promethean PRM-30A Service Manual page 60

IC Block Diagrams
● PW190 <Scaler, IC301>
PORTA(7:0)
PORTB(7:0)
PORTC(7:0)
PORTD(7:0)
GPIO
YPbPr
IN0RGB(2:0)
RGB1
IN0SOG0
RGB2
IN0HS1
CVBS 1
IN0VS1
CVBS 2
CVBS 3
IN0RGB(5:3)
Y/C 1
IN0SOG(2:1)
Y/C 2
IN0HS2
Y/C 3
IN0VS2
IN1CLK
IN1PEN
IN1RGB(23:0)
IN0CLK
IN0PEN
IN0VS
IN0HS
IN0SOG
IN0CST
IN0FLD
IN0CLP
IN0RGB(23:0)
(47:0)
● TPS54286 <DC-DC Converter, IC7811>
PWM(3:0) 2WIRE(2:0) IRRCVR(2:0)
EXTINT(2:0)
IR
2-Wire
PWM
Decoder
Serial
Microprocessor Bus
2D Video
Decoder
ADC
Deinterlacer
Input Port 1
Sync Decoder
Auto Image Optimizer
VBI Memory
Interface
Input Port 0
Sync Decoder
Scaler
Auto Image Optimizer
VBI Memory
Interface
Memory Controller
Internal Memory
A(23:1),D(15:0)
BHEN,RD,WR
ROMWE,
NMI CS(1:0) ROMOE
Turbo 80186
Microprocesser
with Instruction
Interrupt ROM
Cache
Controller Interface
Watchdog
& Timer
OSD
Control and Generation
Image Management
Video Enhancement
Color Space Converter
Image Blending
MCLK UCLK DCLK
Spread
Spectrum
PLL
XI XO
-60-
TMS
RXD0/1 TCK
TXD0/1 TCI
DAC(3:0)ADC(7:0) TDO
DAC ADC UART JTAG
DP
USB
DM
DHS
Display Timing DVS
DEN
Generator
DCLK
Display Port
DRGB(29:0)
Color Matrix, Gamma
CLTs, Color Space
Dual LVDS
Expander
PW190
Internal Block Diagram