cx25840 Conexant Systems, Inc., cx25840 Datasheet - Page 214

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

Register Map
5-72
VBI Alternate 2 Frame Code
[7:0]
VBI Miscellaneous Config 1
[7:6]
[5]
[4]
[3:2]
[1]
[0]
TTX Packet Address 1
[7:0]
Bits
Bits
Bits
RW
RZ
RW
RW
RW
RW
RW
RW
Type
Type
Type
0x00
00
0
0
01
1
0
0000
Default
Default
Default
TTX_PKTADRL_LB
FC_ALT2
RESERVED
MOJI_PACK_DIS
VPS_DEC_DIS
CRI_MARG_SCALE
EDGE_RESYNC_EN
ADAPT_SLICE_DIS
Name
Name
Name
Conexant
Moji packing disable.
0 = WST525, system D formats cause the decoder to extract the
first 6 bits for the first byte packet. The subsequent bit stream is
packed into standard byte packets.
1 = The WST 525, system D bit stream is packed into byte
packets in a normal fashion.
VPS biphase decode disable.
0 = VPS formats are decoded based on a two-bit biphase pattern.
1 = Raw slice bits are transmitted
Clock run-in margin scale. Used to loosen or tighten lock criteria
for clock run-in.
00 = Divide default timing margin by 2
01 = Use default timing margin
10 = Multiply default timing margin by 2
11 = Multiply default timing margin by 4
Enable dynamic timing resynchronization based on edge
detection.
0 = Sample point timing is determined by initial edge
synchronization during clock run-in.
1 = Sample point timing is resynchronized upon detecting any
edge during data pattern.
Disable adaptive slice level
0 = Slice level comes from averaging points in the clock run-in.
1 = Slice level is set to predetermined level based on mode.
Low byte of Teletext packet address lower limit for packet
filtering purposes. Enabled when VBIx_TTX_MODE = 1.
Alternate frame code used when VBIMODE matches
FC_ALT2_TYPE.
Description
Description
Description
CX25840/1/2/3 Data Sheet
Address 0x43D
Address 0x43B
Address 0x43C
102284B
8/3/05