SAA7108AE Datasheet, PDF (175/208 Pages) NXP Semiconductors – HD-CODEC

NXP Semiconductors
SAA7108AE; SAA7109AE
HD-CODEC
Table 233. Audio clock part setup values
Subaddress Register function
(hexadecimal)
Bit name^[1]
Values (binary)
Start
7 6 5 4 3 2 1 0 ^{(hexadecimal)}
30
audio master clock cycles per ACPF7 to ACPF0
field; bits 7 to 0
1 0 1 1 1 1 0 0 BC
31
audio master clock cycles per ACPF15 to ACPF8
field; bits 15 to 8
1 1 0 1 1 1 1 1 DF
32
audio master clock cycles per X, X, X, X, X, X, ACPF17 and 0 0 0 0 0 0 1 0 02
field; bits 17 and 16
ACPF16
33
reserved
X, X, X, X, X, X, X, X
0 0 0 0 0 0 0 0 00
34
audio master clock nominal ACNI7 to ACNI0
increment; bits 7 to 0
1 1 0 0 1 1 0 1 CD
35
audio master clock nominal ACNI15 to ACNI8
increment; bits 15 to 8
1 1 0 0 1 1 0 0 CC
36
audio master clock nominal X, X, ACNI21 to ACNI16
0 0 1 1 1 0 1 0 3A
increment; bits 21 to 16
37
reserved
X, X, X, X, X, X, X, X
0 0 0 0 0 0 0 0 00
38
clock ratio AMXCLK to ASCLK X, X, SDIV5 to SDIV0
0 0 0 0 0 0 1 1 03
39
clock ratio ASCLK to ALRCLK X, X, LRDIV5 to LRDIV0
0 0 0 1 0 0 0 0 10
3A
audio clock generator basic X, X, X, X, APLL, AMVR, LRPH, 0 0 0 0 0 0 0 0 00
setup
SCPH
3B to 3F
reserved
X, X, X, X, X, X, X, X
0 0 0 0 0 0 0 0 00
[1] All X values must be set to logic 0.
12.3 Data slicer and data type control part
The given values force the following behavior of the SAA7108AE; SAA7109AE VBI data
slicer part:
• Closed captioning data are expected at line 21 of field 1 (60 Hz/525 line system)
• All other lines are processed as active video
• Sliced data are framed by ITU 656 like SAV/EAV sequence (DID[5:0] = 3Eh ⇒ MSB
of SAV/EAV = 1)
Table 234. Data slicer start setup values
Subaddress Register function
(hexadecimal)
40
slicer control 1
41 to 53
54
55 to 57
line control register 2 to 20
line control register 21
line control register
58
programmable framing code
59
horizontal offset for slicer
5A
vertical offset for slicer
Bit name^[1]
Values (binary)
Start
7 6 5 4 3 2 1 0 ^{(hexadecimal)}
X, HAM_N, FCE, HUNT_N, X, X, 0 1 0 0 0 0 0 0 40
X, X
LCRn_7 to LCRn_0 (n = 2 to 20) 1 1 1 1 1 1 1 1 FF
LCR21_7 to LCR21_0
0 1 0 1 1 1 1 1 5F
LCRn_7 to LCRn_0
(n = 22 to 24)
1 1 1 1 1 1 1 1 FF
FC7 to FC0
0 0 0 0 0 0 0 0 00
HOFF7 to HOFF0
0 1 0 0 0 1 1 1 47
VOFF7 to VOFF0
0 0 0 0 0 1 1 0 06^[2]
SAA7108AE_SAA7109AE_3
Product data sheet
Rev. 03 — 6 February 2007
© NXP B.V. 2007. All rights reserved.
175 of 208