Sony MDS-EX77, Руководство по обслуживанию

Страница: 55 / 73

– 60 –
Pin No. Pin Name I / O Function
1 FOK O Focus OK signal output to the system controller (IC401) “H” is output when focus is on
2 SHCK O Track jump detection signal output to the system controller (IC401)
3 XBUSY O Monitor 2 signal output to the system controller (IC401)
4 SLOC O Monitor 3 signal output to the system controller (IC401)
5 SWDT I Writing data signal input from the system controller (IC401)
6 SCLK I Serial clock signal input from the system controller (IC401)
7 XLAT I Serial latch signal input from the system controller (IC401)
8 SRDT O (3) Reading data signal output to the system controller (IC401)
9 SENS O (3) Internal status (SENSE) output to the system controller (IC401)
10 XRST I Reset signal input from the system controller (IC401) “L”: reset
11 SQSY O
Subcode Q sync (SCOR) output to the system controller (IC401)
“L” is output every 13.3 msec Almost all, “H” is output
12 DQSY O
Digital In U-bit CD format subcode Q sync (SCOR) output to the system controller (IC401)
“L” is output every 13.3 msec Almost all, “H” is output
13 RECP I
Laser power selection signal input from the system controller (IC401)
“H”: recording mode, “L”: playback mode
14 XINT O Interrupt status output to the system controller (IC401)
15 TX I
Recording data output enable signal input from the system controller (IC401)
Writing data transmission timing input (Also serves as the magnetic head on/off output)
16 OSCI I System clock signal (512Fs=22.5792 MHz) input from the A/D, D/A converter (IC201)
17 OSCO O System clock signal (512Fs=22.5792 MHz) output terminal Not used (open)
18 XTSL I
Input terminal for the system clock frequency setting
“L”: 45.1584 MHz, “H”: 22.5792 MHz (fixed at “H” in this set)
19 RVDD — Power supply terminal (+3.3V) (digital system)
20 RVSS — Ground terminal (digital system)
21 DIN I Digital audio signal input terminal when recording mode (for optical in)
22 DOUT O Digital audio signal output terminal when playback mode (for optical out) Not used
23 ADDT I Recording data input from the A/D, D/A converter (IC201)
24 DADT O Playback data output to the A/D, D/A converter (IC201)
25 LRCK O L/R sampling clock signal (44.1 kHz) output to the A/D, D/A converter (IC201)
26 XBCK O Bit clock signal (2.8224 MHz) output to the A/D, D/A converter (IC201)
27 FS256 O Clock signal (11.2896 MHz) output terminal Not used (open)
28 DVDD — Power supply terminal (+3.3V) (digital system)
29 A03 O
30 A02 O
31 A01 O
32 A00 O
33 A10 O
34 A04 O Address signal output to the external D-RAM Not used (open)
35 A05 O
36 A06 O
37 A07 O
38 A08 O
39 A11 O
BD BOARD IC121 CXD2650R
(DIGITAL SIGNAL PROCESSOR, DIGITAL SERVO PROCESSOR, EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER, ATRAC ENCODER/DECODER, 2M BIT D-RAM)