Sharp XL-UR27H (serv.man2) Service Manual ▷ View online
XL-UR27H
8 – 1
CHAPTER 8. OTHER
[1] Function Table Of IC
IC2 VHILA6261//-1: Focus/Tracking/Spin/Sled Driver (LA6261)
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
* Set power system GND to the minimum potential together with SGND.
* Short-circuit three pins of power system SVSS and PVCC1 externally before use.
Pin No.
Terminal Name
Function
1
FO+
BTL Output pin (+) for focus coil.
2
FO-
BTL Output pin (-) for focus coil.
3
SP+
BTL Output pin (+) for spin motor.
4
SP-
BTL Output pin (-) for spin motor.
5
SL-
BTL Output pin (+) for slide motor.
6
SL+
BTL Output pin (-) for slide motor.
7
PGND1
Power GND for channels 1,2,3 and 4 (BTL).
8
REGIN
Regulator pin (External PNP base).
9
PVCC1
Power for channels 1,2,3 and 4 (BTL). (SVCC short-crircuited)
10
REGOUT
Regulator pin (External PNP collector).
11
VIN1
Input pin for channel 1
12*
VIN1G
Input pin for channel 1 (for gain control)
13
VIN2
Input pin for channel 2
14*
VIN2G
Input pin for channel 2 (for gain control)
15
VIN3
Input pin for channel 3
16*
VIN3G
Input pin for channel 3 (for gain control)
17
VIN4
Input pin for channel 4
18*
VIN4G
Input pin for channel 4 (for gain control)
19
FWD5
CH5 Output change pin (FWD). Logic input for bridge.
20
REV5
CH5 Output change pin (REV). Logic input for bridge.
21
VCONT5
Input pin for CH5 output voltage control.
22
FWD6
CH6 Output change pin (FWD). Logic input for bridge.
23
REV6
CH6 Output change pin (REV). Logic input for bridge.
24
VCONT6
Input pin for CH5 output voltage control.
25
VREFIN
Reference voltage input pin.
26
SGND
Signal system GND.
27
SVCC
Signal system power (PVCC1 short - circuited).
28
PVCC2
Power for channel 5 and 6 (H bridge).
29
MUTE
Input pin for BTL mute.
30
PGND2
Power GND for channels 5 and 6 (H bridge).
31
TR+
H bridge Output pin (+) for tray motor.
32
TR-
H bridge Output pin (-) for tray motor.
33
CAM+
H bridge Output pin (+) for cam motor.
34
CAM-
H bridge Output pin (-) for cam motor.
35
TR+
BTL Output pin (+) for tracking coil.
36
TR-
BTL Output pin (-) for tracking coil.
XL-UR27H
8 – 2
IC2 VHILA6261//-1: Focus/Tracking/Spin/Sled Driver (LA6261)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
11k
22k
1k
1k
1k
1k
11k
11k
11k
22k
22k
22k
-
+
-
+
Pre
Dr
iv
e
Pre
Dr
iv
e
+
-
+
-
+
-
Refcronce
voltage
DUFFER AMP
For 1/2 VCC
DUFFER AMP
For VREF
TSD
Bandgad
BTL
Mode
select
Mode
select
CH4
CH5
CH6
CH3
CH2
CH1
VOLTAGE
CONTROL AMP
Figure 8-1 BLOCK DIAGRAM OF IC
XL-UR27H
8 – 3
IC1 VHITC94A70FG5: CD MP3 DECODER (1/4)
Pin Description
Pin Description
Figure 8-2 BLOCK DIAGRAM OF IC
XL-UR27H
8 – 4
IC1 VHITC94A70FG5: CD MP3 DECODER (2/4)
Pin Description
Pin Description
Pin
No.
No.
Symbol
Input / Output
Description
Default
Remarks
1
AVSS3
-
Grounding pin for 3.3V CD analog circuits.
-
2
RFZi
Input 3AI/F
Input pin for RF ripple zero-cross signal.
Input
Connect to RFRP 0.033uF
3
RFRP
Output 3AI/F
RF ripple signal output pin.
Output
Monitor pin for the signal.
4
SBAD/RFDC
Output 3AI/F
Sub beam addition signal or RFDC (Hologram PUH
RF peak detection signal) signal output pin.
RF peak detection signal) signal output pin.
Output
5
FEi
Output 3AI/F
Focus error signal input pin.
Output
6
TEi
Output 3AI/F
Tracking error signal input pin.
Output
7
TEZi
Input 3AI/F
Tracking error signal zero-cross input pin.
Input
Connect to TEL by 0.033uF
8
AVDD3
-
Power supply pin for 3.3 V CD analog circuits.
-
9
Foo
Output 3AI/F
Focus servo equalizer output pin.
Output
Built-in series resister 3.3k
Ω
10
TRo
Output 3AI/F
Tracking servo equalizer output pin.
