Sony XR-C7500R, Service Manual

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34
7-16. IC PIN FUNCTION DESCRIPTION
•
MAIN BOARD IC100 CXD2726Q-4 (DIGITAL SIGNAL PROCESSOR, DIGITAL FILTER, D/A CONVERTER)
Pin No. Pin Name I/O Description
1 VSS1 — Ground terminal (digital system)
2 to 15 T.P
I Input terminal for the test (fixed at “L”)
16 to 21 TST0 to TST5 I
Input terminal for the test (fixed at “L”)
22 to 24 JPE1 to JPE3 I External condition jump terminal “H”: condition jump (fixed at “L”)
25 VDD1 —
Power supply terminal (+3.3V) (digital system)
26 AVS3 —
Ground terminal (for D/A converter 1) (analog system)
27 AOUTL1 O
D/A converter 1 (L-ch side) output terminal
Analog signal output for front side (L-ch side) output in this set
28 AVD3 —
Power supply terminal (+3.3V) (for D/A converter 1) (analog system)
29 AOUTR1 O
D/A converter 1 (R-ch side) output terminal
Analog signal output for rear side (L-ch side) output in this set
30 AVD5 — Power supply terminal (+3.3V) (for D/A converter 1) (analog system)
31 AVS5 —
Ground terminal (for D/A converter 1) (analog system)
32 AVD1 —
Power supply terminal (+3.3V) (for L-ch side A/D converter) (analog system)
33 AVS1 — Ground terminal (for L-ch side A/D converter) (analog system)
34 LREF O
Connected to the bus control for A/D converter (for L-ch side)
35 LIN I
A/D converter (L-ch side) analog input terminal
Tuner and bus audio input signal (L-ch side) in this set
36 AVS7 — Ground terminal (for D/A converter 2) (analog system)
37
AVD7
—
Power supply terminal (+3.3V) (for D/A converter 2) (analog system)
38 AOUTL2 O
D/A converter 2 (L-ch side) output terminal Not used (open)
39 AVDX — Power supply terminal (+3.3V) (for master clock) (analog system)
40 XTLO38 O
System clock output terminal (16.9344 MHz)
41 XTLI38 I
System clock input terminal (16.9344 MHz)
42 AVSX — Ground terminal (for master clock) (analog system)
43 AOUTR2
O D/A converter 2 (R-ch side) output terminal Not used (open)
44 AVD8
— Power supply terminal (+3.3V) (for D/A converter 2) (analog system)
45 AVS8 — Ground terminal (for D/A converter 2) (analog system)
46 RIN
I
A/D converter (R-ch side) analog input terminal
Tuner and bus audio input signal (R-ch side) in this set
47 RREF
O Connected to the bus control for A/D converter (for R-ch side)
48 AVS2 — Ground terminal (for R-ch side A/D converter) (analog system)
49 AVD2
— Power supply terminal (+3.3V) (for R-ch side A/D converter) (analog system)
50 AVS6
— Ground terminal (for D/A converter 3) (analog system)
51 AVD6 — Power supply terminal (+3.3V) (for D/A converter 3) (analog system)
52 AOUTL3
O
D/A converter 3 (L-ch side) output terminal
Analog signal output for rear side (R-ch side) output in this set
53 AVD4
— Power supply terminal (+3.3V) (for D/A converter 3) (analog system)
54 AOUTR3
O
D/A converter 3 (R-ch side) output terminal
Analog signal output for front side (R-ch side) output in this set
55 AVS4 —
Ground terminal (for D/A converter 3) (analog system)
56 VSS2 —
Ground terminal (digital system)
57 XRST I System reset signal input from the system controller (IC600) “L”: reset
58 BFOT O
Master clock signal output terminal Not used (open)
59 SCK I
Serial data transfer clock signal input from the system controller (IC600) and liquid crystal
display drive controller (IC800)
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