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BD (MD) BOARD IC121 CXD2652AR
Pin No.
Pin Name
I/O
Function
1
MNT0 (FOK)
O
Focus OK signal output to the MD mechanism controller (IC316)
“H” is output when focus is on (“L”: NG)
2
MNT1 (SHCK)
O
Track jump detection signal output to the MD mechanism controller (IC316)
3
MNT2 (XBUSY)
O
Busy signal output to the MD mechanism controller (IC316)
4
MNT3 (SLOC)
O
Spindle servo lock status monitor signal output to the MD mechanism controller (IC316)
5
SWDT
I
Writing serial data signal input from the MD mechanism controller (IC316)
6
SCLK
I
Serial data transfer clock signal input from the MD mechanism controller (IC316)
7
XLAT
I
Serial data latch pulse signal input from the MD mechanism controller (IC316)
8
SRDT
O (3)
Reading serial data signal output to the MD mechanism controller (IC316)
9
SENS
O (3)
Internal status (SENSE) output to the MD mechanism controller (IC316)
10
XRST
I
Reset signal input from the MD mechanism controller (IC316) “L”: reset
11
SQSY
O
Subcode Q sync (SCOR) output to the MD mechanism controller (IC316)
“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 MD mechanism controller
(IC316) “L” is output every 13.3 msec Almost all, “H” is output
13
RECP
I
Laser power selection signal input from the MD mechanism controller (IC316)
“H”: recording mode, “L”: playback mode
14
XINT
O
Interrupt status output to the MD mechanism controller (IC316)
15
TX
I
Recording data output enable signal input from the MD mechanism controller (IC316)
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 terminal
17
OSCO
O
System clock signal (512Fs=22.5792 MHz) output terminal
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 digital in)
22
DOUT
O
Digital audio signal output terminal when playback mode (for digital 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 to the A/D, D/A converter (IC201)
28
DVDD
—
Power supply terminal (+3.3V) (digital system)
29 to 32
A03 to A00
O
Address signal output to the D-RAM (IC124)
33
A10
O
Address signal output to the external D-RAM Not used (open)
34 to 38
A04 to A08
O
Address signal output to the D-RAM (IC124)
39
A11
O
Address signal output to the external D-RAM Not used (open)
40
DVSS
—
Ground terminal (digital system)
41
XOE
O
Output enable signal output to the D-RAM (IC124) “L” active
42
XCAS
O
Column address strobe signal output to the D-RAM (IC124) “L” active
43
A09
O
Address signal output to the D-RAM (IC124)
44
XRAS
O
Row address strobe signal output to the D-RAM (IC124) “L” active
45
XWE
O
Write enable signal output to the D-RAM (IC124) “L” active
46
D1
I/O
Two-way data bus with the D-RAM (IC124)
* I (A) for analog input, O (3) for 3-state output, and O (A) for analog output in the column I/O.
(DIGITAL SIGNAL PROCESSOR, DIGITAL SERVO PROCESSOR, EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER, ATRAC ENCODER/DECODER, 2M BIT D-RAM)
Summary of Contents for HCD-MD1EX - System
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