Diagrams; Ic Pin Descriptions - Sony HCD-GX25 Service Manual

5-1. IC PIN DESCRIPTIONS

• IC309 BU2099FV (MULTI CONTROLLER) (MAIN BOARD)
Pin No. Pin Name
1 VSS
2 NC
3 DATA
4 CLOCK
5 LCK
6 REC
7 BIAS
8 A/B
9 PB MUTE
10 REC MUTE
11 TUNER MUTE
12 LM-R (CD)
13 LM-L (CD)
14 TM-R (CD)
15 TM-L (CD)
16 SP RELAY
17 LINK/MATRIX
18 SO
19 OE
20 VDD
SECTION 5

DIAGRAMS

I/O
— Ground pin
— Not used. (Open)
I Serial data input from the tape mechanism controller
I Serial data transfer clock signal input from the system controller
I Serial data latch pulse clock signal input from the system controller
O Recording on/off control signal output "L": recording
O Recording bias on/off control signal output "L": bias on
Deck-A/B selection signal output to the deck-A/B select switch
O
"L": deck-B, "H": deck-A
Playback muting on/off control signal output to the recording/playback equalizer
O
amplifier "H": muting on
Recording muting on/off control signal output to the recording/playback equalizer
O
amplifier "L": muting on
O Tuner muting on/off control signal output to the tuner unit "H": muting on
O Loading motor drive signal output
O Loading motor drive signal output
O Table motor drive signal output
O Table motor drive signal output
O Front speaker on/off relay drive control signal output "L": front speaker on
O Surround speaker on/off relay drive control signal output "H": surround speaker on
O Serial data output to the bass boost controller
— Not used. (Connect to ground.)
— Power supply pin (+3.3 V)
HCD-GX25/RG220
Pin Description
23