ZHCSD36A November 2014 – March 2019 DS90UB947-Q1
PRODUCTION DATA.
In addition to the I2S audio interface, the DS90UB947-Q1 serializer also supports TDM format. Since a number of specifications for TDM format are in common use, the DS90UB947-Q1 offers flexible support for word length, bit clock, number of channels to be multiplexed, etc. For example, let’s assume that word clock signal (I2S_WC) period = 256 × bit clock (I2S_CLK) time period. In this case, the DS90UB947-Q1 can multiplex 4 channels with maximum word length of 64 bits each, or 8 channels with maximum word length of 32 bits each. Figure 23 illustrates the multiplexing of 8 channels with 24 bit word length, in a format similar to I2S.