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參數(shù)資料
| 型號： | AD9980KSTZ-80 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 31/44頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC INTERFACE 8BIT ANALOG 80LQFP |
| 標(biāo)準(zhǔn)包裝： | 90 |
| 應(yīng)用： | 視頻 |
| 接口： | 模擬 |
| 電源電壓： | 3.13 V ~ 3.47 V |
| 封裝/外殼： | 80-LQFP |
| 供應(yīng)商設(shè)備封裝： | 80-LQFP（14x14） |
| 包裝： | 管件 |
| 安裝類型： | 表面貼裝 |
| 配用： | AD9980/PCBZ-ND - KIT EVALUATION AD9980 |
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AD9980
Rev. 0 | Page 37 of 44
0x25
5
Vsync0 Polarity
Indicates the polarity of Vsync0 input.
Table 70. Detected Vsync0 Polarity Results
Detect
Result
0
Vsync polarity is negative
1
Vsync polarity is positive
0x25
4
Vsync1 Polarity
Indicates the polarity of Vsync1 input.
Table 71. Detected Vsync1 Polarity Results
Detect
Result
0
Vsync polarity is negative
1
Vsync polarity is positive
0x25
3
Coast Polarity
Indicates the polarity of the external Coast signal.
Table 72. Detected Coast Polarity Results
Detect
Result
0
Coast polarity is negative
1
Coast polarity is positive
0x25
2
Clamp Polarity
Indicates the polarity of the clamp signal.
Table 73. Detected Clamp Polarity Results
Detect
Result
0
Clamp polarity is negative
1
Clamp polarity is positive
0x25
1
Extraneous Pulses Detection
A second output from the Hsync filter, this status bit tells
whether extraneous pulses are present on the incoming sync
signal. Often extraneous pulses are used for copy protection, so
this status bit can be used for this purpose.
Table 74. Equalization Pulse Detect Bit
Detect
Result
0
No equalization pulses detected during
active Hsync
1
Equalization pulses detected during
active Hsync
HSYNC COUNT
0x26
7:0
Hsyncs/Vsync MSB
The 8 MSBs of the 12-bit counter that reports the
number of Hsyncs/Vsync on the active input. This is
useful for determining the mode and is an aid in
setting the PLL divide ratio.
0x27
7:4
Hsyncs/Vsync LSBs
The 4 LSBs of the 12-bit counter that reports the
number of Hsyncs/Vsync on the active input.
Test Registers
0x28
7:0
Test Register 1
Must be written to 0xBF for proper operation.
0x29
7:0
Test Register 2
Must be written to 0x00 for proper operation.
0x2A
7:0
Test Register 3
Read only bits for future use.
0x2B
7:0
Test Register 4
Read only bits for future use.
0x2C
7:5
Must be written to 000 for proper operation.
0x2C
4
Auto-Offset Hold
A bit for controlling whether the auto-offset function
runs continuously or runs once and holds the result.
Continuous updates are recommended because it
allows the AD9980 to compensate for drift-over time,
temperature, etc. If one-time updates are preferred,
these should be performed every time the part is
powered up and when there is a mode change. To do a
one-time update, first auto-offset must be enabled
(Register 0x1B, Bit 5). Next, this bit (auto-offset hold)
must first be set to 0 to let the auto-offset function
operate and settle to a final value. Auto-offset hold
should then be set to 1 to hold the offset values that
the auto circuitry calculates. The AD9980’s auto-offset
circuit’s maximum settle time is 10 updates. For
example, if the update frequency is set to once every
64 Hsyncs, then the maximum settling time would be
640 Hsyncs (10 × 64 Hsyncs).
Table 75. Auto-Offset Hold
Select
Result
0
Allows auto-offset to update continuously
1
Disables auto-offset updates and holds the
current auto-offset values
0x2C
3:0
Must be written to 0x0 for proper operation.
0x2D
7:0
Test Register 5
Read/write bits for future use. Must be written to
0xE8 for proper operation.
0x2E
7:0
Test Register 6
Read/write bits for future use. Must be written to
0xE0 for proper operation.
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參數(shù)描述 |
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| AD9980KSTZ-95 | 功能描述:IC INTERFACE 8BIT ANALOG 80LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:- 特色產(chǎn)品:NXP - I2C Interface 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:2 通道 I²C 多路復(fù)用器 接口:I²C，SM 總線 電源電壓:2.3 V ~ 5.5 V 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:剪切帶 (CT) 安裝類型:表面貼裝 產(chǎn)品目錄頁面:825 (CN2011-ZH PDF) 其它名稱:568-1854-1 |
| AD9980KSTZ-RL95 | 制造商:Analog Devices 功能描述: |
| AD9980PCB | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Performance 8-Bit Display Interface |
| AD9981 | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Performance 10-Bit Display Interface |
| AD9981/PCB | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Performance 10-Bit Display Interface |
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