AD9861 Analog Devices, AD9861 Datasheet - Page 35

• Manufacturer Part Number: AD9861
• Manufacturer: Analog Devices

Specifications of AD9861

• Resolution (bits): 10bit
• # Chan: 2
• Sample Rate: 80MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: 2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

Configuring with SPI
The flexible interface can be configured with register settings. Using the register allows more device programmability. Table 16 shows the
required register writes to configure the AD9861 for FD, optional FD, HD20, optional HD20, HD10, optional HD10, and clone mode.
Note that for modes that use interleaved data buses, enabling 2× or 4× interpolation is required.
Table 16. Registers for Configuring SPI
Register Address
FD, Mode 1
Optional FD, Mode 2
HD20, Mode 4
Optional HD20, Mode 5
HD10, Mode 7
Optional HD10, Mode 8
Clone, Mode 10
Register 0x01 [7:5]
Register 0x14 [4]
Register 0x14 [2]
Register 0x13 [1:0]
Register 0x01 [7:5]
Register 0x14 [4]
Register 0x14 [2]
Register 0x13 [1:0]
Register 0x01 [7:5]
Register 0x14 [4]
Register 0x14 [2]
Register 0x13 [1:0]
Register 0x01 [7:5]
Register 0x14 [4]
Register 0x14 [2]
Register 0x13 [1:0]
Register 0x01 [7:5]
Register 0x14 [4]
Register 0x14 [2]
Register 0x13 [1:0]
Register 0x01 [7:5]
Register 0x14 [4]
Register 0x14 [2]
Register 0x13 [1:0]
Register 0x01 [7:5]
Register 0x14 [0]
Register 0x13 [1:0]
Setting
[000];
High
High
[01] or [10]
[001]
High
High
[01] or [10]
[000];
Low
Low
[00], [01] or [10]
[011]
Low
Low
[00], [01] or [10]
[000]
Low
High
[01] or [10]
[101]
Low
High
[01] or [10]
[111]
High
[01] or [10]
Rev. 0 | Page 35 of 52
Description
clk_mode—Configures timing mode.
SpiFDnHD—Configures FD mode.
SpiB10n20—Configures FD mode.
Interpolation Control—Configures 2× or 4× interpolation.
clk_mode—Configures timing mode.
SpiFDnHD—Configures FD mode.
SpiB10n20—Configures FD mode.
Interpolation Control—Configures 2× or 4× interpolation.
clk_mode—Configures timing mode.
SpiB10n20—Configures HD20 mode.
clk_mode—Configures timing mode.
SpiB10n20—Configures HD20 mode.
clk_mode—Configures timing mode.
SpiB10n20—Configures HD10 mode.
Interpolation Control—Configures 2× or 4× interpolation.
clk_mode—Configures timing mode.
SpiB10n20—Configures HD10 mode.
Interpolation Control—Configures 2× or 4× interpolation.
clk_mode—Configures timing mode.
SpiClone—Configures clone mode.
Interpolation Control—Configures 2× or 4× interpolation.
SpiFDnHD—Configures HD mode.
Interpolation Control—Configures 1×, 2×, or 4× interpolation.
SpiFDnHD—Configures HD mode.
Interpolation Control—Configures 1×, 2×, or 4× interpolation.
SpiFDnHD—Configures HD mode.
SpiFDnHD—Configures HD mode.
AD9861