ADS5294IPFPR datasheet(60/82 Pages) TI2

60 / 82 page

ADS5294

SLAS776E – NOVEMBER 2011 – REVISED APRIL 2018

www.ti.com

Product Folder Links: ADS5294

Submit Documentation Feedback

By default, the ADC output is in straight-offset binary mode. Programming the BTC_MODE bit to '1' inverts the

MSB, and the output becomes Binary 2s-complement mode. Also by default, the first bit of the frame (following

the rising edge of CLKP) is the LSB of the ADC output. Programming the MSB_FIRST mode inverts the bit order

in the word, and the MSB is output as the first bit following CLKP rising edge.

9.6.1.16 Programmable Mapping Between Input Channels and Output Pins

Table 25. Mapping Between Input Channels and Output Pins

ADDR.

(HEX)

D15 D14 D13 D12 D11 D10

NAME

MAP_CH1234_TO_OUT1A

MAP_CH1234_TO_OUT1B

MAP_CH1234_TO_OUT2A

MAP_CH1234_TO_OUT2B

MAP_CH1234_TO_OUT3A

MAP_CH1234_TO_OUT3B

MAP_CH1234_TO_OUT4A

MAP_CH1234_TO_OUT4B

MAP_CH5678_TO_OUT5B

MAP_CH5678_TO_OUT5A

MAP_CH5678_TO_OUT6B

MAP_CH5678_TO_OUT6A

MAP_CH5678_TO_OUT7B

MAP_CH5678_TO_OUT7A

MAP_CH5678_TO_OUT8B

MAP_CH5678_TO_OUT8A

The ADS5294 has 16 pairs of LVDS channel outputs. The mapping of ADC channels to LVDS output channels is

programmable to allow for flexibility in board layout. The 16 LVDS channel outputs are split into two groups of

eight LVDS pairs. Within each group four ADC input channels are multiplexed into the eight LVDS pairs

depending on the modes of operation whether it is in 1-wire mode or 2-wire mode.

Input channels 1 to 4 map to any of the LVDS outputs OUT1A or OUT1B to OUT4A or OUT4B (using the

MAP_CH1234_TO_OUTnA or OUTnB). Similarly, input channels 5 to 8 can be mapped to any of the LVDS

outputs OUT5A or OUT5B to OUT8A or OUT8B (using the MAP_CH5678_TO_OUTnA or OUTnB). The block

diagram of the mapping is listed in Figure 61.

ADS5294IPFPR датащи(PDF) 60 Page - Texas Instruments