Figure 6.17-10 Standard Pcm Audio Timing Diagram (Format = 0X4 ; Chwidth≦Datwidth); Figure 6.17-11 Pcm With Msb Justified Data Format (Format = 0X5 ; Chwidth > Datwidth); Figure 6.17-12 Pcm With Lsb Justified Data Format (Format = 0X6 ; Chwidth > Datwidth) - Nuvoton ISD94124BYI Technical Reference Manual

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PCM with MSB justified, and PCM with LSB justified data format.

Figure 6.17-10 Standard PCM Audio Timing Diagram (FORMAT = 0x4 ; CHWIDTH≦DATWIDTH)

Figure 6.17-11 PCM with MSB Justified Data Format (FORMAT = 0x5 ; CHWIDTH > DATWIDTH)

Figure 6.17-12 PCM with LSB Justified Data Format (FORMAT = 0x6 ; CHWIDTH > DATWIDTH)

6.17.5.4 TDM Multi-channel transmission

The PCM mode in this I

Multiplexed (TDM) method allows multiple channels of audio data to be transmitted on a single

data line. The TDM interface is similar to the 2-channel PCM audio interface with the exception

that more audio channels are transmitted within a sample frame which is defined by a period of

the I2S_LRCLK. The channel number of TDM interface is typically 4, 6, or 8 and it is selected by

TDMCHNUM (I2S_CTL0[31:30]).

Same as previous I

word followed by a sufficient number of zero data bits to complete one channel block. The bit-

width of data word and channel block are defined by DATWIDTH (I2S_CTL0[5:4]) and CHWIDTH

ISD94100 Series Technical Reference Manual

Left channel of frame N

Left channel of frame N

Left channel of frame N

S controller also supports TDM transmission. The Time Division

S and PCM descriptions, each channel block is comprised of the audio data

Page 806 of 928

Right channel of frame N

Right channel of frame N

Right channel of frame N

Left channel

of frame N+1

Left channel

of frame N+1

Left channel

of frame N+1

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