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參數(shù)資料
| 型號： | THS8083T |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Triple 8-Bit, 80 MSPS, 3.3-V Video and Graphics Digitizer With Digital PLL |
| 中文描述： | 三8位，80 MSPS的，在3.3 V視頻和圖形數(shù)字轉(zhuǎn)換器與數(shù)字鎖相環(huán) |
| 文件頁數(shù)： | 39/61頁 |
| 文件大?。?/td> | 278K |
| 代理商： | THS8083T |
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3
–
15
PWDN_REF
Powers down internal top and bottom references for all channels (VREFT / VREFB). If powered down,
enables user to supply external VREFT / VREFB references on corresponding pins.
0 = active (default)
1 = powered down
PWDN_BGAP
Powers down bandgap reference. If powered down, enables user to supply external VMID (input common
mode voltage) on corresponding pin.
0 = active (default)
1 = powered down
DTO_DIS
Disables the DTO. Can be disabled when an external clock (EXT_ADCCLK) is used and the user does not
intend to use the PLL output on DTOCLK3. When the PLL is active, it can be used as the clock source for the
ADC channels or the ADC
’
s can still run from EXT_ADCCLK depending on the SEL_ADCCLK register
setting. Note that when the DTO is enabled and the device is configured to use an external clock, the DTO
clock is still available on the DTOCLK3 pin so it can be used as a general-purpose clock synthesizer for other
parts in the system, possibly the display clock if this is different from the input pixel clock.
Since the DTO is also used for internal clock generation, power should always be supplied to the PLL supply
pins, even when the ADC sampling clock is fed from EXT_ADCCLK and DTO_DIS is active.
0 = active (default)
1 = powered down
3.2.44 Register Name: AUX_CTRL
Subaddress: 31 (R/W)
X
MSB
LSB
X
X
CS_DIS
TEST2
TEST1
TEST0
TACT
CS_DIS
Enables/disables the composite sync output on terminal CS/TEST1. The state of the CS output is also
dependent on the clamp range (see section Composite Sync Slicer in functional description).
0 = enabled (default)
1 = disabled
TEST[2..0]
TACT
This is for TI factory testing only and should not be changed from its default all 0 value.
3.2.45 Register Name: CH1_RDBK
Subaddress: 32 (R)
CH1_RDBK7
MSB
LSB
CH1_RDBK0
CH1_RDBK6
CH1_RDBK5
CH1_RDBK4
CH1_RDBK3
CH1_RDBK2
CH1_RDBK1
CH1_RDBK[7..0]:
Readback register of ADC Channel 1
Default: (changed during operation)
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