Aiwa IC-DP200, Руководство по обслуживанию

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IC, TMP87PP21DF
Pin No. Pin Name I/O Description
1 VSS – Ground.
2 XOUT O Resonator connecting pin for high frequency clock.
3XIN I Resonator connecting pin for high frequency clock.
4 RESET I/O Reset signal input or watchdog timer output/address trap reset output.
5 D-I2D I/O I
2
C bus serial data input/output.
6 D-I2C I/O I
2
C bus serial clock input/output.
7 TEST I Test pin for out-going test. (Connected to VSS)
8 D-POR I Power on reset.
9 ~ 16 D0 ~ D7 I/O Data input/output.
17 RTC-CLK O Output serial data clock to RTC IC.
18 D-EOD I End of DMA.
19 PRTW I Ready to write.
20 CS I Chip enable.
21 ALE I Address latch enable.
22 CLE I Command latch enable.
23RD I Read enable.
24 WR I Write enable.
25 R/B O Ready/busy.
26 D-PRTR I Ready to read.
27 D-PUP – Connected to VDD.
28 D-PCS O Chip select.
29 RTC-DATA I/O Serial data input/output to RTC IC.
30 DCEN I DC/DC enable.
31 D-PR O DMA request.
32 EL-CON O EL driver enable control.
33 SP-CON O Speaker control.
34 RTC-CE O Output chip enable to RTC IC.
35 USB-CON I/O USB D+ upstream port control.
36 KEY I Key matrix.
37 BATT-CHECK I Battery check.
38 VASS – Analog ground.
39 VAREF – Analog reference voltage.
40 VDD – Power supply (+5V).
41 HOLD I Hold switch detection input.
42 ERASE I Erase switch detection input.
43REC-IND – Not used.
44 USB-SCL I USB serial clock.
45 USB-SDA I USB serial data
46 USB-RESET O Power on reset.
47 USB-CABLE – Connected to transceiver 3.3V.
48 MUTE – Not used.
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