Sony MZ-R91 Service Manual page 35

Pin No.
Pin Name
39
FFCLR
40
SLEEP
41
TSB EDGE
42 GND SW
43
XRST
44
VSS
45 XTAL
46 EXTAL
47 VDD
48 TSB SLV CTL
SPDL START
49
SW
OPEN CLOSE
50
SW
51 XSHOCK
52 FOK
53 SQSY
54 DQSY
55
XINT
56 T.MARK
57 REC WBL SW
58
SERON
59 XCHG
60
XTEST
61 SET CODE0
62
SET CODE1
63
SET CODE2
64
REG CTL PWM
65 VRM PWM
66
VC PWM
67
SPDL PWM
68 XIC RST
69
REC LED
70 SI1
71 SO1
72
SCK1
73
XHOLD SW
74
VDD
75 TEX
76
TX
77 VSS
78 VBKAN
79 S MON
I/O
O
Input latch output for starting signal to the MPC18A31FTA (IC901)
O
System sleep control signal output to the MPC18A31FTA (IC901) "H": sleep on
I
TSB slave edge detect signal input terminal
O Ground line switching signal output terminal
System reset signal input from the MPC18A31FTA (IC901) "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
—
Ground terminal
Main system clock output terminal (16.9344 MHz)
O
Main system clock input terminal (16.9344 MHz)
I
— Power supply terminal (+2.4V)
I/O
Two-way control signal bus with TSB slave circuit
O Spindle servo start switching signal output to the analog switch (IC504, 505)
Upper panel open/close detect switch (S801) input terminal (A/D input)
I
"L": upper panel close, "H": upper panel open
I Recording shock detect signal input from the CXD2660GA (IC502)
I Focus OK signal input from the CXD2660GA (IC502) "H": is input when focus is on ("L": NG)
Subcode Q sync (SCOR) input from the CXD2660GA (IC502)
I
"L" is input every 13.3 msec Almost all, "H" is input
Digital In U-bit CD format subcode Q sync (SCOR) input from the CXD2660GA (IC502)
I
"L" is input every 13.3 msec Almost all, "H" is input
I
Interrupt status input from the CXD2660GA (IC502)
I T MARK switch (S803) input terminal
O Stable control signal is output when recording
O
Series power supply control signal output to the MPC18A31FTA (IC901)
O Charge control signal output to the MPC18A31FTA (IC901)
I
Setting terminal for the test mode "L": test mode, normally: fixed at "H"
I Destination setting terminal Fixed at "L" in this set
I
Destination setting terminal Fixed at "L" in this set (US, canadian model: Not used (open))
I
Destination setting terminal Fixed at "L" in this set (US, canadian model: Not used (open))
O
Synchronizing external clock signal output to the MPC18A31FTA (IC901)
O VREM power supply voltage control PWM signal output to the MPC18A31FTA (IC901)
O
System power supply voltage control PWM signal output to the MPC18A31FTA (IC901)
O
Spindle servo drive voltage control PWM signal output to the MPC17A56FTA (IC601)
Reset signal output to the A/D, D/A converter (IC301), SN761056ADBT (IC501) and
O
CXD2660GA (IC502) "L": reset
O
REC LED drive signal output terminal "H": LED on
I Joint text data input from the remote commander with headphone
O Joint text data output to the remote commander with headphone
O
Joint data communication clock output to the remote commander with headphone
I
HOLD switch (S804) input terminal "L": hold on, "H": hold off
—
Power supply terminal (+2.4V)
Sub system clock input terminal Not used (open)
I
O Sub system clock output terminal Not used (open)
— Ground terminal
Sub power supply input terminal
I
Servo signal monitor input from the SN761056ADBT (IC501) (A/D input)
I
Description
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