Ic Pin Function Description - Sony HCR-S7AV Service Manual

7-9. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC310 PT8300-S (SYSTEM CONTROL)
Pin No. Pin Name
1 VSS
2 RESET_B
3 CLK
4 LATCH
5 – 8 P15 – P12
9 P11
10 P10
11 P9
12 P8
13 LATCHO
14 CLKO
15 DO1
16 DI2
17 P7
18 P6
19 P5
20 P4
21 P3
22 P2
23 P1
24 P0
25 DO2
26 DI1
27 PULLUP
28 VCC
I/O
—
Ground terminal
I Reset signal input terminal
I
Serial data transfer clock signal input from the CD player section (CDP-S3)
I
Serial data latch pulse signal input from the CD palyer section (CDP-S3)
I
Not used (fixed at "L")
I AMS signal input terminal
I
Detection input from the deck-A half detect switch
I
Detection input from the deck-B play detect switch
I
Detection input from the deck-A play detect switch
O Serial data latch pulse output to the PT8300-S (IC311)
O
Serial data transfer clock signal output to the PT8300-S (IC311)
O
Serial data output to the PT8300-S (IC311)
I
Serial data input from the PT8300-S (IC311)
Tape deck relay on/off control signal output to the µPC1330H (IC302)
O
O
ALC on/off control signal output to the HA12226F (IC301)
O
Deck-A/B selection signal output to the HA12226F (IC301)
O
EQ high/normal selection signal output to the HA12226F (IC301)
O Recording bias on/off control signal output to the HA12226F (IC301)
O
Recording muting on/off control signal output to the HA12226F (IC301)
O
Dolby NR on/off selection signal output to the HA12226F (IC301)
O
Tape deck line muting on/off control output to the HA12226F (IC301)
O Serial data output to the CD player section (CDP-S3)
I
Serial data input from the CD player section (CDP-S3)
I
P8 to P15 Control pin for pull-up resisitor (fixed at "L")
—
Power supply terminal (+5V)
Description
Not used
"L": AMS in
"H": cassette in, "L": no cassette
"H": deck-B play
"H": deck-A play
TC-S3
19