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| 型号： | AD9983AKCPZ-140 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 28/44页 |
| 文件大小： | 0K |
| 描述： | IC INTRFACE 8BIT 140MSPS 64LFCSP |
| 标准包装： | 1 |
| 应用： | 视频 |
| 接口： | 模拟 |
| 电源电压： | 1.7 V ~ 3.47 V |
| 封装/外壳： | 64-VFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 64-LFCSP-VQ（9x9） |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
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AD9983A
Rev. 0 | Page 34 of 44
INPUT AND POWER CONTROL
0x1E—Bit[7] Channel Select Override
This bit provides an override to the automatic input channel
selection. Power-up default setting is 0.
Table 43. Channel Source Override
Override
Result
0
Channel input source determined by chip
1
Channel input source determined by user
Register 0x1E, Bit 6
0x1E—Bit[6] Channel Select
This bit selects the active input channel if Register 0x1E, Bit 7 = 1.
This selects between Channel 0 data and syncs or Channel 1
data and syncs. Power-up default setting is 0.
Table 44. Channel Select
Channel Select
Result
0
Channel 0 data and syncs are selected
1
Channel 1 data and syncs are selected
0x1E—Bit[5] Programmable Bandwidth
This bit selects between a low or high input bandwidth. It is
useful in limiting noise for lower frequency inputs. The power-
up default setting is 1. Low analog input bandwidth is ~100 MHz;
high analog input bandwidth is ~200 MHz.
Table 45. Input Bandwidth Select.
Input Bandwidth
Result
0
Low analog input bandwidth
1
High analog input bandwidth
0x1E—Bit[4] Power-Down Control Select
This bit determines whether power-down is controlled
manually or automatically by the chip. If automatic control is
selected (Register 0x1E, Bit 4), the AD9983A decision is based
on the status of the sync detect bits (Register 0x24, Bit 2, Bit 3,
Bit 6, and Bit 7). If either an Hsync or a sync-on-green input is
detected on any input, the chip powers up or powers down. For
manual control, the AD9983A allows the flexibility of control
through both a dedicated pin and a register bit. The dedicated
pin allows a hardware watchdog circuit to control power-down,
while the register bit allows power-down to be controlled by
software. With manual power-down control, the polarity of the
power-down pin must be set (Register 0x1E, Bit 2) whether it is
used or not. If unused, it is recommended to set the polarity to
active high and hardwire the pin to ground with a 10 kΩ resistor.
Table 46. Auto Power-Down Select.
Power-Down Select
Result
0
Manual power-down control
(user determines power-down)
1
Auto power-down control
(chip determines power-down)
0x1E—Bit[3] Power-Down
This bit is used to manually place the chip in power-down
mode. It is only used if manual power-down control is selected
(see Bit 4 above). Both the state of this register bit and the
power-down pin (Pin 17) are used to control manual power-
down. (See the Power Management section for more details on
power-down.)
Table 47. Power-Down Settings
Power-Down Select
Pin 17
Result
0
Normal operation
1
X
Power-down
0x1E—Bit[2] Power-Down Pin Polarity
This bit defines the polarity of the power-down pin (Pin 17). It
is only used if manual power-down control is selected (see
).
Table 48. Power-Down Pin Polarity
Select
Result
0
Power-down pin is active low
1
Power-down pin is active high
0x1E—Bit[1] Power-Down Fast Switching Control
This bit controls a special fast switching mode. With this bit the
AD9983A can stay active during power-down and only put the
outputs in high impedance. This option is useful when the data
outputs from two chips are connected on a PCB and the user
wants to switch instantaneously between the two.
Table 49. Power-Down Fast Switching Control
Fast Switching Control
Result
0
Normal power-down operation
1
The chip stays powered up and the
outputs are put in high impedance
mode
0x1E—Bit[0] SOGOUT High Impedance Control
This bit controls whether the SOGOUT pin is in high
impedance or not, when in power-down mode. In most cases,
SOGOUT is not put in high impedance during normal oper-
ation. It is usually needed for sync detection by the graphics
controller. The option to put SOGOUT in high impedance is
included mainly to allow for factory testing modes.
Table 50. SOGOUT High Impedance Control
SOGOUT Control
Result
0
SOGOUT operates as normal during
power-down
1
SOGOUT is in high impedance
during power-down
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD9983AKCPZ-1401 | 制造商:AD 制造商全称:Analog Devices 功能描述:High Performance 8-Bit Display Interface |
| AD9983AKCPZ-170 | 功能描述:IC INTRFACE 8BIT 170MSPS 64LFCSP RoHS:是 类别:集成电路 (IC) >> 接口 - 专用 系列:- 特色产品:NXP - I2C Interface 标准包装:1 系列:- 应用:2 通道 I²C 多路复用器 接口:I²C，SM 总线 电源电压:2.3 V ~ 5.5 V 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:剪切带 (CT) 安装类型:表面贴装 产品目录页面:825 (CN2011-ZH PDF) 其它名称:568-1854-1 |
| AD9983AKCPZ-1701 | 制造商:AD 制造商全称:Analog Devices 功能描述:High Performance 8-Bit Display Interface |
| AD9983AKSTZ-140 | 功能描述:IC DISPLAY 8BIT 140MSPS 80LQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 专用 系列:- 特色产品:NXP - I2C Interface 标准包装:1 系列:- 应用:2 通道 I²C 多路复用器 接口:I²C，SM 总线 电源电压:2.3 V ~ 5.5 V 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:剪切带 (CT) 安装类型:表面贴装 产品目录页面:825 (CN2011-ZH PDF) 其它名称:568-1854-1 |
| AD9983AKSTZ-1401 | 制造商:AD 制造商全称:Analog Devices 功能描述:High Performance 8-Bit Display Interface |
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