ADC32RF44 Datasheet, PDF (60/134 Pages) Texas Instruments – Dual-Channel, 14-Bit, 2.6-GSPS, Analog-to-Digital Converter

ADC32RF44
SBAS809 – FEBRUARY 2017
www.ti.com
9.4.3.1 Serial Register Write: Analog Bank
The internal register of the ADC32RF44 analog bank (Figure 115) can be programmed by:
1. Driving the SEN pin low.
2. Initiating a serial interface cycle selecting the page address of the register whose content must be written. To
select the master page: write address 0012h with 04h. To select the ADC page: write address 0011h with
FFh.
3. Writing the register content. When a page is selected, multiple registers located in the same page can be
programmed.
0000
Register Address [11:0]
Register Data [7:0]
SDIN
R/W M P CH A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0
SCLK
SEN
RESET
Figure 115. SPI Write Timing Diagram for the Analog Bank
9.4.3.2 Serial Register Readout: Analog Bank
Contents of the registers located in the two pages of the analog bank (Figure 116) can be readback by:
1. Driving the SEN pin low.
2. Selecting the page address of the register whose content must be read. Master page: write address 0012h
with 04h. ADC page: write address 0011h with FFh.
3. Setting the R/W bit to 1 and writing the address to be read back.
4. Reading back the register content on the SDOUT pin. When a page is selected, the contents of multiple
registers located in same page can be readback.
SDIN
1000
Register Address [11:0]
Register Data [7:0] = XX
R/W M P CH A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 D1 D0
SCLK
SEN
RESET
SDOUT
D7 D6 D5 D4 D3 D2 D1 D0
SDOUT [7:0]
Figure 116. SPI Read Timing Diagram for the Analog Bank
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