Output
11
VREF
-
Reference voltage pin for analog circuits (1.65V).
-
Connect to VRO and PVREF.
Connect 0.1uF
Connect 0.1uF
12
FMo
Output 3AI/F
Feed servo equalizer output pin.
Output
Built-in series resister 3.3k
Ω
3-state output (AVDD3,
AVSS3, VREF)
AVSS3, VREF)
13
DMo
Output 3AI/F
Disc servo equalizer output pin.
Output
14
VSSP3
-
Grounding pin for 3.3V DSP VCO circuits.
-
15
VCOi
Output
PD output for VCO (control voltage input for VCO).
Output
Three-state output
16
VDDP3
-
Power supply pin for 3.3V DSP VCO circuit.
-
17
VDD1
-
Power supply pin for 1.5V digital VCO circuit.
-
18
VSS
-
Grounding pin for 1.5V digital circuits.
-
19
FGiN
Input 3I/F
FG signal input pin for CAV.CLV:L:, CAV FG input.
Input
Analog Input
20
ioO(/Hso)
Input / Output
3I/F
Gerenal input /output ports-0 (CD)
(Playback speed mode flag output Pin.)
(Playback speed mode flag output Pin.)
Input
Schmitt input COMOS PORT
21
io1
Input / Output
3I/F
Grounding pin for 1.5V digital circuits.
Input
Schmitt input COMOS PORT
22
VVSS3
-
Grounding pin for 3.3V digital system circuits oscillator
circuit.
circuit.
-
23
VXSS3
Input 3AI/F
Input pin for syetem clock oscillator circuit (External
Rfb=1M
Rfb=1M
Ω).
Input
X’tal
24
Xo
Output 3AI/F
Output pin for system clock oscillator circuit.
Output
X’tal
25
XVDD3
-
Power supply pin for 3.3 v sy stearm clock oscillator
circuit.
circuit.
-
26
DVSS3
-
Grounding pin for 3.3V digital circuits.
-
27
Ro
Output 3AI/F
R channel audio output pin of Audio DAC.
Output
No capacitor required to DVR
pin when built-in audio DAC is
not in use, however , connect
3.3V to DVDD3 and GND to
DVSS3.
pin when built-in audio DAC is
not in use, however , connect
3.3V to DVDD3 and GND to
DVSS3.
28
DVDD3
-
Power supply pin for 3.3V Audio DAC circuit.
-
29
DVR
-
Reference voltage pin for Audio DAC.
-
30
Lo
Output 3AI/F
L channel audio output pin of Audio DAC.
Output
31
DVSS3
-
Grounding pin for 3.3V Audio DAC circuit.
-
32
VDDT3
-
Power supply pin for 3.3 V digital I/O circuit.
-
For CD and DSP I/O
33
VSS
-
Grounding pin for 3.3V digital circuit.
-
-
34
VDD1
-
Power supply pin for 1.5V digital circuit.
-
-
35
VDDM1
-
Power supply pin for 1.5V 1Mbit SRAM.
-
-
36
SRAMSTB
Input 3I/F
1Mbit SRAM stand-by pin.
Input
Schmitt input
37
/RST
Input 3I/F
Reset signal input pin.
Input
Schmitt input
38
BUS0
Input / Output
3I/F
Data input/output pin -0 for microcontroller interface.
Input
Schmitt input CMOS PORT
39
BUS1
Input / Output
3I/F
Data input/output pin -1 for microcontroller interface.
Input
Schmitt input CMOS PORT
40
BUS2(So)
Input / Output
3I/F
Data input/output pin -2 for microcontroller interface
(Serial output).
(Serial output).
Input
Schmitt input CMOS PORT
41
BUS3(Si)
Input / Output
3I/F
Data input/output pin -3 for microcontroller interface
(Serial output).
(Serial output).
Input
Schmitt input CMOS PORT
42
BUCK(CLK)
Input 3I/F
Clock input pin for the microcontroller interface.
(Clock input for Serial communication interface)
(Clock input for Serial communication interface)
Input
Schmitt input
43
/CCE
Input 3I/F
Chip enable signal input pin for microcontroller
interface.
interface.
Input
Schmitt input
44
TEST
Input 3I/F
Setting pin for LSI test mode.
(Connect to GND in normal operation)
(Connect to GND in normal operation)
Input
Schmitt input
45
IRQ
Input 3I/F
DSP interruption pin (Pull down by 100k
Ω when not in
use).
Input
Schmitt input
46
AoUT3(Po4)
Output 3I/F
Audio data output pin -3 (DSP general output port -4).
Output
CMOS PORT
47
AoUT2(Po5)
Output 3I/F
Audio data output pin -2 (DSP general output port -5).
Output
CMOS PORT
48
Pio0
Input / Output
3I/F
DSP general input/output port -0.
Input
Schmitt input CMOS PORT
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