LM1238AAD/NA National Semiconductor, LM1238AAD/NA Datasheet - Page 21
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LM1238AAD/NA
Manufacturer Part Number
LM1238AAD/NA
Description
Manufacturer
National Semiconductor
Datasheet
1.LM1238AADNA.pdf
(24 pages)
Specifications of LM1238AAD/NA
Operating Temperature (min)
0C
Operating Temperature (max)
70C
Operating Temperature Classification
Commercial
Mounting
Through Hole
Package Type
MDIP
Lead Free Status / RoHS Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM1238AAD/NA
Manufacturer:
NS/国半
Quantity:
20 000
Control Register Definitions
Icon Alternate Period Control Register (I
Register Name (address): ALT (0x0804h)
Bits 3–0 Icon Alternate Period. These four bits set the period at which the icon will switch between images, in increments of eight
Bits 5–4 Alternate Sequence Override. These two bits enable the automatic alternating sequence of icons, or allow the icon to
Bits 7–6 Reserved.
Vertical Blank Duration Control Register (I
Register Name (address): VERTBLNK (0x0805h)
Bits 6–0 Vertical Blank Duration. These seven bits set the duration of the VBLANK signal in numbers of horizontal scans.
Bit 7
PRE-AMPLIFIER INTERFACE REGISTERS
Blue Channel Gain Control Register (I
Register Name (address): BGAINCTRL (0x0810h)
Bits 6–0 Blue Channel Gain Control. These seven bits determine the gain for the Blue Channel.
Bit 7
Green Channel Gain Control Register (I
Register Name (address): GGAINCTRL1 (0x0811h)
Bits 6–0 Green Channel Gain Control. These seven bits determine the gain for the Green Channel.
Bit 7
Red Channel Gain Control Register (I
Register Name (address): RGAINCTRL1 (0x0812h)
Bits 6–0 Red Channel Gain Control. These seven bits determine the gain for the Red Channel.
Bit 7
vertical fields.
be set to one of the three alternative screens.
Reserved.
Reserved.
Reserved.
Reserved.
RSV
RSV
RSV
RSV
RSV
7
7
7
7
7
Sequence Override
Register Value
RSV
VB6
GG
BG
RG
6
6
6
6
6
00
01
10
11
TABLE 8. Alternating Icon Sequence Override
2
2
C address 0x0812h)
C address 0x0810h)
2
2
ASO1
C address 0x0811h)
VB5
C address 0x0804h)
BG
GG
RG
2
5
5
5
5
5
C address 0x0805h)
(Continued)
ASO0
VB4
GG
RG
BG
4
4
4
4
4
Automatic Alternating Sequence
21
ALT3
Set for Icon Screen 0
Set for Icon Screen 1
Set for Icon Screen 2
VB3
GG
BG
RG
3
3
3
3
3
Effect
ALT2
VB2
BG
GG
RG
2
2
2
2
2
ALT1
VB1
GG
RG
BG
1
1
1
1
1
ALT0
VB0
GG
RG
BG
0
0
0
0
0
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