參數(shù)資料
型號(hào): SAA7114H
廠商: NXP SEMICONDUCTORS
元件分類: 顏色信號(hào)轉(zhuǎn)換
英文描述: PAL/NTSC/SECAM video decoder with adaptive PAL/NTSC comb filter, VBI data slicer and high performance scaler
中文描述: COLOR SIGNAL DECODER, PQFP100
封裝: 14 X 14 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT407-1, LQFP-100
文件頁數(shù): 136/147頁
文件大?。?/td> 759K
代理商: SAA7114H
2004 Mar 03
136
Philips Semiconductors
Product specification
PAL/NTSC/SECAM video decoder with adaptive PAL/NTSC
comb filter, VBI data slicer and high performance scaler
SAA7114
16.2
Audio clock generation part
The given values force the following behaviour of the SAA7114 audio clock generation part:
Used crystal is 24.576 MHz
Expected field frequency is 59.94 Hz (e.g. NTSC M standard)
Generated audio master clock frequency at pin AMCLK is 256
×
44.1 kHz = 11.2896 MHz
AMCLK is externally connected to AMXCLK [short-cut between pins K12 (37) and J12 (41)]
ASCLK = 32
×
44.1 kHz = 1.4112 MHz
ALRCLK is 44.1 kHz.
Table 130
Audio clock part set-up values
Note
1.
All X values must be set to logic 0.
SUB
ADDRESS
(HEX)
REGISTER FUNCTION
BIT NAME
(1)
START VALUES
7 6 5 4 3 2 1 0 HEX
30
audio master clock cycles per
field; bits D7 to D0
audio master clock cycles per
field; bits D15 to D8
audio master clock cycles per
field; bits D17 and D16
reserved
audio master clock nominal
increment; bits D7 to D0
audio master clock nominal
increment; bits D15 to D8
audio master clock nominal
increment; bits D21 to D16
reserved
clock ratio AMXCLK to ASCLK
clock ratio ASCLK to ALRCLK
audio clock generator basic
set-up
reserved
ACPF7 to ACPF0
1 0 1 1 1 1 0 0
BC
31
ACPF15 to ACPF8
1 1 0 1 1 1 1 1
DF
32
X, X, X, X, X, X, ACPF17 and ACPF16 0 0 0 0 0 0 1 0
02
33
34
X, X, X, X, X, X, X, X
ACNI7 to ACNI0
0 0 0 0 0 0 0 0
1 1 0 0 1 1 0 1
00
CD
35
ACNI15 to ACNI8
1 1 0 0 1 1 0 0
CC
36
X, X, ACNI21 to ACNI16
0 0 1 1 1 0 1 0
3A
37
38
39
3A
X, X, X, X, X, X, X, X
X, X, SDIV5 to SDIV0
X, X, LRDIV5 to LRDIV0
X, X, X, X, APLL, AMVR, LRPH,
SCPH
X, X, X, X, X, X, X, X
0 0 0 0 0 0 0 0
0 0 0 0 0 0 1 1
0 0 0 1 0 0 0 0
0 0 0 0 0 0 0 0
00
03
10
00
3B to 3F
0 0 0 0 0 0 0 0
00
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