DS90UA101-Q1: Number of data channels using TDM

Hello,
Please refer to the DS90UA101 datasheet page 24 for information on TDM format.

TDM Format
There are no well defined rules for TDM format and it can be implemented in large number of ways depending upon the word length, bit clock, number of channels to be multiplexed, etc. For example, let’s assume that word clock signal (LRCK) period = 256 * bit clock (BCK) time period. In this case, we can multiplex 4 channels with maximum word length of 64 bits each, or 8 channels with maximum word length of 32 bits each. Figure 19 illustrates the multiplexing of 8 channels with 24 bit word length, in a format similar to I2S.
Pulse width of LRCK can be used to define a clock period for BCK or to define a slot period, i.e., the period for which individual channel can be active on the shared data line.
If the number of audio channels is more than 8, DS90UA101-Q1/DS90UA102-Q1 can easily support multiplexed data with additional devices to multiplex and de-multiplex the data. The number of channels multiplexed on each data line must be selected as a power of 2, for example, 2/ 4/ 8.