44
STR-DB870/DB1070
• DIGITAL BOARD IC1408 LC89056W-E (DIGITAL AUDIO INTERFACE RECEIVER)
Pin No. Pin Name I/O Description
1
DISEL I
Input data select terminal (fixed at “L”)
2 DOUT O
EIAJ data and parity output terminal Not used (open)
3 DIN0 I
Amp integrate data input from the select switch (IC1406)
4 DIN1 O
Amp integrate data input terminal Not used (fixed at “L”)
5 DIN2 I
Amp integrate data input terminal Not used (fixed at “L”)
6 DGND —
Ground terminal (for digital)
7 DVDD —
Power supply terminal (+5V) (for digital)
8RI
Input terminal for VCO generator band adjustment
9 VIN I
Input terminal for VCO self running frequency set
10 LPF O
External LPF for PLL is connected to this terminal
11 AVDD —
Power supply terminal (+5V) (for analog)
12 AGND —
Ground terminal (for analog)
13 CKOUT O
Clock signal output to the audio DSP1, 2 (IC1501, 1601)
14 BCK O
Bit clock signal output to the A/D converter (IC1101) and audio DSP1 (IC1501)
15
LRCK O
L/R sampling clock signal output to the A/D converter (IC1101) and audio DSP1, 2
(IC1501, 1601)
16
DATAO O
Audio data output to the system controller (IC1703) and audio DSP1 (IC1501)
17
XSTATE O
Clock status flag output to the system controller (IC1703)
18
DGND —
Ground terminal (for digital)
19
DVDD —
Power supply terminal (+5V) (for digital)
20
XMCK O
Clock signal outout to the A/D converetr (IC1101) (24.576MHz)
21
XOUT O
Clock output terminal Not used (open)
22
XIN I
Clock input from the clock oscillator (IC1410) (24.576MHz)
23
EMPHA O
Emphasis monitor output terminal “H”: on Not used (open)
24
AUDIO O
Audio transfer signal output to the audio DSP1 (IC1501)
25 CSFLAG O
Not used (open)
26 to 29
F0/P0/C0 to F3/P3/C3
O
Terminal for check Not used (open)
30
DVDD —
Power supply terminal (+5V) (for digital)
31
DGND —
Ground terminal (for digital)
32
AUTO O
Not used (open)
33
BPSYNC O
Not used (open)
34 ERROR O
Error mute output to the system controller (IC1703) and audio DSP1 (IC1501)
35
DO O
Data output to the system controller (IC1703)
36
DI I
Data input from the system controller (IC1703)
37
CE I
Chip enable signal input from the system controller (IC1703)
38
CLK I
Clock signal input from the system controller (IC1703)
39
XSEL I
Clock select terminal (fixed at “H”)
40, 41
MODE0, MODE1 I
Mode setting input terminal (fixed at “L”)
42
DGND —
Ground terminal (for digital)
43
DVDD —
Power supply terminal (+5V) (for digital)
44, 45
DOSEL0, DOSEL1 I
Data format select signal input terminal (fixed at “L”)
46
CKSEL0 I
System clock select signal input terminal (fixed at “L”)
47
CKSEL1 I
System clock select signal input from the system controller (IC1703)
48
XMODE I
Reset signal input from the system controller (IC1703)
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