Sony HCD-MD5 - IC Pin Function Descriptions

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1 VC O Middle point voltage (+2.5V) generation
2AI
3BI
4CI
5DI
Signal input from the optical block detector.
6EI
7FI
8 FI I F operation amplifier input
9 FO O F operation amplifier output
10 PD I Front monitor. Connected to the photo diode.
11 APCREF I Input for laser power setting
12 TEMPI I Connected to the temperature sensor.
13 GND — Ground
14 AAPC O APC LD amplifier output
15 DAPC O Not used (Open).
16 TEMPR O Output for a temperature sensor reference voltage
17 XRST I Reset signal input from the MD system control (IC201). When reset:“L”.
18 SWDT I Writing data signal input from the MD system control (IC201).
19 SCLK I Clock signal input from the MD system control (IC201).
20 XLAT I Latch signal input from the MD system control (IC201).
21 VREF O Reference voltage output. Not used (Open).
22 TENV O Not used (Open).
23 THLD I Not used (Connected to VC).
24 VCC — Power supply (+5V)
25 TFIL I Not used (Connected to VC).
26 TE O Tracking error signal output to the CXD2535BR (IC121).
27 TLB I Add signal input to tracking error.
28 CSLED I Sled error LPF
29 SE O Sled error signal output to the CXD2535BR (IC121).
30 ADFM O ADIP FM signal output
31 ADIN I Receives a ADIP FM signal in AC coupling.
32 ADAGC I Connected to the external capacitor for ADIP AGC.
33 ADFG O ADIP duplex FM signal output to the CXD2535BR (IC121). (22.05 kHz ±1 kHz)
34 AUX O Auxiliary signal output to the CXD2535BR (IC121).
35 FE O Focus error signal output to the CXD2535BR (IC121).
36 FLB I Not used (Open).
37 ABCD O Light amount signal output to the CXD2535BR (IC121).
38 BOTM O Bottom hold signal of light amount signal output to the CXD2535BR (IC121).
39 PEAK O Peak hold signal of light amount signal output to the CXD2535BR (IC121).
40 RFAGC I Connected to the external capacitor for RF AGC circuit.
41 RF O Playback EFM RF signal output to the CXD2535BR (IC121).
42 ISET I Sets the internal circuit constant. 22 kHz: BPF center frequency.
43 AGCI I Receives a RF signal in AC coupling.
44 RFO O RF signal output
45 MORFI I Receives a MO RF signal in AC coupling.
46 MORFO O MO RF signal output
47 I I
48 J I
Signal input from the optical block dictator.
6-22. IC PIN FUNCTION DESCRIPTION
Pin No. Pin Name I/O Function
BD (MD) Board IC101 CXA1981AR (RF Amplifier)