Sony HCD-V707, Руководство по обслуживанию

Страница: 30 / 81

– 30 –
Pin No. Pin Name I/O Function
47 STBY I Hardware standby signal input terminal (fixed at “H”)
48 RESET I Reset signal input from the IIC interface controller (IC901) “L”: reset
49 NMI I
Non-maskable interrupt input terminal (fixed at “H”)
50 VSS —
Ground terminal
51 EXTAL O
System clock output terminal (10 MHz)
52 XTAL I
System clock input terminal (10 MHz)
53 VCC —
Power supply terminal (+5V)
54
AS
O
Address strobe signal output to the MPEG audio/video decoder (IC201)
Used for chip select signal output to the MPEG audio/video decoder (IC201)
55 RD O
Data reading strobe signal output to the S-RAM (IC751)
56 WR O
Data writing strobe signal output to the MPEG audio/video decoder (IC201) and S-RAM
(IC751)
57 RESO O Reset signal output terminal Not used (open)
58 AVSS — Ground terminal (for A/D conversion)
59 TEST0 I Setting terminal for the test (color bar mode) Normally: “H”
60 TEST1 I Setting terminal for the test (E-F balance mode) Normally: “H”
61 TE I Setting terminal for the test (E-F balance mode) Normally: “H”
62 SENS I
Internal status (SENSE) signal input from the CXD2545Q (IC101)
63 DAC-SEL I
Setting terminal of the D/A converter (fixed at “H”)
64 NPIN I
Video system selection input from the system select switch (S9001)
“L”: PAL, “H”: NTSC, Middle: AUTO
65 VSS —
Ground terminal
66 VREQ I
Request signal input terminal Not used (fixed at “H”)
67 VREF I
Reference voltage (+5V) input terminal
68 AVCC —
Power supply terminal (for A/D conversion)
69 CHECK-LED O
LED drive signal output for the self diagnosis indicator
Normally: LED on (“H” output), Error: LED blinking
70 XHIRQ I
Interruption request signal input from the MPEG audio/video decoder (IC201)
71 SCOR I Sub-code sync (S0+S1) detection signal input from the CXD2545Q (IC101)
72 MREQ I Communication request signal input from the IIC interface controller (IC901)
73 DATA O
Serial data output to the CXD2545Q (IC101), D/A converter/digital filter (IC101), and video
D/A converter (IC401)
74 AMUTE O
Mute control signal output to the CXD2545Q (IC101) and D/A converter/digital filter (IC101)
75 LDON O
Laser on/off selection signal output to the CXA1821M (IC103) “H”: laser on
76 XLT O
Serial data latch pulse output to the CXD2545Q (IC101)
77 SCLK O
Serial data transfer clock signal output to the CXD2545Q (IC101)
78 CLK O
Serial data transfer clock signal output to the CXD2545Q (IC101), D/A converter/digital filter
(IC101), and video D/A converter (IC401)
79 NR-SEL I
Setting terminal of the video noise reduction (fixed at “H”)
80 — —
Not used (open)
www. xiaoyu163. com
QQ 376315150
9 9
2
8 9
4 2
9 8
TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com