ADAV803ASTZ datasheet(37/56 Pages) AD

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ADAV803

Rev. 0 | Page 37 of 56

TxBCONF3

TxBCONF2–1

TxBCONF0

Table 28. Transmitter Buffer Configuration Register

IU_Zeros3–0

7, 6, 5, 4

2, 1

ADDRESS = 0001101 (0x0D)

IU_Zeros3–0

Determines the number of zeros to be stuffed between IUs in a message up to a maximum of 8.

0000 = 0.

11 = 7.

ser bits.

size is configured according to TxBCONF0.

ter user bits when TxBCONF2–1 is 01.

s with Preamble Z as the start of the buffer.

0001 = 1.

…

1000 =

TxBCONF3

Transmitter user bits can be stored in separate buffers or stored together.

0 = User bits are stored together.

1 = User bits are stored separately.

TxBCONF2–1

Configures the transmitter user bit buffer.

00 = Zeros are transmitted for the u

01 = Transmitter user bit buffer

10 = User bits are written to the transmit buffer in IUs specified by the IEC60958-3 standard.

11 = Reserved.

TxBCONF0

Determines the buffer size of the transmit

0 = 384 bits with Preamble Z as the start of the buffer.

1 = 768 bit

Table 29. Channel Status Switch Buffer and Transmitter

Disable_Tx_Copy

RES

TxCSSWITCH

RxCSSWITCH

RES

Tx_A/B_Same

ADDRESS = 0001110 (0x0E)

Tx_A/B_Same

Transmitter Channel Status A and B are the same. The transmitter reads only from the Channel Status A buffer and

s the data into t

place

he Channel Status B buffer.

0 = Channel status for A and B are separate.

nnel status for A and B are the same.

nsmitter channel status buffer to the SPDIF transmitter

0 = Copying transmitter channel status is enabled.

tus is disabled.

channel status buffer.

itter Channel Status A buffer can be accessed at address locations 0x38 through 0x4F.

yte Transmitter Channel Status B buffer can be accessed at address locations 0x38 through 0x4F.

0 = 24-byte Receiver Channel Status A buffer can be accessed at address locations 0x20 through 0x37.

1 = 24-byte Receiver Channel Status B buffer can be accessed at address locations 0x20 through 0x37.

1 = Cha

Disable_Tx_Copy

Disables the copying of the channel status bits from the tra

buffer.

1 = Copying transmitter channel sta

TxCSSWITCH

Toggle switch for the transmit

0 = 24-byte Transm

1 = 24-b

RxCSSWITCH

Toggle switch for the receive channel status buffer.

Table 30. Transmitte

t Significant Byte

r Message Zeros M

ros7–0

MSBZe

7, 6, 5, 4, 3, 2, 1, 0

ADDRESS = 0001111 (0x0F)

MSBZeros7–0

Most significant byte of the number of zeros to be stuffed between IEC60958-3 messages (packets).

Default = 0x00.

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