Diagrams; Ic Pin Descriptions - Sony MZ-R55 Service Manual

6-1. IC PIN DESCRIPTIONS

• IC503 CXD2652AR (DIGITAL SERVO, ATRAC)
Pin No. Pin name
1 MNT 0
2 MNT 1
3 MNT 2
4 MNT 3
5 SWDT
6 SCLK
7 XLAT
8 SRDT
9 SENS
10 XRST
11 SQSY
12 DQSY
13 WRPWR
14 NC
15 TX
16 OSC1
17 OSC0
18 XTSL
19 NC
20 RVSS
21 DIN
22 NC
23 ADDT
24 DATA
25 ALRCK
26 ABCK
27 FS256
28 DV
DD
29 – 39 A00 – A08, A10, A11
40 DVSS
41 XOE
42 XCAS
43 A09
44 XRAS
45 XWE
46 – 49 D0 – D3
50 MVCI
51 ASYO
52 ASYI
53 AVDD
54 BIAS
55 RFI
SECTION 6

DIAGRAMS

I/O
O Traverse count signal output.
O Track jump detect output.
— Not used (Open).
— Focus OK signal output.
I Inputs write data signal from system controller (IC802).
I Inputs serial clock signal from system controller (IC802).
I Inputs serial latch signal from system controller (IC802).
O Outputs write data signal to system controller (IC802).
O Outputs internal status (SENS) to system controller (IC802).
I Inputs reset signal from system controller (IC802). L : Reset
Output subcode Q sync (SCOR) to system controller (IC802).
O
Outputs "L" every 13.3 msec. Outputs "H" at all most mostly.
Outputs digital-in U-bit CD format subcode Q sync (SCOR) to system controller (IC802).
O
Outputs "L" every 13.3 msec. Outputs "H" at all most mostly.
I Inputs laser power switching signal from system controller (IC801).
— Not used (Open).
Input of write data taransmission timing from system controller (IC801).
I
Also used as magnetic field head ON/OFF output.
O Clock output (22.5 MHz).
I Clock input (22.5 MHz).
— Not used (Fixed at "L")
— Not used (Connect to ground).
— Connect to ground.
I Digital audio signal input pin (For optical input).
— Not used (Open).
I Audio data input from A/D converter (IC301).
O Monitor/decode audio data output to A/D converter (IC301).
O L/R clock output to D/A converter (IC301).
O Bit clock signal output to A/D, D/A converter (IC301).
O 11.2896 MHz clock output (MCLK).
— Power supply (+2.8 V) for digital.
O Address signal output to DRAM (IC509).
— Ground terminal.
O Output enable contol signal output to DRAM (IC509).
O Column address strobe singal output to DRAM (IC509).
O Address signal output to DRAM (IC509).
O Row address strobe signal output to DRAM (IC509).
O Read/write control signal output to DRAM (IC509).
I Data signal input from DRAM (IC509).
— Not used (Connect to ground).
O Playback EFM full-swing output (L : VSS, H : VDD).
I Playback EFM asymmetry comparate voltage input.
— Power supply (+2.8 V) for analog.
I Playback EFM asymmetry circuit constant current input.
I Inputs playback EFM RF signal from RF amplifier (IC501).
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Pin Description