Serial Audio Output Port Data Format (6) - Cirrus Logic Crystal CS8427 Series Preliminary Product Information

7.6 Serial Audio Output Port Data Format (6)

7 6
SOMS SOSF
SOMS - Master/Slave Mode Selector
Default = '0'
0 - Serial audio output port is in slave mode
1 - Serial audio output port is in master mode
SOSF - OSCLK frequency (for master mode)
Default = '0'
0 - 64*Fso
1 - 128*Fso
SORES1:0 - Resolution of the output data on SDOUT and on the AES3 output
Default = '00'
00 - 24 bit resolution
01 - 20 bit resolution
10 - 16 bit resolution
11 - Direct copy of the received NRZ data from the AES3 receiver (including C, U,
V and P bits, SDOUT pin only, serial audio output port clock must be derived from
the AES3 receiver recovered clock)
SOJUST - Justification of SDOUT data relative to OLRCK
Default = '0'
0 - Left-justified
1 - Right-justified (master mode only)
SODEL - Delay of SDOUT data relative to OLRCK, for left-justified data formats
Default = '0'
0 - MSB of SDOUT data occurs in the first OSCLK period after the OLRCK edge
1 - MSB of SDOUT data occurs in the second OSCLK period after the OLRCK edge
SOSPOL - OSCLK clock polarity
Default = '0'
0 - SDOUT transitions occur on falling edges of OSCLK
1 - SDOUT transitions occur on rising edges of OSCLK
SOLRPOL - OLRCK clock polarity
Default = '0'
0 - SDOUT data is for the left channel when OLRCK is high
1 - SDOUT data is for the right channel when OLRCK is high
DS477PP1
5 4
SORES1 SORES0
3 2
SOJUST SODEL
CS8427
1 0
SOSPOL SOLRPOL
31