Sony HCD-RG550 Service Manual page 22

HCD-RG550/RG660
• IC310 BU2099FV (BASS BOOST CONTROLLER) (MAIN BOARD)
Pin No. Pin Name
1 VSS
2 NC
3 DATA
4 CLOCK
5 LCK
6 to 8 NC
9 MOTOR VCC
10 SOL A
11 SOL B
12 LINE OUT MUTE
13 CD MUTE
14 to 16 CONT 1 to 3
17 NC
18 SO
19 OE
20 VDD
22
I/O
— Ground pin
— Not used. (Open)
I Serial data input from the multi controller
I Serial data transfer clock signal input from the system controller
I Serial data latch pulse clock signal input from the system controller
— Not used. (Open)
O Motor power control signal output "L": motor power on
O SOL-A control signal output
O SOL-B control signal output
O Line out mute signal output terminal "H": mute on
O CD mute signal output terminal "H": mute on
O Bass boost control signal output "H": bass boost
— Not used. (Open)
O Serial data output Not used. (Open)
— Not used. (Connect to ground.)
— Power supply pin (+3.3 V)
Pin Description