CS8406

DS580F1

29

8.13

User Data Buffer Control (13h)

UD - User bit data source specifier

Default = ‘0’

0 - U Pin is the source of transmitted U data

1 - U data buffer is the source of transmitted U data

UBM1:0 - Sets the operating mode of the AES3 User bit manager

Default = ‘00’

00 - Transmit all zeros mode

01 - Block mode

10 - Reserved

11 - Reserved

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 transfers

8.14

Channel Status bit or User bit Data Buffer (20h - 37h)

Either the channel status data buffer E or the separate user bit data buffer E (provided UBM bits are set to block

mode) is accessible through these register addresses.

8.15

CS8406 I.D. and Version Register (7Fh) (Read Only)

ID[3:0] - ID code for the CS8406. Permanently set to 1110

VER[3:0] = 0001 (revision A)

VER[3:0] = 0010 (revision B)

7

6

5

43210

0

0

0

UD

UBM1

UBM0

0

EFTUI

7

6

5

43210

ID3

ID2

ID1

ID0

VER3

VER2

VER1

VER0