Philips AZ7261 Service Manual page 16

PINNING OF INTEGRATED CIRCUITS
SAA7372 – DECODER AND DIGITAL SERVO IC CD7
Pin Name Direction
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
1 VSSA1 GND
2 VDDA1 +3.5
CD-drive → CD7
3 D1
CD-drive → CD7
4 D2
CD-drive → CD7
5 D3
6 VRL GND
CD-drive → CD7
7 D4
CD-drive → CD7
8 R1
CD-drive → CD7
9 R2
→ CD7
10 IREFT
11 VRH
12 VSSA2 GND
13 SELPLL +3.5
CD7 →
14 ISLICE
→ CD7
15 HFIN
16 VSSA3 GND
→ CD7
17 HFREF
→ CD7
18 IREF
19 VDDA2 +3.5
20 TEST1 GND
X-Tal → CD7
21 CRIN
X-Tal → CD7
22 CDOUT
23 TEST2 GND
CD7 →
24 CL16
CD7 →
25 CL11
CD7 → servo driver
26 RA
CD7 → servo driver
27 FO
CD7 → servo driver
28 SL
29 TEST3 GND
30 VDD1P +3.5
CD7 →
31 DOBM
32 VSS1 GND
CD7 → servo driver
33 MOTO1
CD7 →
34 MOTO2
CD7 →
35 SBSY
CD7 →
36 SFSY
→ CD7
37 RCK
CD7 →
38 SUB
39 VSS2 GND
CD7 →
40 V5
CD7 →
41 V4
CD7 →
42 V3
CD7 →
43 KILL
CD7 →
44 MISC
CD7 → DAC
45 DATA
CD7 → DAC
46 WCLK
47 VDD2P +3.5
CD7 → DAC
48 SCLK
49 VSS3 GND
CD7 →
50 CL4
µP → CD7
51 SDA
µP → CD7
52 SCL
µP → CD7
53 RAB
µP → CD7
54 SILD
55 NC
56 VSS4 GND
µP → CD7
57 RESET
CD7 → µP
58 STATUS
59 VDD3C +3.5
CD7 →
60 C2FAIL
CD7 →
61 CFLG
→ CD7
62 V1
→ CD7
63 V2
CD7 → Laser supply
64 LDON
CS 46 173
3-2
Description
supply (analog) of CD7
supply (analog) of CD7
unipolar current input (central diode signal input)
unipolar current input (central diode signal input)
unipolar current input (central diode signal input)
reference input for ADC
unipolar current input (central diode signal input)
unipolar current input (satellite diode signal input)
unipolar current input (satellite diode signal input)
current reference for calibration ADC
reference output from ADC
supply (analog) of CD7
selects whether internal clock multiplier PLL is used
current feedback from data slicer
comparator signal input
supply (analog) of CD7
comparator common mode input
reference current pin (nom. VDD/2)
supply (analog) of CD7
test control input
crystal/resonator input
crystal/resonator output
test control input
16.9344MHz system clock output
11.2896MHz or 5.6448MHz clock output (3-state)
radial actuator output
focus actuator output
slide actuator output
test control input
supply (digital) of CD7
bi-phase mark output (3-state)
supply (digital) of CD7
motor output1 of CD7; versatile (3-state)
motor output2 of CD7; versatile (3-state)
subcode block sync (3-state)
subcode frame sync (3-state)
subcode clock input
P to W subcode bits (3-state)
supply (digital) of CD7
versatile output pin of CD7
versatile output pin of CD7
versatile output pin of CD7 (open drain)
kill output; programmable (open drain)
C2 error flag; output only defined in CD-ROM modes (3-state)
serial data output (3-state)
word clock output (3-state)
supply (digital) of CD7
serial bit clock output (3-state)
supply (digital) of CD7
4.2336MHz µP clock output
µP interface data I/O line (open drain output)
µP interface clock line
µP interface R/W and load control line
µP interface R/W and load control line
no connection
supply (digital) of CD7
power-on reset input (active low)
servo interrupt request line/CD7 status register output (open drain)
supply core (digital)
indication of correction failure (open drain)
correction flag output (open drain)
versatile input pin
versatile input pin
laser drive on output (open drain)
MPC1718 – 4-STAGE PWM SERVODRIVER
Pin Name Direction
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
→ servo driver
1 Hin2
servo driver → disc motor
2 Hout2A
DC/DC converter 2 → LC-filter
3 DCout2
4 Vin +A
DC/DC converter 1 → LC-filter
5 DCout1
6 Gnd1,2 GND
