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LG CRD-8483B Service Manual page 19

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• IC501 MT1198CE
Pin Description
Pin No.
Symbol
Data PLL Interface
1
VBDPLL
2
PLLVSS
3
LPIO
4
LPIN
5
LPFO
LPFN
6
IREF
7
8
PDO
9
PLLVDD
Turbo 8032 Interface
10
UP3_5/UT1
UP3_4/UT0
11
12
DGND
13
UP3_2/
UINT0
14
UP3_1/
UTXD
UP3_0/
15
URXD
16
DVDD
24
UP1_0/
UA16
25, 27, 28, 29,
UP2_[7:0]/
UA[15:8]
30, 31, 33, 35
UP3_6/
26
UWR_
32
UPSEN_/
09
DGND
34
UALE/
36
IO10
UP0_[7:0]/
38-45
UAD[7:0]
UA[7:0]/
46-53
0[18:11]
Type
Description
Anallog Output
Reference voltage
Ground
Ground pin for data PLL and related analog circuitry.
Analog Output
The output of VCO integrator.
Analog Input
The negative input terminal of VCO integrator.
Analog Output
The output of loop filter amplifier.
Analog Input
The negative input terminal of loop filter amplifier.
Analog Input
Current reference input. It generate reference current for data PLL.
Connect an external 15K resistor to this pin and PLLVSS.
Analog output
Phase comparator output. Output the phase difference of EFM and Pck.
Sink or (source) a constant current to loop filter over this pin when phase
difference occurs. Otherwise, this pin is high impedance.
Analog Power(5V)
Power for data PLL and related analog circuitry.
TTL I/O, Slew rate
Programmable bi-direction I/O.
50K pull_up
Alternate function : T1.Timer 1 input.
TTL I/O, Slew rate
Programmable bi-direction I/O.
50K pull_up
Alternate function : T0. Timer 0 input.
Ground
Ground pin for internal digital circuitry.
TTL I/O, Slew rate
Programmable bi-directional I/O.
50K pull_up
Alternate function : INT0_. External interrupt 0.
TTL I/O, Slew rate
Programmable bi-directional I/O.
50K pull_up
Alternate function : TXD. Serial transmit data.
TTL I/O, Slew rate
Programmable bi-directional I/O.
50K pull_up
Alternate function : RXD. Serial receive data.
Power(5V)
Power pin for internal digital circuitry.
TTL I/O, Slew rate
Programmable bi-directional I/O.
50K pull_up
Alternate function : A16. Address bit 16 output.
TTL I/O, Slew rate
Programmable bi-directional I/O.
50K pull_up
Alternate function : A[15:8]. Upper address bus input/output.
TTL I/O, Slew rate
WR_. Data write signal. The pin is dedicated for WR_ function, and the
SMT, 50K pull_up
programmable I/O function is removed.
TTL I/O
Programmable store enable output, active low. PSEN_ enables the
50K pull_up
external ROM output port.
Alternate function : Programmable output.
Ground
Ground pin for internal digital circuitry.
TTL I/O
Address latch enable output, active high.
50K pull_up
Alternate functiion : Programmable GPIO.
TTL I/O, Slew rate
Programmable bi-directional I/O.
Alternate function : AD[7.0]. Lower adress/data bus output for external
device.
TTL I/O, Slew rate
Lower address bus output for external device.
Alternate function : Pfogrammable output.
17

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