Philips ACT400 Service Manual page 11

PIN DESCRIPTION OF INTEGRATED CIRCUITS
TZA1024 – HF-PREAMPLIFIER AND LASER SUPPLY CIRCUIT
Pin Name
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1 LD
2 VCCL
3 CFIL
4 MON
5 DIN
6 GND
7 PWRON
8 CMFB
9 RFFB
10 RFEQO
11 CDRW
12 EQSEL
13 VCC2
14 RGADJ
SC111259AFTA – SERVO DRIVER & POWER MANAGEMENT IC
Pin Name
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1 SLEEP
2 WAKE
3 VR
4 ERR4
5 CF4
6 CF3
7 ERR3
8 ERR2
9 CF2
10 CF1
11 ERR1
12 OUT1A
13 PGND1
14 OUT1B
15 VIN12
16 OUT2B
17 PGND2
18 OUT2A
19 OUT3A
20 PGND2
21 OUT3B
22 VIN34
23 OUT4B
24 PGND4
25 OUT4A
26 VG
27 C2H
28 C1H
29 C1L
30 C2L
31 VIN
32 RSTB
33 CHGSW
34 RS
35 INM2
36 RF2
37 DCIN
38 VDET
39 VREF
40 DTC
41 VOUT
42 VC
43 CGND
44 RF1
45 INM1
46 CLK
47 OE
48 CHGON
Direction
HF-preamp → CD-drive
+2.6V
→ HF-preamp
CD-drive → HF-preamp
CD-drive → HF-preamp
GND
CD10 → HF-preamp
+2.6V / 2
→ HF-preamp
HF-preamp →
CD10 → HF-preamp
CD10 → HF-preamp
+2.6V
GND
Direction
µP → servo driver
µP → servo driver
+VR
CD10 → servo driver
→ servo driver
→ servo driver
CD10 → servo driver
DSP/µP → servo driver
→ servo driver
→ servo driver
CD10 → servo driver
servo driver → CD-drive
GND
servo driver → CD-drive
+A
servo driver → CD-drive
GND
servo driver → CD-drive
servo driver → CD-drive
GND
servo driver → CD-drive
+A
servo driver → CD-drive
GND
servo driver → CD-drive
servo driver →
→ servo driver
→ servo driver
→ servo driver
→ servo driver
battery → servo driver
servo driver →
servo driver → charge circuit
charge circuit → servo driver
→ servo driver
→ servo driver
+DC
servo driver →
servo driver →
→ servo driver
servo driver → DC/DC converter
→ servo driver
GND
servo driver →
→ servo driver
→ servo driver
DSP → servo driver
µP → servo driver
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