Sony Walkman PCM-M1 Service Manual page 33

• IC505 CXP87540-046R
Pin No. Pin Name I/O
1 TURBO
2 CAPDIR
3 CMR–
4 CMR+
5 CMRSTBY
6 HPVCNT
7 XADSTBY
8 XDASTBY
9 VOLDT
10 XVOLCK
11 XVOLCS
12 AVCONT
13 FS0
14 XVCOSB
15 FS1
16 MVCNT
17 XLIMON
18 SBPM
19 DALD
20 XAGCCS
21 XLINE
22 XHPIN
23 XLPIN
24 XAUTO
25 XAVLS
26 XLIMSW
27 XMPIN
28 ACDC
29 THIN
30 RECINH
31 XCASIN
32 XCASLK
33 XRE3
34 XRE2
35 XRE1
36 XRE0
37 GND
38 XRESET
39 VSS
40 XTAL
41 EXTAL
42 XPWMSTBY
43 XCAPSTBY
44 XDRMSTBY
45 DRMBR
46 SBSY
47 S11
48 S01
49 XSCK1
50 CS0
O Capstan turbo (Power on = for Capstan high speed rotation).
O Capstan direction: reverse.
— Control motor -.
O Control motor +.
O Control motor standby.
O Headphone power on.
O A/D converter STANDBY.
O D/A converter standby.
O VOL. & AGC EVR, REC current adjustment - D/A converter data.
I VOL. & AGC EVR, REC current adjustment - D/A converter clock.
O VOLUME EVR chip select.
I Audio PB block power control output. (on at "H").
— DA converter de-emphasis SW0.
I Analog PLL VCO standby.
O DA converter de-emphasis SW1.
O Audio record block power control output. (on at "H").
I MIC limiter on.
O SBPM input (from CXD2607).
O REC current adjust D/A converter data latch output.
O AGC EVR chip select output.
I MIC/line select SW (low = line).
I Headphone plug SW detection.
O Line out plug SW detection.
O REC mode manual/auto select SW (key input) (low: AUTO).
O AVLS SW input.
O Limiter SW input.
O MIC plug SW input.
O AC/DC SW input; BATTERY IN = high.
O Thinner tape identification SW input.
I REC inhibit recognition SW input.
O Cassette existence SW input.
I Cassette compartment lock SW input.
O Rotary encoder SW input-3.
I Rotary encoder SW input-2.
I Rotary encoder SW input-1.
I Rotary encoder SW input-0.
I GND.
— Reset input.
O GND.
O 11.2896 MHz clock.
O 11.2896 MHz clock.
I PWM driver standby.
O Capstan driver standby.
I Drum driver standby.
I Drum brake.
I CXD2607 (DSP) sub-sync signal input.
O CXD2607/NVRAM communication data input.
O CXD2607/NVRAM communication data output.
I CXD2607/NVRAM communication clock input.
I GND.
Description
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