Mitsubishi Electric XD8100U Service Manual page 118

MAIN UCOM PCB-MAIN (2/9)
IC440 PW388B-30L
PORTA(7:0)
PORTB(7:0)
PORTC(7:0)
PORTD(7:0)
GPIO PWM
IN1LK
IN1PEN
IN1VS
Input Port 1
IN1HS
IN1SOG
IN1VBI Sync Decoder
Auto Image Optimizer
IN1CST
IN1FLD
IN1CLP
VBI
IN1RGB(23:0)
Memory
Interface
IN0LK
IN0PEN
Input Port 0
IN0VS
IN0HS
Sync Decoder
IN0SOG
Auto Image Optimizer
IN0VBI
IN0CST
VBI
IN0FLD
Memory
IN0CLP
Interface
IN0RGB(47:0)
MCKFBK,MCKFBKN,MCK,MCKN,MCKE,
MDM,MRAS,MCAS,MWE
IC441, IC442 MP2367DNE-LF-Z
+
–
1.0V
+
FB 5
110KHz/340KHz
0.3V –
–
+
SS 8
ERROR
0.795V
+
AMPLIFIER
COMP 6
–
EN 7
EN OK
LOCKOUT
2.5V +
COMPARATOR
+
– SHUTDOWN
1.3V
COMPARATOR
IC475 MC74VHC4052DTR2G
12
X0
14
X1
X SWITCH
15
X2
11
X3
ANALOG
INPUTS/OUTPUTS
1
Y0
5
Y1
Y SWITCH
2
Y2
4
Y3
10
A
CHANNEL-SELECT
9
INPUTS
B
6
ENABLE
IRRCVR(1:0) NMI CS(1:0)
EXTINT(1:0)
2-Wire IR Interrupt
Serial Decoders Controller
Microprocessor Bus
Video
Enhancement
Video
Enhancement
Scaler
Scaler
Deinterlacer
Frame Buffer Memory
Controller DDR SDRAM
MA(12:0),MD(31:0),
MDQS(3:0)
External DDR
KCK,KCKN,KCKE,KDM,
SDRAM
OVP
RAMP
∑
OSCILLATOR
CLK
–
CURRENT
+
COMPARATOR
6A
1.2V
13
X
COMMON
OUTPUTS/INPUTS
3
Y
PIN 16 = V
CC
PIN 7 = V
EE
PIN 8 = GND
A(23:1),D(15:0)
BHEN,RD,WR
ROMWE,
ROMOE
ROM 16-bit Turbo Watchdog
Interface Microprocessor & Timer
OSD
Control and Generation
Image Management
Color Space Converter Gamma CLTs,Color
Image Bfending Space Expander
Keystone
Engine
MCLK UCLK
Spread Frame Buffer
Spectrum Memory Controller
PLL DDR SDRAM
XI XO
KCKFBK,KCKFBKN,
External DDR
SDRAM
KRAS,KCAS,KWE
CURRENT
2
SENSE
AMPLIFIER
+
5V
–
1
M1
0.13Ω
S Q
3
R Q
M2
1.2Ω
4
OVP
IN < 4.05V
IN
INTERNAL
REGULATORS
FUNCTION TABLE
Control Inputs
Select
Enable B A ON Channels
L L L Y0
L L H Y1
L H L Y2
L H H Y3
H X X
X = Don't Care
- B4 -
TMS
RxD/ TCK
TxD TDO TCI
UART JTAG
DHS
Display Timing
DVS
Generator DEN
DCLK
Display Port
DRGBE(35:0)
DRGBO(35:0)
PORTE(7:0)
GPIO PORTF(7:0)
PORTG(7:0)
KA(12:0),
KD(31:0),
KDQS(3:0)
IC451, IC452
NC7SB3157P6X(PBF)
IN
1
B1
2
GND
3
B0
BS
Function Table
SW
Input (S)
L B0 Connected to A
H B1 Connected to A
H: HIGH Logic Level
L:LOW Logic Level
GND
X0
X1
X2
X3
NONE
6
S
5
Vcc
4
A
Function