Sony DSJ301 - S2 Sports CD Walkman, Service Manual

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D-SJ301
Pin No. Pin name I/O Description
SECTION 5
DIAGRAMS
5-1. EXPLANATION OF IC TERMINALS
IC601 CXD3029R (SYSTEM CONTROL)
1 XRAM O DRAM low address strobe signal outut.
2 XWE O DRAM data input enable signal output.
3 to 6 D0 to 3 I/O DRAM data bus 0-3.
7 DCLK O Not used (OPEN).
8 DCKE O Not used (OPEN).
9 XCAS O DRAM column address storobe signal output.
10 WFCK O Not used (OPEN).
11 to 13 A7 to 9 O DRAM address 7 – 9.
14 DVss – Ground terminal for DRAM interface.
15 to 17 A4 to 6 O DRAM addres 4 – 6.
18 XRDE I/O Not used (OPEN).
19 V
DD
0 – Power supply for digital.
20 CLOCK I Serial data transfer clock input.
21 SDTO I Serial data input.
22 SENS O SENS output.
23 XLAT I Latch input.
24 XSOE I CPU serial data output enable signal input.
25 SYSM I Mute input. “H” : MUTE
26 WDCK O Word clock output.
27 SCOR O SCOR output.
28 XRST I Reset terminal.
29 PWMI I Spindle moter external control input.
30 XQOK I/O Not used (OPEN).
31 XWRE I/O Not used (Fixed at “L”).
32 R4M O System clock output.
33 Vss0 – Digital ground terminal.
34 SQCK I Not used (Fixed at “H”).
35 SCLK I Not used (Fixed at “H”).
36 SQSO O Not used (OPEN).
37 XEMP O Not used (OPEN).
38 XWIH O Not used (OPEN).
39 SBSO O Not used (OPEN).
40 EXCK I Not used (Fixed at “L”).
41 XTSL I Not used (Fixed at “L”).
42 HVss – Ground terminal for headphones.
43 HPL O Not used (OPEN).
44 HPR O Not used (OPEN).
45 HV
DD
– Power supply terminal for headphones.
46 XV
DD
– Power supply terminal for master clock.
47 XTAI I Master clock input (16.9MHz).
48 XTAO O Master clock output (16.9MHz).
49 XVss – Ground terminal for master clock.
50 AV
DD
1 – Power supply terminal for DAC block.
51 AOUT1 O Audio out (L-CH).
52 VREFL O VREF terminal (L-CH).
53 AVss1 – Ground terminal DAC block.
54 AVss2 – Ground terminal DAC block.