參數(shù)資料
型號: TP6508
英文描述: Pushbutton Switch; Actuator Diameter:0.078"; Circuitry:6PDT; Switch Operation:6 Changeover Push-Push; Contact Current Max:100mA; Leaded Process Compatible:Yes; Mounting Type:PCB; Switch Function:6PDT
中文描述: 顯卡
文件頁數(shù): 69/134頁
文件大?。?/td> 600K
代理商: TP6508
P.66
Bit 4-7
Reserved .
Extended Indexed Register CREG 28 : TV Leading Half Horizontal Retrace Start Reg-
ister
This is a read/write register.
Port address is Hex 3D5.
Default value after hardware reset is Hex 00.
D0-3 TV leading half horizontal retrace start bit 0 to 3
D4-7 Reserved
Bit 0-3
By TV display, it was designed to base on the interlace scan technique, TP6508 need two retrace
signal(like VGA retrace signal) on even field and odd field. TV composite sync. signal waveform in-
clude two equalizing pulse interval, front and back the vertical sync. interval, those have three pulse
individually. We need to define the intervals position in the TV composite sync. waveform. So we can
use these bits to program the front equalizing pulse(front of horizontal sync. pulse interval ) start
position. on even field and make it be able using in TV display mode.
Reserved .
Bit 4-7
Extended Indexed Register CREG 29 : TV Half Horizontal Retrace End for Equaliz-
ing Pulse Register
This is a read/write register.
Port address is Hex 3D5.
Default value after hardware reset is Hex 00.
D0-3 TV leading half horizontal retrace end bit 0 to 3
D4-7 Reserved
Bit 0-3
These bits is used to program the back equalizing pulse(back of horizontal sync. pulse
interval ) start position. on odd field and make it be able using in TV display mode.
Reserved .
Bit 4-7
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