Sony ZS-XN30 Service Manual page 38

ZS-XN30
CONTROL BOARD IC801 TMP91CY22FG-5GH6 (SYSTEM CONTROLLER)
Pin No. Pin Name
1 VREFL
2 AVSS
3 AVCC
4
RW/ROM
5 PWM RF
6 PWM TE
7 EEP CSO
8 PWM FE
9 LD ON
10 K-SEL
11 3.3V REG
12 XRSTO
13
FOKI
14 SCORI
15 GFSI
16 XLATO
17 XSOEO
18 DATAO
19 SENSIN
20 CLKO
21 R-DATA
22 R-COUNT
23 R-CLOCK
24 AM0
25 DVCC
26 X2
27 DVSS
28 X1
29 AM1
30 RESET
31 SHIFT1
32 SHIFT2
33, 34 EMU0, EMU1
35 WP
36 AC-IN
37 CD DOOR
38 REMOTE
39 R-MUTE
40 R-CE
41 EEP-SDA
42 EEP-SCL
43 ALE
LCD-AD0 to
44 to 51
LCD-AD7
38
I/O Description
I Reference voltage input terminal (0V)
—
Ground terminal
—
Power supply terminal (+3.3V)
O CD-ROM/RW or LD on/off selection signal output terminal
O RF offset cancel PWM signal output terminal
O
Tracking error offset cancel PWM signal output terminal
O
Chip select signsl output terminal Not used
O
Focus error offset cancel PWM signal output terminal
Laser diode on/off control signal output to the automatic power control circuit
O
"H": laser diode on
O DNK selection signal input terminal Not used
I CD voltage detection signal input terminal
O System reset signal output to the CD DSP "L": reset
I Focus OK signal input from the CD DSP "L": NG, "H": OK
I Subcode sync (S0+S1) detection signal input from the CD DSP
I
Guard frame sync signal input from the CD DSP
O Serial data latch pulse output to the CD DSP
O
Serial data output enable signal output to CD DSP
O Serial data output to the CD DSP
I
Internal status (SENSE) signal input from the CD DSP
O
Serial data transfer clock signal output to the CD DSP
O
PLL serial data output terminal
I
PLL serial data input terminal
O
PLL serial data transfer clock signal output terminal
O Not used
—
Power supply terminal (+3.3V)
O System clock output terminal (4.19 MHz)
—
Ground terminal
I System clock input terminal (4.19 MHz)
O Not used
I
System reset signal input from the reset signal generator "L": reset
O Shift point terminal for oscillation frequency change
O Not used
O Not used
I
Key interruption processing start signal input terminal
O Not used
I CD lid open/close detection switch input terminal "L": CD lid is close
I
Remote control signal input terminal Not used
O Tuner muting on/off control signal output terminal "L": active
O PLL chip enable signal output terminal
I/O
Two-way serial data bus with the EEPROM
O Serial clock signal output terminal to the EEPROM
O Not used
O LCD serial data output terminal
"L": NG, "H": OK