Sony CDX-C8850 Service Manual page 28

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• IC300 CXD2727Q (DIGITAL SIGNAL PROCESSOR) (MAIN BOARD)
Pin No. Pin Name
1 VSS1
2 – 15 TD0 – 13
16 – 21 TST0 – 5
22 – 24 JPE1 – 3
25 VDD1
26 AVS3
27 FL-OUT
28 AVD3
29 RL-OUT
30 AVD5
31 AVS5
32 AVD1
33 AVS1
34 LREF
35 LIN
36 AVS7
37 AVD7
38 NCO
39 AVDX
40 XTLO38
41 XTLI38
42 AVSX
43 SUB-OUT
TE
L 13942296513
44 AVD8
45 AVS8
46 RIN
47 RREF
48 AVS2
49 AVD2
50 AVS6
51 AVD6
52 RR-OUT
53 AVD4
54 FR-OUT
55 AVS4
56 VSS2
57 RST
58 BFOT
59 SCK
60 REDY
61 TRDT
62 LAT
63 RVDT
64 XS24
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65 VDD2
66 VSS3
67 – 69 SO1 – 3
.
70 SOUT
71 SI1
72, 73 SI2, 3
28
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I/O
— Digital ground
I Test pin (Normally, fixed at "L".)
I Test pin (Normally, fixed at "L".)
I External condition jump input ("H" : condition jump) (Fixed at "L" in this set.)
— Digital power supply pin (+3.3 V)
— Analog ground (for D/A converter 1)
O Analog signal output for front (L-ch) output.
— Analog power supply pin (+3.3 V) (for D/A converter 1)
O Analog signal output for rear (L-ch) output.
— Analog power supply pin (+3.3 V) (for D/A converter 1)
— Analog ground (for D/A converter 1)
— Analog power supply pin (+3.3 V) (for A/D converter L-ch)
— Analog ground (for A/D converter L-ch)
O Pass control connection pin for A/D converter. (for L-ch)
I Tuner and bus audio in signal input (for L-ch)
— Analog ground (for D/A converter 2)
— Analog power supply pin (+3.3 V) (for D/A converter 2)
— Not used. (Open)
— Analog power supply pin (+3.3 V) (for master clock)
O System clock output (16.9344 MHz)
I System clock input (16.9344 MHz)
— Analog ground (for master clock)
O Analog signal output for sub woofer output.
— Analog power supply pin (+3.3 V) (for D/A converter 2)
— Analog ground (for D/A converter 2)
I Tuner and bus audio in signal input (for R-ch)
O Pass control connection pin for A/D converter. (for R-ch)
— Analog ground (for A/D converter R-ch)
— Analog power supply pin (+3.3 V) (for A/D converter R-ch)
— Analog ground (for D/A converter 3)
— Analog power supply pin (+3.3 V) (for D/A converter 3)
O Analog signal output for rear (R-ch) output.
— Analog power supply pin (+3.3 V) (for D/A converter 3)
O Analog signal output for front (R-ch) output.
— Analog ground (for D/A converter 3)
— Digital ground
I System reset signal input from system control (IC500). ("L" : reset)
O Master clock output for CD.
I Clock signal input for serial data transfer from system control (IC500).
Micon interface transfer permission signal output to system control (IC500).
O
("L" : transfer prohibit)
O Serial data output to system control (IC500).
I Serial data latch pulse input from system control (IC500).
I Serial data input from system control (IC500).
Serial data 24/32 bit slot select signal input from system control (IC500).
I
("L" : 24 bit slot, "H" : 32 bit slot) (Valid at slave mode.)
— Digital power supply pin (+3.3 V)
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— Digital ground y
O Serial data output (Not used in this set.)
i
O Serial data output (Not used in this set.)
I Serial data input
I Serial data input (Fixed at "L" in this set.)
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2 9
8
Pin Description
Q Q
3 6 7 1 3 1 5
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.
9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9