Sony CDP-M400CS - Page 47

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CDP-M400CS
• IC Pin Function Description
BD BOARD IC104 TC94A20F-CX4 (D/A CONVERTER, MP3 DECODER)
Pin No. Pin Name I/O Description
1 /RESET I Reset input terminal “L”: reset
2 MIMD I Microcomputer interface mode selection input “H”: I2C, “L”: TSB (fixed at “H”)
3 /MICS I Microcomputer interface chip select signal input (fixed at “L”)
4 /MILP I Microcomputer interface latch pulse input (fixed at “L”)
5SDA I/O Serial data input/output
6 SCL I Serial clock input
7 /MIACK O Microcomputer interface acknowledge signal output (open)
8 VDDT — Power supply (3.3V) for digital circuit
9 SDO O Data output (open)
10 BCKO O Bit output (open)
11 LRCKO O LR clock output (open)
12 SDI0 I Data input 0
13 BCKIA I Bit clock input A
14 LRCKIA I LR clock input A
15 SDI1 I Data input 1 (fixed at “L”)
16 BCKIB I Bit clock input B (fixed at “L”)
17 LRCKIB I LR clock input B (fixed at “L”)
18 VDD — Power supply (2.5V) for digital circuit
19 STANDBY I Standby mode control signal input “H”: STB, “L”: normal (fixed at “L”)
20 VSS — Ground for digital circuit
21 VSSL — Ground for DAC Lch
22 VRAL — Reference voltage terminal for DAC Lch
23 LO O DAC Lch signal output
24 VDAL — Power supply (2.5V) for DAC Lch
25 VDAR — Power supply (2.5V) for DAC Rch
26 RO O DAC Rch signal output
27 VRAR — Reference voltage terminal for DAC Rch
28 VSSR — Ground for DAC Rch
29 TESTP I Terminal for test “H”: test mode, “L”: normal (fixed at “L”)
30 DOUT O SPDIF signal output (open)
31 to 34 PO0 to PO3 O General purpose output (open)
35 VDDT — Power supply (3.3V) for digital circuit
36 PO4 O General purpose output (LMUTE signal output)
37 PO5 O General purpose output (RMUTE signal output)
38 PO6 O General purpose output (open)
39 MP3REQ O Interrupt request signal output to the system control (IC501)
40 VSS — Ground for digital circuit
41 IRQ I External interrupt signal input (open)
42 VDDM — Power supply (2.5V) for the internal 1Mbit SRAM
43 AMUTE I Flag signal input 0 (AMUTE signal input)
44 FI1 I Flag signal input 1 (fixed at “L”)
45 VSSM — Ground for the internal 1Mbit SRAM
46, 47 PI0, PI1 I General purpose input (fixed at “L”)
48 VSS — Ground for digital circuit
49, 50 PI2, PI3 I General purpose input (fixed at “L”)
51 PI4/CLCK I General purpose input/SUBQ interface clock input or output (fixed at “L”)
52 VDD — Power supply (2.5V) for digital circuit