LM1253A National Semiconductor, LM1253A Datasheet - Page 30

• Manufacturer Part Number: LM1253A
• Description: Monolithic Triple 180 MHz I2C CRT Pre-amp With Integrated Analog On Screen Display (OSD) Generator
• Manufacturer: National Semiconductor

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Fonts-2 Color
Fonts-4 Color
Display Page
FRMCTRL1
FRMCTRL2
CHARFONTACC
VBLANKDUR
CHARHTCTRL
BBHLCTRLB0
BBHLCTRLB1
BBLLCTRLB0
BBLLCTRLB1
CHSDWCTRLB0
CHSDWCTRLB1
ROMSIGCTRL
ROMSIGDATAB0
ROMSIGDATAB1
HSTRT1
VSTRT1
COLWIDTH1B0
COLWIDTH1B1
COLWIDTH1B2
COLWIDTH1B3
HSTRT2
VSTRT2
W2STRTADRL
W2STRTADRH
COLWIDTH2B0
COLWIDTH2B1
COLWIDTH2B2
COLWIDTH2B3
Note: Set Reserved bits to 0.
Pre-Amp Interface Registers
Register
0000–2FFE
3000–3FFE
8000–83FF
Address
840D
841C
841D
8400
8401
8402
8403
8404
8405
8406
8407
8408
8409
840A
840E
840F
8410
8411
8414
8415
8416
8417
8418
8419
841A
841B
841E
841F
+1
+1
Default
FFh
5Bh
10h
80h
00h
10h
51h
01h
00h
00h
00h
00h
00h
00h
00h
13h
14h
00h
00h
00h
00h
56h
00h
01h
00h
00h
00h
00h
TABLE 5. OSD Interface Registers
LM1253A OSD Interface Registers
PIXELS_PER_LINE[2:0]
D7
X
X
X
X
X
X
X
X
X
X
CHAR_CODE[7:4] or reserved
B[1:0]
B[1:0]
B[1:0]
D6
X
X
X
X
X
X
X
X
X
30
D5
X
X
X
X
X
X
X
X
X
CHAR_HEIGHT[7:0]
G[2:0]
G[2:0]
G[2:0]
VBLANK_DURATION[6:0]
D4
TD
X
X
X
X
X
X
X
X
COL[23:16]
COL[31:24]
COL[23:16]
COL[31:24]
PIXEL[7:0]
PIXEL[7:0]
HPOS[7:0]
HPOS[7:0]
ADDR[7:0]
CRC[15:8]
VPOS[7:0]
VPOS[7:0]
COL[15:8]
COL[15:8]
CRC[7:0]
COL[7:0]
COL[7:0]
CDPR
D3
CHAR_CODE[3:0] or ATTR_CODE
X
X
X
X
X
X
BLINK_PERIOD[4:0]
D2E
D2
X
X
X
X
X
X
PIXEL[11:8]
PIXEL[11:8]
ATTR
R[2:0]
R[2:0]
R[2:0]
D1E
D1
X
X
X
X
X
ADDR[8]
FONT4
OSE
CRS
B[2]
B[2]
B[2]
D0