Sharp XL-40H Service Manual page 48

XL-40H/50H
IC802 VHiTC9462F/-1: Servo/Signal Control (TC9462F) (3/3)
Port Name
Pin No.
83 DVDD
84 DVR
85 LO
86 DVSL
87* TEST1
88* TEST2
89* TEST3
90-93 BUS0-BUS3
94 VDD
95 VSS
96 BUCK
97 /CCE
98* TEST4
99* /TSMOD
100 /RST
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
IC802 VHiTC9462F/-1: Servo/Signal Control (TC9462F)
LPFN
LPFO
PVREF
VCOREF
VCOF
AVSS
SLCO
Data
slicer
RFI
AVDD
RFCT
RFZI
RFRP
FEI
SBAD
TSIN
TEI
TEZI
FOO
D/A
TRO
VREF
Input/Output
— D/A converting section power terminal.
— Reference voltage terminal.
Output L channel data forward rotation output terminal.
— L channel D/A converting section power terminal.
Input Test mode terminal. To be opened usually.
Input Test mode terminal. To be opened usually.
Input Test mode terminal. To be opened usually.
Input/Output Microcomputer interface data input/output terminal.
— Digital + power terminal.
— Digital ground terminal.
Input Microcomputer interface clock input terminal.
Input Microcomputer interface chip enable signal input terminal. "L": BUS0 to 3 is active.
Input Test mode termina. To be opened usually.
Input Local test mode selection terminal.
Input Reset signal input terminal. "L": Reset.
PLL
TMAX
Status
VCO
CLV
servo
Digital equalizer
adjustment circuit
Servo control
PWM
Figure 48 BLOCK DIAGRAM OF IC
Function
Sub-code
Digital
demodulation
out
circuit
16KRAM
Address
circuit
– 48 –
Audio output
circuit
Correction
circuit
Clock
generator
1Bit
DAC
/RST
/TSMOD
TEST4
/CCE
BUCK
VSS
VDD
BUS3
BUS2
BUS1
BUS0
TEST3
TEST2
TEST1
DVSL
LO
DVR
DVDD
RO
DVSR