Data Sheet

FSC-BT826HC
11
5.4.1 PCM Format
FrameSync is the synchronizing function used to control the transfer of DAC_Data and
ADC_Data. A Long FrameSync indicates the start of ADC_Data at the rising edge of
FrameSync (Figure 3), and a Short FrameSync indicates the start of ADC_Data at the falling
edge of FrameSync (Figure 4).
Figure 4：Long FrameSync
Figure 5：Short FrameSync
5.4.2 Sign Extension and Zero Padding for 8-Bit and 13-Bit Samples
For 16-bit linear PCM output, 3 or 8 unused bits may be sign extended/zero padded.
Figure 6：16-Bit Output Data with 8-Bit PCM Sample Data and Sign Extension
Figure 7：16-Bit Output Data with 8-Bit PCM Sample Data and Zero Padding