back first, then a random phrase is generated from the second time onward.
3/6 ? semiconductor msm9802 demo board ra1-ra3=100 k w c1, c8, c11=0.1 m f x1 : 4.096 mhz r1=5.1 k w c2=0.01 m f r2=240 w c3=30 pf q1 : hit8050 r3=150 k w c4,c5=30 pf or 2sd467 r4=100 k w c6=47 nf vr1, vr2=100 k w c7=10 m f d10 : 10d1 c9=4.7 m f c10=220 m f circuit diagram 1234 c1 5 d8 d7 d3 d6 d4 d5 d9 d1 d2 i0 / sw0 10 i2 / sw2 i1 / sw1 16 18 17 1 3 6 1 2 4 15 4 14 7 8 q1 c2 c6 9 5 13 12 11 ra2 ra2 d10 c10 c11 r1 sp+ sp- d11 2 67891011121314151617181920 1234567 r1 r2 r3 ra3 ra2 ra3 msm9802-xxxrs(18pin dip) msc1157rs(8pin dip) ra3 r3 r2 vr2 c3 c4 r4 r5 r6 r7 cpu/ std vr1 fc1 ra2 r4 rnd cpu std rst d12 com dec sw i0 / sw0 sp sp ain stby 6 3 5 2 7 48 i1 / sw1 i2 / sw2 i3 / a0 i4 / a1 i5 / a2 nar / busy st / rnd reset cpu / std v ref tr amp aout xt / cr osc3 osc3 osc3 gnd osc2 osc1 v dd v cc gnd vr sel v cc gnd d13 cr xt x1 + - c7 + - c9 + - c8 1 +5v power sw. gnd v cc v dd i0 / sw0 i1 / sw1 i2 / sw2 i3 / a0 i4 / a1 i5 / a2 xt/ cr reset st / rnd osc3 nar/ busy c5
4/6 ? semiconductor msm9802 demo board demonstration board layout silk drawing
5/6 ? semiconductor msm9802 demo board component side
6/6 ? semiconductor msm9802 demo board solder side
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