adav802 Analog Devices, Inc., adav802 Datasheet - Page 33

• Manufacturer Part Number: adav802
• Description: Audio Codec For Recordable Dvd
• Manufacturer: Analog Devices, Inc.

Preliminary Technical Data
Table 36. Transmitter Control Register
ADDRESS = 0001100
TxVALIDITY
TxRATIO2-0
TxCLKSEL1-0
TxENABLE
Table 37. Transmitter Buffer Configuration Register
ADDRESS = 0001101
IU_Zeros3-0
TxBCONF3
TxBCONF2-1
TxBCONF0
This bit is used to set or clear the VALIDITY bit in the AES3/SPDIF Transmit stream
0 = Audio is suitable for D/A conversion
1 = Audio is not suitable for D/A conversion
Determines the AES3/SPDIF Transmit to AES3/SPDIF Receiver ratio
000 = Transmitter to Receiver Ratio is 1:1
001 = Transmitter to Receiver Ratio is 1:2
010 = Transmitter to Receiver Ratio is 1:4
101 = Transmitter to Receiver Ratio is 2:1
110 = Transmitter to Receiver Ratio is 4:1
Selects the clock source for the AES3/SPDIF Transmitter
00 = Internal Clock 1 is the clock source for the Transmitter
01 = Internal Clock 2 is the clock source for the Transmitter
10 = The recovered PLL clock is the clock source for the Transmitter
11 = Reserved
Enables the AES3/SPDIF Transmitter
0 = The AES3/SPDIF Transmitter is disabled
1 = The AES3/SPDIF Transmitter is enabled
RES
7
IU_Zeros3-0
7,6,5,4
Determines the number of zeros to be stuffed between IUs in a message up to a
maximum of 8
0000 = 0
0001 = 1
......
0111 = 7
1000 = 8
The Transmitter User Bits can be stored in separate buffers or stored together
0 = The User Bits are stored together
1 = The User Bits are stored seperately
Configures the Transmitter User Bit Buffer.
00 = Zeros are transmitted for the User Bits
01 = The transmitter User Bit buffer size is configured according to TxBCONF0
10 = Write the User Bits to the transmit buffer in IUs specified by the IEC60958-3
standard
11 = Reserved
Determines the buffer size of the transmitter user bits when TxBCONF2-1 is 01
0 = 384 Bits with Preamble-Z as the start of the buffer
1 = 768 Bits with Preamble-Z as the start of the buffer
Tx-VALIDITY
6
TxBCONF3
3
Rev. Pr G | Page 33 of 53
Tx-RATIO2-0
5,4,3
TxBCONF2-1
2,1
TxCLK SEL1-0
2,1
TxBCONF0
0
Tx-ENABLE
0
ADAV802