Philips AX7201, Руководство по обслуживанию, Страница: 8 / 24

PIN DESCRIPTION OF INTEGRATED CIRCUITS
AN8399SA – HF-PREAMPLIFIER
Pin Name Direction Description
1 PD
→
HF-preamp input for LD output monitoring PD signals
2 LD
→
HF-preamp external TR drive pin for driving LD
3 VCC +HF power supply
4 RFN
→
HF-preamp RF addition amp inverting input
5 RFOUT HF-preamp
→
RF addition amp output
6 RFIN
→
HF-preamp AGC amp input
7 LDRCTL
→
HF-preamp LD reference voltage control pin
8 CAGC
→
HF-preamp AGC loop filter connection pin
9 ARF HF-preamp
→
RF after AGC output
10 CEA
→
HF-preamp capacitor for 3T-ENV detection filter connection pin
11 3TOUT HF-preamp
→
3T-ENV detection output
12 CBDO
→
HF-preamp capacitor for low-speed dark level BDO detection connection pin
13 BDO HF-preamp
→
BDO detection output
14 COFTR
→
HF-preamp capacitor for low-speed off-track detection connection pin
15 OFTR HF-preamp
→
off-track detection output
16 NRFDET HF-preamp
→
RF signal amplitude detection information output
17 GND GND ground pin
18 SLPSW
→
HF-preamp sleep mode control pin
19 VREF VREF reference voltage output (VCC / 2)
20 TEN
→
HF-preamp TE amp inverting input
21 TEOUT HF-preamp
→
track error output
22 FEN
→
HF-preamp FE amp inverting input
23 FEOUT HF-preamp
→
focus error output
24 GCTL
→
HF-preamp gain & APC control pin
25 FBAL
→
HF-preamp pin to input signal for controlling focus balance adjustment
26 TBAL
→
HF-preamp pin to input signal for controlling tracking balance adjustment
27 E
→
HF-preamp satellite diode signal input
28 F
→
HF-preamp satellite diode signal input
29 D
→
HF-preamp central diode signal input
30 B
→
HF-preamp central diode signal input
31 C
→
HF-preamp central diode signal input
32 A
→
HF-preamp central diode signal input
SM8613AV – LASER DIODE DRIVER
Pin Name Direction Description
1 LDISET
→
laser diode driver LD drive maximum current setting resistor connection
2 NC1 – no connection
3 MUTE
→
laser diode driver intermittent drive stop signal
4 PCK
→
laser diode driver intermittent control reference pulse input
5 DUTYADJ
→
laser diode driver intermittent duty ratio adjust resistor connection
6 FLOCK
→
laser diode driver intermittent drive control signal
7 NC2 – no connection
8 GND GND ground
9 PDVIN
→
laser diode driver laser luminosity monitor voltage input
10 NC3 – no connection
11 LDOFF
→
laser diode driver LD drive current control signal
12 LDIOUT laser diode driver
→
LD drive current output
13 VCC +2.6V supply voltage
14 RG2 laser diode driver
→
APC frequency response control capacitor connection
15 NC4 – no connection
16 RG1
→
laser diode driver APC loop gain control resistor connection
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