ADS5402 Datasheet, PDF (30/40 Pages) Texas Instruments – Dual 12-Bit 800Msps Analog-to-Digital Converter

ADS5402
SLAS936 – MARCH 2013
www.ti.com
DESCRIPTION OF SERIAL INTERFACE REGISTERS
Register
Address
Register Data
A7-A0 in hex D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
0
3/4 Dec- 0 ChA 0
0 ChB 0
0
0
0
0
0
0
0
0
Wire ima-
High/
High/
SPI tion
Low
Low
Filter
Pass
Pass
EN
D15 3/4 Wire SPI
Default 0
Enables 4-bit serial interface when set
0
3 wire SPI is used with SDIO pin operating as bi-directional I/O port
1
4 wire SPI is used with SDIO pin operating as data input and SDO pin as data output port.
D14 Decimation
Filter EN
Default 0
2x decimation filter is enabled when bit is set
0
Normal operation with data output at full sampling rate
1
2x decimation filter enabled
D12 ChA High/Low (Decimation filter must be enabled first: set bit D14)
Pass
Default 0
0
Low Pass
1
High Pass
D9
ChB High/Low (Decimation filter must be enabled first: set bit D14)
Pass
Default 0
0
Low Pass
1
High Pass
30
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