AMD Geode LX 800@0.9W - Manual (Page 346)

346 AMD Geode™ LX Processors Data Book
Display Controller Register Descriptions 33234H
6.6.11.4 DC VBI Odd Line Enable (DC_VBI_LN_ODD)
Settings written to this register do not take effect until the start of the following frame or interlaced field.
6.6.11.5 DC VBI Even Line Enable (DC_VBI_LN_EVEN)
Settings written to this register do not take effect until the start of the following frame or interlaced field.
DC Memory Offset 0ACh
Type
R/W
Reset Value xxxxxxxxh
DC_VBI_LN_ODD Register Map
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LN_OFFSET_ODD LN_EN_ODD RSVD
DC_VBI_LN_ODD Bit Descriptions
Bit Name Description
31:25 LN_OFFSET_
ODD Odd Line Offset. Specifies the offset (in lines) of the start of VBI data from the initial
edge of VSYNC. This field is not used if interlacing is disabled. This field must be set to a
value of 126 or less.
24:2 LN_EN_ODD Odd Line Enable. Each of the bits in this field corresponds to a line (24-2) of VBI data.
Setting a bit in this field to 1 enables the corresponding line of VBI data in the odd field.
This field is not used if interlacing is disabled.
1:0 RSVD Reserved. Set to 0.
DC Memory Offset 0B0h
Type
R/W
Reset Value xxxxxxxxh
DC_VBI_LN_EVEN Register Map
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LN_OFFSET_EVEN LN_EN_EVEN RSVD
DC_VBI_LN_EVEN Bit Descriptions
Bit Name Description
31:25 LN_OFFSET_
EVEN Even Line Offset. Specifies the offset (in lines) of the start of VBI data from the initial
edge of VSYNC. This field is used for all frames if interlacing is disabled. This field must
be set to a value of 126 or less.
24:2 LN_EN_EVEN Even Line Enable. Each of the bits in this field corresponds to a line (24-2) of VBI data.
Setting a bit in this field to 1 enables the corresponding line of VBI data in the even field.
This field is used for all frames if interlacing is disabled.
1:0 RSVD Reserved. Set to 0.