SAA7108AE Datasheet, PDF (164/208 Pages) NXP Semiconductors – HD-CODEC

NXP Semiconductors
SAA7108AE; SAA7109AE
HD-CODEC
11.2.5.6 Subaddresses 91h to 93h
Table 204. X port formats and configuration; register set A [91h[7:3]] and B [C1h[7:3]]^[1]
Scaler input format and configuration
source selection
Control bits 7 to 3
CONLV HLDFV SCSRC1 SCSRC0 SCRQE
Only if XRQT[83h[2]] = 1: scaler input source X
X
X
X
0
reacts on SAA7108AE; SAA7109AE request
Scaler input source is a continuous data
X
X
X
X
1
stream, which cannot be interrupted (must be
logic 1, if SAA7108AE; SAA7109AE decoder
part is source of scaler or XRQT[83h[2]] = 0)
Scaler input source is data from decoder, data X
X
0
0
X
type is provided according to Table 28
Scaler input source is Y-C_B-C_R data from
X
X
0
1
X
X port
Scaler input source is raw digital CVBS from X
X
1
0
X
selected analog channel, for backward
compatibility only, further use is not
recommended
Scaler input source is raw digital CVBS (or X
X
1
1
X
16-bit Y + C_B-C_R, if no 16-bit outputs are
active) from X port
SAV/EAV code bits 6 and 5 (F and V) may X
0
X
X
X
change between SAV and EAV
SAV/EAV code bits 6 and 5 (F and V) are
X
1
X
X
X
synchronized to scalers output line start
SAV/EAV code bit 5 (V) and V gate on
0
X
X
X
X
pin IGPV as generated by the internal
processing; see Figure 48
SAV/EAV code bit 5 (V) and V gate are
1
X
X
X
X
inverted
[1] X = don’t care.
Table 205. X port formats and configuration; register set A [91h[2:0]] and B [C1h[2:0]]^[1]
Scaler input format and configuration format control
Control bits 2 to 0
FSC2^[2] FSC1^[2] FSC0
Input is Y-C_B-C_R 4 : 2 : 2 like sampling scheme
Input is Y-C_B-C_R 4 : 1 : 1 like sampling scheme
Chroma is provided every line, default
X
X
0
X
X
1
0
0
X
Chroma is provided every 2nd line
0
1
X
Chroma is provided every 3rd line
1
0
X
Chroma is provided every 4th line
1
1
X
[1] X = don’t care.
[2] FSC2 and FSC1 only to be used if X port input source does not provide chroma information for every input
line. X port input stream must contain dummy chroma bytes.
SAA7108AE_SAA7109AE_3
Product data sheet
Rev. 03 — 6 February 2007
© NXP B.V. 2007. All rights reserved.
164 of 208