Philips EXP212 Service Manual page 8

PIN DESCRIPTION OF INTEGRATED CIRCUITS
TZA1024 – HF-PREAMPLIFIER AND LASER SUPPLY CIRCUIT
Pin Name Direction
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HF-preamp → CD-drive
1 LD
2 VCCL +2.6V
→ HF-preamp
3 CFIL
CD-drive → HF-preamp
4 MON
CD-drive → HF-preamp
5 DIN
6 GND GND
CD10 → HF-preamp
7 PWRON
8 CMFB +2.6V / 2
→ HF-preamp
9 RFFB
HF-preamp →
10 RFEQO
CD10 → HF-preamp
11 CDRW
CD10 → HF-preamp
12 EQSEL
13 VCC2 +2.6V
14 RGADJ GND
SC111259FTA – SERVO DRIVER & POWER MANAGEMENT IC
Pin Name Direction
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
µP → servo driver
1 SLEEP
µP → servo driver
2 WAKW
3 VR +VR
CD10 → servo driver
4 ERR4
→ servo driver
5 CF4
→ servo driver
6 CF3
CD10 → servo driver
7 ERR3
CD10/µP → servo driver
8 ERR2
→ servo driver
9 CF2
→ servo driver
10 CF1
CD10 → servo driver
11 ERR1
servo driver → CD-drive
12 OUT1A
13 PGND1 GND
servo driver → CD-drive
14 OUT1B
15 VIN12 +A
servo driver → CD-drive
16 OUT2B
17 PGND2 GND
servo driver → CD-drive
18 OUT2A
servo driver → CD-drive
19 OUT3A
20 PGND2 GND
servo driver → CD-drive
21 OUT3B
22 VIN34 +A
servo driver → CD-drive
23 OUT4B
24 PGND4 GND
servo driver → CD-drive
25 OUT4A
26 VG +VG
→ servo driver
27 C2H
→ servo driver
28 C1H
→ servo driver
29 C1L
→ servo driver
30 C2L
battery → servo driver
31 VIN
servo driver →
32 RSTB
servo driver → charge circuit
33 CHGSW
charge circuit → servo driver
34 RS
→ servo driver
35 INM2
→ servo driver
36 RF2
37 DCIN +DC
servo driver →
38 VDET
servo driver →
39 VREF
→ servo driver
40 DTC
servo driver → DC/DC converter
41 VOUT
→ servo driver
42 VC
43 CGND GND
servo driver →
44 RF1
→ servo driver
45 INM1
→ servo driver
46 CLK
µP → servo driver
47 OE
µP → servo driver
48 CHGON
3-1
Description
current output to laser diode
laser supply voltage
external filter capacitor
laser monitor diode input
central diode input
ground
power-on select input
common mode feedback voltage input
external RF feedback resistor
RF amplifier output
gain select input for CDDA/CDRW
equalizer/speed select input
supply voltage
external laser supply gain adjust resistor
Description
sleep input
wake input
reference voltage input (motor driver)
control signal input (slide error signal)
phase correction capacitor connect (CH4)
phase correction capacitor connect (CH3)
control signal input (radial error signal)
control signal input (disc speed error signal)
phase correction capacitor connect (CH2)
phase correction capacitor connect (CH1)
control signal input (focus error signal)
positive drive output (CH1)
H-bridge driver ground
negative drive output (CH1)
CH1 and CH2 H-bridge driver supply voltage
negative drive output (CH2)
H-bridge driver ground
positive drive output (CH2)
positive drive output (CH3)
H-bridge driver ground
negative drive output (CH3)
CH3 and CH4 H-bridge driver supply voltage
negative drive output (CH4)
H-bridge driver ground
positive drive output (CH4)
charge pump output
charge pump capacitor connect
charge pump capacitor connect
charge pump capacitor connect
charge pump capacitor connect
battery supply voltage
reset block output
transistor drive output for battery charger
OpAmp non-inverting input for battery charger
error amplifier inverting input
error amplifier output
DC power supply from AC/DC adaptor
DCIN over voltage and VIN low voltage detect output
Voltage reference circuit output
max. duty control voltage input for power management
PWM output for power management
power management power supply
internal ground
OpAmp output for power management
OpAmp inverting input for power management
clock input
output enable for motor drivers
charge enable for battery charger