Service Manual

45
STR-K1600
Ver. 1.1
• IC Pin Descriptions
IC1501 CXD9718BQ (DSP) (DIGITAL BOARD (3/4))
Pin No. Pin Name I/O Pin Description
1 VSS — Ground
2 XRST I Reset signal input from SYSTEM CONTROL IC
3 EXTIN I Not used (Connect to ground)
4 LRCKI3 I Not used (Connect to ground)
5 VDDI I Power supply pin (+1.9 V)
6 BCKI3 I Not used (Connect to ground)
7 PLOCK O Not used (Open)
8 VSS — Ground
9 MCLK1 I Clock signal input (13.9 MHz)
10 VDDI I Power supply pin (+1.9 V)
11 VSS — Ground
12 MCLK2 O Clock signal output (13.9 MHz)
13 MS I Not used (Fixed at L)
14 SCKOUT O Internal system clock signal output for 8CH DAC IC
15 LRCKI1 I Sampling clock signal input from ADC IC
16 VDDE I Power supply pin (+3.4 V)
17 BCKI1 I Bit clock signal input from ADC IC
18 SDI1 I Audio IF data input from ADC IC
19 LRCKO O Sampling clock signal output for 8CH DAC IC
20 BCKO O Bit clock signal output for 8CH DAC IC
21 VSS — Ground
22 KFSIO I/O Audio clock signal (384fs/256fs) input/output for DIR IC
23 to 26 SDO1 to SDO4 O Digital audio serial data output for 8CH DAC IC
27 SPDIF O Not used (Open)
28 LRCKI2 I Sampling clock signal input from ADC IC
29 BCKI2 I Bit clock signal input from ADC IC
30 SDI2 I Digital audio serial data input from ADC IC
31 VSS — Ground
32 HACN O Acknowledge signal output for SYSTEM CONTROL IC
33 HDIN I Serial data input from SYSTEM CONTROL IC
34 HCLK I Clock signal input from SYSTEM CONTROL IC
35 HDOUT O Serial data output for SYSTEM CONTROL IC
36 HCS I Chip select signal input from SYSTEM CONTROL IC
37 GP12 I GP12 signal input from SYSTEM CONTROL IC
38, 39 GP13, GP14 O Not used (Open)
40 VDDI I Power supply pin (+1.9 V)
41 VSS — Ground
42 GP15 O Not used (Open)
43 OE0 O Not used (Open)
44 CS0 O External memory chip select signal output for D/A converter IC (SDRAM)
45 WE0 O SDRAM write enable signal output for D/A converter IC (SDRAM)
46 VDDE I Power supply pin (+3.4 V)
47 WMD1 I Not used (Fixed at H)
48 VSS — Ground
49 WMD0 I Not used (Fixed at H)
50 PAGE2 O Not used (Open)
51 VSS — Ground
52, 53 PAGE1, PAGE0 O Not used (Open)
54 BOOT I Not used (Connect to ground)
55 TST1 O Not used (Open)
56 BST I Boot stop signal input from SYSTEM CONTROL IC