1
6
(5). Processing of photograph
PW1306 is an optimized graph processing IC used for plane displayer (monitor).
1.U12 74LVC541A is an 8-digit buffer. Its input and output have 3 state functions. When OE1 and
OE2 are both low electric level, Ii and Oi are in on state. Otherwise Qi is three states. Controlled by
RD,CSO signal of PW1306, PW1306 reads the information about the push key and decodes the key
according to the state of D0 \ D7.
2.PW1306 provides three terminals for data of 24 bits,of which one is specialized for input (VG
port) of Video/graphics data, one is specialized for the display of output port (terminal D), another
one is a terminal (DG port) for the data of definable double direction display output/graphics input.
DG port is defined as input mode, which can be independently considered as a VG port or can be
formed, together with the original VG terminal, into an input port for 48 bit 2 picture element/every
clock. Once DG port is defined as output mode, it can be formed, together with D terminal, into a
displayer of 48 bit for double point (double click) screen.
· PW1306 with built in OSD function,in support of transparent and semi-transparent OSD,and with
phased-in and phased-out function.
·PW1306 includes an 80X86 CPU,16 bit micro processor, with interruption port, universal I/O ports,
VART port, IR decoder, PWM output port and timer and a memory port applicable for various
PROM,ROM,FLASH,RAM.
Signal flow direction of PW1306:
1. LG screen(single point screen)display of data output
· DRE[7:0],DGE[7:0],DBE[7:0]
· DCLK ,DEN,DHS, DVS
2.PW1306 FLASH interface
·A(19:1) to the address bus of flash.
·D(15:0) to the data bus of flash.
·ROMWEN write in enable of Flash.
· ROMOEN
output enable of Flash.
3. other signals
·Reset signal from small CPU.
·RD,CSO,I/O extension control.
·TXD,RXD universal asynchronous sending and receiving.
· SDA,SCL
I2C bus
· IR: infrared signal input from remote controlled receiving board.
· P15V330A P15V330B controls the 5 way 1/2 switch of BA7657F.
· NMI non-screened interruption.(for access to programs)
· RAIN GAIN BAIN R,G,B three base color input
·HSYNC VSYNC input
·PWM OUT: output of modulated pulse width for the control of the brightness of display screen ·
LVDSON:to control the POWER DOWN of the sender of LVDS
·BKLON:control signal for back lights
·LCDON :control signal for the power supply of PANEL ·SDA1,SCL1,ACK,REQ to X603 and the
to analog plate for communication with the analog plate.
·Flash ID: for normal operation when in low electric level and for flash write software when in high
electric level.
