Sony MZ-R5ST Service Manual page 53

• IC907 CXP84632-18Q (SYSTEM CONTROL) / RADIAL BOARD
Pin No. Pin Name I/O
1 DEEMP
2 MOTOR CONT
3 MSTOP
4 TXD
5 RXD
6 CHARGE LED
7 PCONT
8 LCD ON
9 BLON
10 OPT EN
11 OPT
12 LCD STB
13 LCD SCK
14 ~ 21 DB0-DB7
22 AC IN
23 XLION
24 XRELEASE
25 XLOCK
26 PLAY KEY
27 REC KEY
28 CLOCK KEY
29 POWER KEY
30 RST
31 EXTAL
32 XTAL
33 VSS
34 TX
35 TEX
36 AVSS
37 AVREF
38 KEY0
39 KEY1
40 KEY2
41 KEY3
42 KEY4
43 LI+MNT
44 AC
45 NC
46 BUF EN
47 SCS0
48 SCK0
49 SDI0
50 SDO0
O Emphasis ON/OFF switching signal output. 1: OFF.
O Motor (M931) speed control signal output.
O Motor (M931) stop signal output. 0: Motor stop.
— Not used. (Open).
— Not used. (Open).
O Control signal output to charge LED. 1: LED ON.
O Power supply control output. 1: Power supply ON.
O Power supply control output to LCD MODULE (LCD901). 1: LCD ON.
O Back-light ON/OFF switching signal output. 1: Back-light ON.
O Optical light output enable signal output.
O OPT1/OPT2 select signal output.
O Strobe signal output to LCD driver.
O Serial clock output to LCD driver.
O Data output to LCD driver.
I AC IN detection. 0: Active pull up.
I Detection input from LION switch (S951). 0: Li battery.
I Detection input from RELEASE switch (S953). 0: RELEASE switch ON.
I Detection input from XLOCK switch (S655).
I Playback key input.
I Record key input.
I CLOCK SET key input.
I POWER key input.
I System reset signal input.
— Terminal to which external system clock (10 MHz) crystal is connected.
— Terminal to which external system clock (10 MHz) crystal is connected.
— GND.
— Not used. (Open).
— Not used. (Open).
— GND terminal of A/D converter.
— Reference voltage input of A/D converter. (Connected VDD).
I A/D key input 0.
I A/D key input 1.
I A/D key input 2.
I A/D key input 3.
I A/D key input 4.
I Lithium ion battery + voltage monitor input.
I AC voltage value detection input (Sampling detection).
— Not used. (Open).
3 V → 5 V output switch signal output.
O
I Serial communication chip select signal input from system control (IC801).
I Serial clock input from system control (IC801).
O Serial communication output to system control (IC801).
I Serial communication input from system control (IC801).
Description
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