CS8413 datasheet(16/38 Pages) ETC

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CS8413 CS8414

DS240F1

Buffer Mode 0

The user data buffer previously described is identi-

cal for all modes. Buffer mode 0 allocates the rest

of the buffer to channel status data. This mode

stores an entire block of channel status in 24 mem-

ory locations from address 08H to 1FH. Channel

status (CS) data is different from user data in that

channel status data is independent for each channel.

A block of CS data is defined as one bit per frame,

not one bit per sub-frame; therefore, there are two

blocks of channel status. The CS2/CS1 bit in CR1

selects which channel is stored in the buffer. In a

typical system sending stereo data, the channel sta-

tus data for each channel would be identical.

Flag 0

Flag 1

Mode 0

Flag 1

Modes 1 & 2

Flag 2

B 0

A 0

B 1

A 1

B 2

A 2

B 7

A 7

Aux Data

03 4

LSB

Audio Data

Preamble

28 29 30 31

VU CP

MSB

(384 Audio Samples)

23 0123

4567

9 101112 13 14 15 16 17 18 19 20 21 22 23 01

Channel Status Byte

(Expanded)

bit

Frame

Sub-frame

Block

Validity

User Data

Channel Status Data

Parity Bit

Figure 11. CS8413 Status Register Flag Timing

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