Sony HCR-S7AV Service Manual page 130

TC-S3
• MAIN BOARD IC311 PT8300-S (LED DRIVE, MOTOR DRIVER)
Pin No. Pin Name
1 VSS
2 RESET_B
3 CLK
4 LATCH
5 P15
6 P14
7 P13
8 P12
9 P11
10 P10
11 P9
12 P8
13 LATCHO
14 CLKO
15 DO1
16 DI2
17 – 21 P7 – P3
22 P2
23 P1
24 P0
25 DO2
26 DI1
27 PULLUP
28 VCC
20
I/O
—
Ground terminal
I Reset signal input terminal
I
Serial data transfer clock signal input from the PT8300-S (IC310)
I
Serial data latch pulse input from the PT8300-S (IC310)
O
Not used (connected to pin 6)
O LED drive signal output of the B-FWD indicator (D302)
O
Not used (connected to pin 8)
O
LED drive signal output of the B-REV indicator (D303)
O
Not used (connected to pin q;)
O LED drive signal output of the A-REV indicator (D301)
O
Not used (connected to pin qs)
O
LED drive signal output of the A-FWD indicator (D300)
O
Not used (open)
O Not used (open)
O
Not used (open)
I
Not used (fixed at "L")
O
Not used (open)
O Not used (connected to pin wd)
O
Capstan motor on/off control signal output terminal
High/normal speed selection signal output of the capstan motor
O
"H": normal speed, "L": high speed
O
Serial data output to the PT8300-S (IC310)
I
Serial data input from the PT8300-S (IC310)
I
P8 to P15 Control pin for Pull-up resistor (fixed at "L")
—
Power supply terminal (+5V)
Description
Nor used
"L": LED on
"L": LED on
"H": motor on
"L": LED on
"L": LED on