AD9882A Просмотр технического описания (PDF) - Analog Devices
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AD9882A Datasheet PDF : 40 Pages
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AD9882A
Table 6. Interface Selection Controls
AIO
(0xF Bit 2)
Analog Interface Digital Interface
Detect
Detect
1
X
X
0
0
X
0
1
1
0
1
1
AIS
(0x0F, Bit 1)
0
1
None
X
Active
Interface
Analog
Digital
Neither interface
was detected.
Digital
X
Analog
0
Analog
1
Digital
Description
Force the analog interface active.
Force the digital interface active.
Both interfaces are powered down.
The digital interface was detected. Power
down the analog interface.
The analog interface was detected. Power
down the digital interface.
Both interfaces were detected. The
analog interface gets priority.
Both interfaces were detected. The digital
interface gets priority.
Table 7. Power-Down Modes, 4:2:2 and 4:4:4 Format Descriptions
Mode
Power-
Down1
Analog
Interface
Detect2
Digital Active
Interface Interface
Detect3 Override
Soft Power-Down 1
0
(Seek Mode)
0
0
Digital Interface On 1
0
1
0
Analog Interface On 1
1
4:4:4 Format
Analog Interface On 1
1
4:2:2 Format
Serial Bus
1
1
Arbitrated Interface
Serial Bus
1
1
Arbitrated Interface
Serial Bus
1
1
Arbitrated Interface
Override to Analog 1
1
Interface
Override to Analog 1
1
Interface
Override to Digital 1
X
Interface
Absolute Power-
0
X
Down
0
0
0
0
1
1
1
1
1
1
X
1
X
1
1
1
X
X
Active
Interface
Select
X
4:2:2
Formatting
X
X
X
X
0
X
1
0
0
0
1
1
X
Data Sheet Signals Powered
On
Serial bus, digital interface clock
detect, analog interface clock
detect, SOG
Serial bus; digital interface and
analog interface activity detect;
SOG, band gap reference; red,
green, and blue outputs
Serial bus; analog interface and
digital interface clock detect;
SOG, band gap reference; red,
green, and blue outputs
Serial bus; analog interface and
digital interface clock detect;
SOG, band gap reference; red
and green outputs only
Same as the analog interface in
4:4:4 mode
Same as the analog interface in
4:2:2 mode
Same as digital interface mode
0
0
0
1
1
X
Same as the analog interface
4:4:4 mode
Same as the analog interface
4:2:2 mode
Same as digital interface mode
X
X
Serial bus
1 Power-down is controlled via Bit 1 in Serial Bus Register 0x14.
2 Analog interface detect is determined by OR’ing Bits 7, 6, and 5 in Serial Bus Register 0x15.
3 Digital interface detect is determined by Bit 4 in Serial Bus Register 0x15.
Rev. 0 | Page 11 of 40
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