AD9628_15 Datasheet, PDF (40/42 Pages) Analog Devices – 12-Bit, 125/105 MSPS, 1.8 V Dual Analog-to-Digital Converter

AD9628
User I/O Control 2 (Register 0x101)
Bit 7—OEB Pin Enable
If the OEB pin enable bit (Bit 7) is set (default), the OEB pin is
enabled. If Bit 7 is clear, the OEB pin is disabled.
Bits[6:1]—Open
Bit 0—SDIO Pull-Down
Bit 0 can be set to disable the internal 30 kΩ pull-down on the
SDIO pin, which can be used to limit the loading when many
devices are connected to the SPI bus.
Data Sheet
User I/O Control 3 (Register 0x102)
Bits[7:4]—Open
Bit 3—VCM Power-Down
Bit 3 can be set high to power down the internal VCM
generator. This feature is used when applying an external
reference.
Bits[2:0]—Open
Rev. C | Page 40 of 42