cx25840 Conexant Systems, Inc., cx25840 Datasheet - Page 210

• Manufacturer Part Number: cx25840
• Description: Video Decoder And Broadcast Audio
• Manufacturer: Conexant Systems, Inc.

Register Map
5.6.2
5-68
VBI Line Control 1
[7:0]
Bits
RW
Type
0x00
VBI Slicer Configuration
Default
The following registers are used for configuring the VBI format slicing and output.
This includes the ability to configure three custom VBI formats through the
VBI_CUSTx_CFG registers. The default configuration for VBI_CUST1_CFG is
Closed Caption 525, VBI_CUST2_CFG is WSS625, and VBI_CUST3_CFG is
WST525, System C.
VBI_MD_LINE1
Name
Conexant
1
First VBI line as defined by VOFFSET.
The mode consists of 4 bits as listed below. The most significant
nibble is used for the odd field and the least significant nibble is
used for the even field.
525 line modes:
0000 = No VBI data slicing
0001 = WST525-B
0010 = WST525-C (NABTS)
0011 = WST525-D (Moji)
0100 = WSS525
0101 = VITC525
0110 = CC525
0111 = Gemstar 1x
1000 = Gemstar 2x
1001 = Custom VBI1
1010 = Custom VBI2
1011 = Custom VBI3
625 line modes:
0000 = No VBI data slicing
0001 = WST625-B
0010 = WST625-A
0011 = RESERVED
0100 = WSS625
0101 = VITC625
0110 = CC625
0111 = VPS
1000 = RESERVED
1001 = Custom VBI1
1010 = Custom VBI2
1011 = Custom VBI3
st
VBI line data type
Description
CX25840/1/2/3 Data Sheet
Address 0x424
102284B
8/3/05