Ic Pin Function Description - Sony HCD-GSX75 Service Manual

HCD-GSX75

7-20. IC Pin Function Description

• IC104 TC94A20F-CX4 D/A Converter, MP3 Decoder (CD Board)
Pin No. Pin Name
1 RESET
2 MIMD
3 MICS/AD0
4 MILP/AD1
5 MIDIO
6 MICK
7 MIACK/AD2
8 VDDT
9 SDO
10 BCKO/AD3
11 LRCKO/AD4
12 SDI0
13 BCKIA
14 LRCKIA
15 SDI1/AD5
16 BCKIB/CE
17 LRCKIB/OE
18 VDD
19 STANDBY
20 VSS
21 VSSL
22 VRAL
23 LO
24 VDAL
25 VDAR
26 RO
27 VRAR
28 VSSR
29 TESTP
30 CSK
31 to 34 PO0/AD12 to PO3/AD09
35 VDDT
36 PO4/AD8
37 PO5/AD7
38 PO6/AD6
39 PO7
40 VSS
41 FI0/AD13
42 FI1/AD14/VDDM
43 FI2/WR
44 FI3/AD16
45 VSSM
46, 47 PI0, PI1
48 VSS
49, 50 PI2/IO2, PI3/IO3
51 PI4/IO4
52 VDD
53 PI5/IO5
54 BOOT/IO6
55 TXO/IO7
46
I/O
I Reset input terminal "L": reset
I Microcomputer interface mode selection input "H": I2C, "L": TSB
I Microcomputer interface chip select signal input
I Microcomputer interface latch pulse input
I/O Serial data input/output
I Serial clock input
O Microcomputer interface acknowledge signal output
– Power supply (3.3V) for digital circuit
O Data output (open)
O Bit output (open)
O LR clock output (open)
I Data input 0
I Bit clock input A
I LR clock input A
I Data input 1 (fixed at "L")
I Bit clock input B (fixed at "L")
I LR clock input B (fixed at "L")
– Power supply (2.5V) for digital circuit
I Standby mode control signal input "H": STB, "L": normal (fixed at "L")
– Ground for digital circuit
– Ground for DAC Lch
– Reference voltage terminal for DAC Lch
O DAC Lch signal output
– Power supply (2.5V) for DAC Lch
– Power supply (2.5V) for DAC Rch
O DAC Rch signal output
– Reference voltage terminal for DAC Rch
– Ground for DAC Rch
I Terminal for test "H": test mode, "L": normal (fixed at "L")
O SPDIF signal output (open)
O General purpose output (open)
– Power supply (3.3V) for digital circuit
O General purpose output (open)
O General purpose output (open)
O General purpose output (open)
O Interrupt request signal output to the system control (IC801)
– Ground for digital circuit
I External interrupt signal input (fixed at "L")
– Power supply (2.5V) for the internal 1Mbit SRAM
I Flag signal input 0 (fixed at "L")
I Flag signal input 1 (fixed at "L")
– Ground for the internal 1Mbit SRAM
I General purpose input (fixed at "L")
– Ground for digital circuit
I General purpose input (fixed at "L")
I General purpose input (fixed at "L")
– Power supply (2.5V) for digital circuit
I General purpose input/SUBQ interface data input (fixed at "L")
I Terminal for test/SUBQ interface frame sync input (fixed at "L")
I Flag signal input 2/SUBQ interface block sync input (fixed at "L")
Description