參數資料
型號: ADV7188
廠商: Analog Devices, Inc.
英文描述: Multiformat SDTV Video Decoder with Fast Switch Overlay Support
中文描述: 標清多格式視頻解碼器支持快速開關重疊
文件頁數: 46/112頁
文件大小: 943K
代理商: ADV7188
ADV7188
PVBEGDELE PAL VSYNC Begin Delay on Even Field,
Address 0xE8 [6]
0 (default)—No delay.
1 (default)—Delays VSYNC going high on an even field by a
line relative to PVBEG.
Rev. 0 | Page 46 of 112
PVBEGSIGN PAL VSYNC Begin Sign, Address 0xE8 [5]
0—Delays the beginning of VSYNC. Set for user manual
programming.
1 (default)—Advances the beginning of VSYNC. Not
recommended for user programming.
PVBEG[4:0] PAL VSYNC Begin, Address 0xE8 [4:0]
The default value of PVBEG is 00101, indicating the PAL
VSYNC begin position.
For all NTSC/PAL VSYNC timing controls, both the V bit in
the AV code and the VSYNC on the VS pin are modified.
Table 63. Recommended User Settings for PAL (see Figure 33)
Register
0x31
0x32
0x33
0x34
0x35
0x36
0x37
0xE8
0xE9
0xEA
Register Name
VSYNC Field Control 1
VSYNC Field Control 2
VSYNC Field Control 3
HSYNC Position 1
HSYNC Position 2
HSYNC Position 3
Polarity
PAL_V_Bit_Beg
PAL_V_Bit_End
PAL_F_Bit_Tog
Write
0x1A
0x81
0x84
0x00
0x00
0x7D
0xA1
0x41
0x84
0x06
0
FIELD 1
OVIDEO
H
V
F
622
623
624
625
1
2
3
4
5
6
7
8
9
10
22
23
24
PVBEG[4:0] = 0x5
PVEND[4:0] = 0x4
PFTOG[4:0] = 0x3
FIELD 2
OVIDEO
H
V
F
PVBEG[4:0] = 0x5
PVEND[4:0] = 0x4
PFTOG[4:0] = 0x3
310
311
312
313
314
315
316
317
318
319
320
321
322
335
336
337
Figure 32. PAL Default (BT.656). The Polarity of H, V, and F is Embedded in the Data.
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