Ic Pin Function Descriptions - Sony CDP-CX455 Service Manual

CDP-CX455

6-17. IC Pin Function Descriptions

• IC104 TC94A20F-CX4 D/A Converter, MP3 Decoder (BD Board)
Pin No. Pin Name
1 /RESET
2 MIMD
3 /MICS
4 /MILP
5 SDA
6 SCL
7 /MIACK
8 VDDT
9 SDO
10 BCKO
11 LRCKO
12 SDI0
13 BCKIA
14 LRCKIA
15 SDI1
16 BCKIB
17 LRCKIB
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 DOUT
31 to 34 PO0 to PO3
35 VDDT
36 PO4
37 PO5
38 PO6
39 MP3REQ
40 VSS
41 IRQ
42 VDDM
43 AMUTE
44 FI1
45 VSSM
46, 47 PI0, PI1
48 VSS
49, 50 PI2, PI3
51 PI4/CLCK
52 VDD
53 PI5/DATA
54 TSTIN/SFSY
55 FI2/SBSY
46
I/O
I Reset input terminal "L": reset
I Microcomputer interface mode selection input "H": I2C, "L": TSB (fixed at "H")
I Microcomputer interface chip select signal input (fixed at "L")
I Microcomputer interface latch pulse input (fixed at "L")
I/O Serial data input/output
I Serial clock input
O Microcomputer interface acknowledge signal output (open)
– 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 (LMUTE signal output)
O General purpose output (RMUTE signal output)
O General purpose output (open)
O Interrupt request signal output to the system control (IC501)
– Ground for digital circuit
I External interrupt signal input (open)
– Power supply (2.5V) for the internal 1Mbit SRAM
I Flag signal input 0 (AMUTE signal input)
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/SUBQ interface clock input or output (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