參數(shù)資料
型號(hào): ADV7188
廠商: Analog Devices, Inc.
英文描述: Multiformat SDTV Video Decoder with Fast Switch Overlay Support
中文描述: 標(biāo)清多格式視頻解碼器支持快速開關(guān)重疊
文件頁(yè)數(shù): 43/112頁(yè)
文件大?。?/td> 943K
代理商: ADV7188
ADV7188
VSEHE VS End Horizontal Position Even, Address 0x33 [6]
This bit selects the position within a line at which the VS pin
(not the bit in the AV code) becomes inactive. Some follow-on
chips require the VS pin to change state only when HS is
high/low.
Rev. 0 | Page 43 of 112
0 (default)—The VS pin goes low (inactive) at the middle of a
line of video (even field).
1—The VS pin changes state at the start of a line (even field).
PVS Polarity VS, Address 0x37 [5]
The polarity of the VS pin can be inverted using the PVS bit.
0 (default)—VS is active high.
1—VS is active low.
PF Polarity FIELD, Address 0x37 [3]
The polarity of the FIELD pin can be inverted using the PF bit.
0 (default)—FIELD is active high.
1—FIELD is active low.
Table 62. Recommended User Settings for NTSC (See Figure 28)
Register
0x31
0x32
0x33
0x34
0x35
0x36
0x37
0xE5
0xE6
0xE7
Register Name
VSYNC Field Control 1
VSYNC Field Control 2
VSYNC Field Control 3
HSYNC Position 1
HSYNC Position 2
HSYNC Position 3
POLARITY
NTSV_V_BIT_BEG
NTSC_V_BIT_END
NTSC_F_BIT_TOG
Write
0x1A
0x81
0x84
0x00
0x00
0x7D
0xA1
0x41
0x84
0x06
0
OVIDEO
FIELD 1
FIELD 2
H
V
F
OVIDEO
H
V
F
525
1
2
3
4
5
6
7
8
9
10
11
12
13
19
20
21
22
NVBEG[4:0] = 0x5
NVBEG[4:0] = 0x5
NVEND[4:0] = 0x4
NVEND[4:0] = 0x4
NFTOG[4:0] = 0x3
NFTOG[4:0] = 0x3
*REG 0x04, BIT 7 = 1
*REG 0x04, BIT 7 = 1
*MUST BE MANUALLY SHIFTED IF NEWAVMODE = 1.
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
283
284
285
Figure 27. NTSC Default (BT.656). The Polarity of H, V, and F is Embedded in the Data.
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