servo driver → focus servo
7 Hout1A
→ servo driver
8 Hin1
servo driver → focus servo
9 Hout1B
servo driver →
10 Vout
→ servo driver
11 DTC
servo driver →
12 FBout
→ servo driver
13 INM
→ servo driver
14 INP
servo driver →
15 VBias
servo driver → +S
16 Vd
17 S.Gnd GND
servo driver → +1.2
18 Vref
+VG → servo driver
19 VG
servo driver →
20 Cg
servo driver → +1.8
21 Vreg
servo driver →
22 Cosc
→ servo driver
23 Sync
µP → servo driver
24 Power
servo driver → track servo
25 Hout3B
→ servo driver
26 Hin3
servo driver → track servo
27 Hout3A
28 Gnd3,4 GND
DC/DC converter 3 → LC-filter
29 DCout3
30 Vin +A
DC/DC converter 4 → LC-filter
31 DCout4
servo driver → slide servo
32 Hout4A
→ servo driver
33 Hin4
servo driver → slide servo
34 Hout4B
35 Lim2,4 +LF
CD7 → servo driver
36 Vinp3
CD7 → servo driver
37 Vinp4
38 VLG +3.5
39 S.Gnd GND
40 Vc DR_REF
CD7 → servo driver
41 Vinp2
CD7 → servo driver
42 Vinp1
+LF → servo driver
43 Lim1,3
servo driver → disc motor
44 Hout2B
TDA1545A – CONTINUOUS CALIBRATION DAC
Pin Name Direction
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
CD7 → DAC
1 BCK
CD7 → DAC
2 WS
CD7 → DAC
3 DATA
4 GND GND
5 VDD +LFD
DAC →
6 IOL
DAC →
7 IREF
DAC →
8 IOR
3-2
Description
power supply for H-bridge output section 2
H-bridge PWM output 2A
connects H-bridge DC/DC converter 2 to LC-filter
power supply for servo driver
connects H-bridge DC/DC converter 1 to LC-filter
ground for H-bridge section 1 and 2
H-bridge PWM output 1A
power supply for H-bridge output section 1
H-bridge PWM output 1B
PWM output of DC/DC converter of VLG power supply
dead time control pin (used to set duty value of Vout output)
feedback for DC/DC converter of VLG power supply
inverting input for DC/DC converter of VLG power supply
non-inverting input for DC/DC converter of VLG power supply
bias stabilizing capacitor connection pin for DC/DC converter
power switch output pin of servo driver
ground for internal logic of servo driver
band-gap reference voltage output of servo driver
gate drive power supply for output transistor,
power is supplied by using the Cg pin to form a charge pump.
charge pump step-up capacitor connection
regulator output pin
sawtooth waveform output, synchronized to the clock
external clock input for separate excitation
power control pin (low-active)
H-bridge PWM output 3B
power supply for H-bridge output section 3
H-bridge PWM output 3A
ground for H-bridge section 3 and 4
connects H-bridge DC/DC converter 3 to LC-filter
power supply for servo driver
connects H-bridge DC/DC converter 4 to LC-filter
H-bridge PWM output 4A
power supply for H-bridge output section 4
H-bridge PWM output 4B
input pin, limits LC-filter output voltages of sections 2 and 4
control input pin, receives track servo signals from CD7
H-bridge output is controlled by voltage between this pin and Vc
control input pin, receives slide servo signals from CD7
H-bridge output is controlled by voltage between this pin and Vc
power supply for motor control circuit
ground for internal logic of servo driver
reference voltage for motor control circuit
control input pin, receives disc motor control signals from CD7
H-bridge output is controlled by voltage between this pin and Vc
control input pin, receives focus servo signals from CD7
H-bridge output is controlled by voltage between this pin and Vc
input pin, limits LC-filter output voltages of sections 1 and 3
H-bridge PWM output 2B
Description
bit clock input of DAC
word select input of DAC
data input of DAC
ground
supply voltage
left channel output
reference voltage output
right channel output