參數(shù)資料
型號(hào)： ADV7189BKSTZ10F
廠商： Analog Devices, Inc.
英文描述： Multiformat SDTV Video Decoder
中文描述： 標(biāo)清多格式視頻解碼器
文件頁(yè)數(shù)： 16/104頁(yè)
文件大小： 805K
代理商： ADV7189BKSTZ10F
ADV7189B
GLOBAL CONTROL REGISTERS
Register control bits listed in this section affect the whole chip.
Rev. B | Page 16 of 104
POWER-SAVE MODES
Power-Down
PDBP, Address 0x0F[2]
The digital core of the ADV7189B can be shut down by using a
pin (PWRDN) and a bit (PWRDN, see below). The PDBP con-
trols which of the two has the higher priority. The default is to
give the pin (PWRDN) priority. This allows the user to have the
ADV7189B powered down by default.
When PDBD is 0 (default), the digital core power is controlled
by the PWRDN pin (the bit is disregarded).
When PDBD is 1, the bit has priority (the pin is disregarded).
PWRDN, Address 0x0F[5]
Setting the PWRDN bit switches the ADV7189B into a chip-
wide power-down mode. The power down stops the clock
from entering the digital section of the chip, thereby freezing
its operation. No I
2
C bits are lost during power down. The
PWRDN bit also affects the analog blocks and switches them
into low current modes. The I
2
C interface itself is unaffected,
and remains operational in power-down mode.
The ADV7189B leaves the power-down state if the PWRDN bit
is set to 0 (via I
2
C), or if the overall part is reset using the
RESET pin.
Note: PDBP must be set to 1 for the PWRDN bit to power down
the ADV7189B.
When PWRDN is 0 (default), the chip is operational.
When PWRDN is 1, the ADV7189B is in chip-wide power down.
ADC Power-Down Control
The ADV7189B contains three 12-bit ADCs (ADC 0, ADC 1,
and ADC 2). If required, it is possible to power down each ADC
individually.
The ADCs should be powered down when in:
CVBS mode. ADC 1 and ADC 2 should be powered down
to save on power consumption.
S-Video mode. ADC 2 should be powered down to save on
power consumption.
PWRDN_ADC_0, Address 0x3A[3]
When PWRDN_ADC_0 is 0 (default), the ADC is in normal
operation.
When PWRDN_ADC_0 is 1, ADC 0 is powered down.
PWRDN_ADC_1, Address 0x3A[2]
When PWRDN_ADC_1 is 0 (default), the ADC is in normal
operation.
When PWRDN_ADC_1 is 1, ADC 1 is powered down.
PWRDN_ADC_2, Address 0x3A[1]
When PWRDN_ADC_2 is 0 (default), the ADC is in normal
operation.
When PWRDN_ADC_2 is 1, ADC 2 is powered down.
RESET CONTROL
Chip Reset (RES), Address 0x0F[7]
Setting this bit, equivalent to controlling the RESET pin on the
ADV7189B, issues a full chip reset. All I
2
C registers get reset to
their default values. Note: Some register bits do not have a reset
value specified. They keep their last written value. These bits are
marked as having a reset value of x in the register table. After
the reset sequence, the part immediately starts to acquire the
incoming video signal.
After setting the RES bit, or initiating a reset via the pin, the
part returns to the default mode of operation with respect to
its primary mode of operation. All I
2
C bits are loaded with
their default values, making this bit self-clearing.
Executing a software reset takes approximately 2 ms. However,
it is recommended to wait 5 ms before any further I
2
C writes are
performed.
The I
2
C master controller receives a no-acknowledge condi-
tion on the ninth clock cycle when chip reset is implemented.
See the
147H
MPU Port Description section for a full description.
When RES is 0 (default), operation is normal.
When RES is 1, the reset sequence starts.
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PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADV7189BKSTZ10F2 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Multiformat SDTV Video Decoder
ADV7189BST 制造商:Analog Devices 功能描述:
ADV7189KST 制造商:Rochester Electronics LLC 功能描述:12BIT NTSC/PAL/SECAMVIDDECOD I.C. - Tape and Reel 制造商:Analog Devices 功能描述:IC VIDEO ENCODER
ADV7189XST 制造商:Analog Devices 功能描述:54MHZ NTSC/PAL ENCODER(DNR+MACROVISON)IC - Bulk
ADV7189XST-X2 制造商:Analog Devices 功能描述:54MHZ NTSC/PAL ENCODER(DNR+MACROVISON)IC - Bulk
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