Ic701 (Tpic2050): 9Ch Motor Drive With 3 Beam Laser Diode Driver - LG BH5140S Service Manual

2. IC701 (TPIC2050)
: 9ch motor drive with 3 beam laser diode driver
2-1. Block Diagram
XFG
XFG
SSZ
SSZ
SCLK
SCLK
SIMO
SIMO
SIOV
SOMI
SOMI
SIOV
3.3V
GPOUT
GPOUT
XRSTIN
RESETIN
CV3P3V
0.1u
SIOV
RDY
RDY
C10V
0.1u
CA5V
0.1u
VLDDIN
VLDDIN
ILDD_DVD
ILDD_CD
ILDD_BD
A9P5V
9.5V
10u
P12V
0.1u 0.1u
Charge
XSLEEP pump
SIOV
XSLEEP
SPM Logic
On chip SPM_ENA
DAC PWM
thermometer
SIOV
TEMPMON_ENA
SOMI_HIZ
SLD_ENA
Digital core
SIOV
SLD_ENA
GPOUT_ENA
A5V
TLT_ENA
int 3.3V
Regulator
power
monitor
P12V
P5V
TRK_ENA
LOAD_ENA
P12V
int 10V
Regulator
P5V
Analog
5V
STP_ENA
DAC
LDD_AMODE
V/I
V/I
LD
select
ENDDET_ENA
V/I
LDD_MSEL
ENDDET_SEL[1:0]
AGND/DGND
P5V
19V
pre-
driver
DAC
pre-
PWM
driver
F/B F/B
ENDDET
DAC
pre-
PWM
driver
F/B
DAC
pre-
PWM
driver
F/B
DIFF_TLT
DAC
pre-
PWM
driver
F/B
pre-
driver
F/B
DAC
PWM
pre-
driver
F/B
ENDDET
DAC
pre-
PWM
driver
DAC
pre-
PWM
driver
STEP END
detection
ENDDET
ENDDET
TPIC2050
PGND_1-2 AGND
4-8
P12V
ICOM1
ICOM2
0.1 .
SPM
Current limit
ISENSE
MCOM
BEMF
detector
U 1k
power V
FET
W
SLED1+
power
FET
SLED1-
SLED END
detection
SLED2+
power
FET
SLED2-
TLT+
power
FET
TLT-
FCS+
power
FCS-
FET
TRK+
power
FET TRK-
P5V12L
P12V
P5V
LOAD+
power
FET
LOAD-
TRAY Lock
detection
STP1+
power
FET
STP1-
STP2+
power
FET
STP2-