![](http://datasheet.mmic.net.cn/40000/LM1253AAE-NA_datasheet_1645330/LM1253AAE-NA_31.png)
Pre-Amp Interface Registers (Continued)
TABLE 6. Pre-Amp Interface Registers
LM1253A Pre-Amp Interface Registers
Register
Address
Default
D7
D6
D5
D4
D3
D2
D1
D0
BGAINCTRL
8430
60h
X
BGAIN[6:0]
GGAINCTRL
8431
60h
X
GGAIN[6:0]
RGAINCTRL
8432
60h
X
RGAIN[6:0]
CONTRCTRL
8433
60h
X
CONTRAST[6:0]
BBIASCTRL
8434
80h
BBIAS[7:0]
GBIASCTRL
8435
80h
GBIAS[7:0]
RBIASCTRL
8436
80h
RBIAS[7:0]
BRIGHTCTRL
8437
80h
BRIGHTNESS[7:0]
DCOFFSET
8438
94h
PEDESTAL[2:0]
OSD CONT[1:0]
DC OFFSET[2:0]
GLOBALCTRL
8439
00h
XXXXXX
PS
BV
PLLFREQRNG
843E
16h
XXXX
IVISTAT[1:0]
PFR[1:0]
SRTSTCTRL
843F
00h
X
AID
XXXXX
SRST
Note: Set Reserved bits to 0.
Two-Color Attribute Table
TABLE 7. Two-Color Attribute Registers
LM1253A Two-Color Attribute Registers
Register
Address
D7
D6
D5
D4
D3
D2
D1
D0
ATT2C0n
8440 +
(n*4)
C1B[1:0]
C1G[2:0]
C1R[2:0]
ATT2C1n
+1
C2B[0]
C2G[2:0]
C2R[2:0]
C1B[2]
ATT2C2n
+2
X
EF[3:0]
C2B[2:1]
ATT2C3n
+3
XXXXXXXX
Note: Set Reserved bits to 0.
Two-color display character Attribute Table. The attributes for two-color display characters may be written or read via the following
address format:
A15–A6: Always 1000_0100_01b.
A5–A2: Attribute code (0h-Fh are valid values), n
A1–A0: Determines which of the 3 bytes is to be accessed.
NOTE: In the table, n indicates the attribute number 0<=n< =15
NOTE: When writing, bytes 0 through 2 must be written, in that order. Bytes 0 through 2 will take effect after byte 2 is written.
Since byte 3 contains all reserved bits, this byte may be written, but no effect will result.
When reading, it is OK to read only one, two, or all three bytes.
If writing more than one 2-color attributes using the auto increment feature, all four bytes must be written.
Four-Color Attribute Table
TABLE 8. Four-Color Attribute Registers
LM1253A Four-Color Attribute Registers
Register
Address
D7
D6
D5
D4
D3
D2
D1
D0
ATT4C0n
8500 +
(n*8)
C1B[1:0]
C1G[2:0]
C1R[2:0]
ATT4C1n
+1
C2B[0]
C2G[2:0]
C2R[2:0]
C1B[2]
ATT4C2n
+2
X
EF[3:0]
C2B[2:1]
LM1253A
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