tw9910 ETC-unknow, tw9910 Datasheet - Page 13

• Manufacturer Part Number: tw9910
• Description: Power Ntsc/pal/secam Video Decoder With Slicer
• Manufacturer: ETC-unknow

TW9910
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TECHWELL, INC.
BYTE
4N+6
4N+7
4N+8
No.
10
11
12
13
1
2
3
4
5
6
7
8
9
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EP is Even Parity of bits 5 to 0 in same 1 byte.
NEP is inverted EP in same 1 byte.
{DID4,DID3,DID2,DID1,DID0} is DID register value.
{SDID5,SDID4,SDID3,SDID2,SDID1,SDID0} is SDID register value.
{DC5,DC4,DC3,DC2,DC1,DC0} is the number of DOWRD data length from UDW1 to UDW4N.On this table,
{DC5,DC4,DC3,DC2,DC1,DC0} is N(decimal).
OP is Odd Parity of bits 6 to 0 in same 1 byte.
FID=0: odd field ; FID=1: even field.
{LN8,LN7,LN6,LN5,LN4,LN3,LN2,LN1,LN0} is the line number of current sliced VBI data.
{DT3,DT2,DT1,DT0} is the Data Type shown on Table
NCS6 is inverted CS6.
{CS6,CS5,CS4,CS3,CS2,CS1,CS0} is the checksum value calculated from DID to UDW4N.
UDW1 to UDW4N are the User data words(UDW) shown on ITU-R BT.1364 ANC data packet type 2.
[BC5,BC4,BC3,BC2,BC1,BC0] is the number of valid bytes from UDW1 to UDW4N.
FILLDATA is FILLDATA register value. FILLDATA is inserted after last valid bytes to make 4N number byte stream sometimes.
NCS6
OP
Sliced VBI Data output format
After 4 bytes of EAV code, sliced VBI ANC data packets are generated by following format. Byte1 to
Byte4N+7 data stream is formatted according to ITU-R BT.1364 ANC data packet type2. BC data byte
is optional and not included in ANC data packet type 2 BC data byte is inserted after ANC data packet
type2.
MSB
NEP
NEP
NEP
OP
OP
D7
0
1
1
Table 6. Sliced VBI ANC data packet
CS6
0
LN2
FID
D6
EP
EP
EP
0
1
1
Sliced VBI Data byte last or FILLDATA
CS5
BC5
SDID5
DC5
LN8
LN1
D5
0
1
1
0
Sliced VBI Data byte 1
Sliced VBI Data byte 2
Sliced VBI Data byte 3
Sliced VBI Data byte 4
Sliced VBI Data byte 5
CS4
BC4
SDID4
DID4
DC4
LN7
LN0
D4
0
1
1
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CS3
BC3
SDID3
DID3
DC3
LN6
DT3
D3
0
1
1
CS2
BC2
13
SDID2
DID2
DC2
LN5
DT2
D2
0
1
1
CS1
BC1
SDID1
DID1
DC1
LN4
DT1
D1
0
1
1
CS0
BC0
SDID0
DID0
LSB
DC0
LN3
DT0
D0
0
1
1
DESCRIPTION
Ancillary data flag
DID
SDID
DC
IDI1. UDW1
IDI2. UDW 2
Sliced VBI Data No.1. UDW3
Sliced VBI Data No.2. UDW4
Sliced VBI Data No.3 UDW5
Sliced VBI Data No.4. UDW6
Sliced VBI Data No.5. UDW7
Sliced VBI Data Last or FILLDATA. UDW 4N
CS
BC
Low Power NTSC/PAL/SECAM
Video Decoder with VBI Slicer
09/21/2006
REV.
A