參數(shù)資料
型號(hào)： HD64646
廠商： Hitachi,Ltd.
英文描述： LCTC (LCD Timing Controller)
中文描述： LCTC（LCD定時(shí)控制器）
文件頁(yè)數(shù)： 17/50頁(yè)
文件大小： 156K
代理商： HD64646
HD64645/64646
17
Table 6
Internal Register Comparison between LCTC and CRTC
Reg. No.
LCTC HD64645/HD64646
Comparison
CRTC HD6845
AR
Address register
Equivalent to CRTC
Address register
R0
Horizontal total characters
Horizontal total characters
R1
Horizontal displayed characters
Horizontal displayed
characters
R2
—
Particular to CRTC;
unnecessary for LCTC
Horizontal sync position
R3
Sync width
R4
Vertical total characters
R5
Vertical total adjust
R6
Vertical displayed characters
R7
Vertical sync position
R8
Interface and skew
R9
Maximum raster address
Equivalent to CRTC
Maximum raster address
R10
Cursor start raster
Cursor start raster
R11
Cursor end raster
Cursor end raster
R12
Start address (H)
Start address (H)
R13
Start address (L)
Start address (L)
R14
Cursor address (H)
Cursor (H)
R15
Cursor address (L)
Cursor (L)
R16
Particular to CRTC;
unnecessary for LCTC
Light pen (H)
R17
Light pen (L)
R18
Horizontal virtual screen width
Additional registers
for LCTC
R19
Multiplexing duty ratio (H)
R20
Multiplexing duty ratio (L)
R21
Display start raster
R22
Mode register
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