ADSP-214xx SHARC Processor Hardware Reference C-9
Audio Frame Formats
AES/EBU/SPDIF Formats
For this section, it is important to be familiar with serial digital applica-
tion interface standards IEC-60958, EIAJ CP-340, AES3 and AES11.
S/PDIF data is transmitted as a stream of 32-bit data words. A data frame
consists of 384 words in total, with 192 data words transmitted for the A
stereo channel, and 192 data words transmitted for the B stereo channel.
The difference between the AES/EBU and S/PDIF protocol is the channel
status bit. If the channel status bit is not set, then:
• 0 = Consumer/professional
• 1 = Normal/compressed data
• 2 = Copy prohibit/copy permit
• 3 = 2 channels/4 channels
• 4 = n/a
• 5 = No pre-emphasis/pre-emphasis
Figure C-3. Packed TDM4 Mode
LRCLKx
(1 PERIOD)
BCLKx
(64 PERIODS)
SDATA_INx,
SDATA_OUTx
(4 CHANNELS)
16 BITS16 BITS 16 BITS 16 BITS
To Next Page
Loading...
