Sony SPP-A941 Service Manual page 33

Pin No. Pin Name
51 MOUT2/FSC
52 MIN
53 VDD3V1
54 TST
55 RSTIN
56 SP EN
57 FSK
58 FSO
59 FSI
60 GPC
61 VSS3V2
62 CS
63 RON
64 WRN
65 to 74 NC
75 to 77 COL0 to COL2
78 to 80 COL3 to COL5
I/O
I/O
Not used
I
Voltage detect signal input from voltage detect (Q1)
—
Power supply terminal (+3V) (digital system)
I
Setting terminal for the test mode Normally: fixed at "L" "H": test mode
I
Reset signal input from the reset signal generator (Q3) "H": reset
O Speaker output on/off control signal output to the speaker amp (U6)
O
Serial data transfer clock signal output to the EEPROM (U3)
O
Serial data output to the EEPROM (U3)
I
Serial data input from the EEPROM (U3)
O GP clock output terminal Not used (open)
—
Ground terminal
O
Chip select signal output to the EEPROM (U3) "L": select, "H": un-select
—
Not used (open)
— Not used (open)
—
Not used (open)
I
Key return signal input from the key matrix
I
Key return signal input from the key matrix Not used
Description
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