DAEWOO ELECTRONICS DSL-19M1WCD Service Manual page 31

2. LM1117
(See Page 22)
3. MT1389HD
Abbr. :
SR : Slew Rate
PU : Pull Up
PD : Pull Down
SMT : Schmitt Trigger
2MA~16MA : Output buffer driving strength.
Pin Main
231 RFGND18
232 RFVDD18
252 OSP
253 OSN
254 RFGC
255 IREF
256 AVDD3
1 AGND
2 DVDA
3 DVDB
4 DVDC
5 DVDD
6 DVDRFIP
7 DVDRFIN
8 MA
9 MB
10 MC
11 MD
12 SA
13 SB
14 SC
15 SD
16 CDFON
17 CDFOP
18 TNI
19 TPI
Pin Main
20 MDI1
21 MDI2
22 LDO2
23 LDO1
Alt. Type
RF Interface ( 26 )
Ground
Power
Analog output
Analog output
Analog output
Analog Input
Power
Ground
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
ALPC ( 4 )
Alt. Type
Analog Input
Analog Input
Analog Output
Analog Output
30
Description
Analog ground
Analog power 1.8V
RF Offset cancellation capacitor connecting
RF Offset cancellation capacitor connecting
RF AGC loop capacitor connecting for DVD-ROM
Current reference input. It generates reference current for
RF path. Connect an external 15K resistor to this pin and
AVSS.
Analog power 3.3V
Analog ground
AC coupled input path A
AC coupled input path B
AC coupled input path C
AC coupled input path D
AC coupled DVD RF signal input RFIP
AC coupled DVD RF signal input RFIN
DC coupled main-beam RF signal input A
DC coupled main-beam RF signal input B
DC coupled main-beam RF signal input C
DC coupled main-beam RF signal input D
DC coupled sub-beam RF signal input A
DC coupled sub-beam RF signal input B
DC coupled sub-beam RF signal input C
DC coupled sub-beam RF signal input D
CD focusing error negative input
CD focusing error positive input
3 beam satellite PD signal negative input
3 beam satellite PD signal positive input
Description
Laser power monitor input
Laser power monitor input
Laser driver output
Laser driver output