User Data Buffer Control (19) - Cirrus Logic Crystal CS8427 Series Preliminary Product Information

7.17 User Data Buffer Control (19)

7 6
0 0
UD - User data pin (U) direction specifier
Default = '0'
0 - The U pin is an input. The U data is latched in on both rising and falling edges of
OLRCK. This setting also chooses the U pin as the source for transmitted U data.
1 - The U pin is an output. The received U data is clocked out on both rising and falling edges
of ILRCK. This setting also chooses the U data buffer as the source of transmitted U data.
UBM1:0 - Sets the operating mode of the AES3 U bit manager
Default = '00'
00 - Transmit all zeros mode
01 - Block mode
10 - Reserved
11 - Reserved
DETUI - D to E U-data buffer transfer inhibit bit (valid in block mode only).
Default = '0'
0 - Allow U-data D to E buffer transfers
1 - Inhibit U-data D to E buffer transfers
EFTUI - E to F U-data buffer transfer inhibit bit (valid in block mode only).
Default = '0'
0 - Allow U-data E to F buffer transfers
1 - Inhibit U-data E to F buffer transfer
DS477PP1
5 4
0 UD
3 2
UBM1 UBM0
CS8427
1 0
DETUI EFTUI
37