XRT79L71 Datasheet, PDF (361/441 Pages) Exar Corporation – 1 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC

áç
PRELIMINARY
1 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
XRT79L71
REV. P1.0.3
BIT NUMBER
NAME
0
Scrambler Enable
TYPE
DESCRIPTION
Cell Payload Scrambler Enable:
This READ/WRITE bit-field permits the user to either enable or dis-
able the "Cell Payload Scrambler". If the user enables the "Cell Pay-
load Scrambler" then the Transmit ATM Cell Processor will payload
self-synchronous scrambling on all cell payloads bytes (within each
outbound ATM cell) with the x^43+1 polynomial.
0 - Disables the Cell Payload Scrambler
1 - Enables the Cell Payload Scrambler
TRANSMIT ATM CELL PROCESSOR BLOCK - TRANSMIT ATM STATUS REGISTER (ADDRESS =
0X1F07)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Unused
One Shot DONE
R/O
R/O
R/O
R/O
R/O
R/O
R/O
R/O
0
0
0
0
0
0
0
0
BIT NUMBER
NAME
7-1
Unused
0
One Shot DONE
TYPE
DESCRIPTION
R/O
R/O One Shot DONE:
This READ-ONLY bit-field indicates whether or not the Test Cell
Transmitter has completed its transmission of 1024 test cells, follow-
ing the instant that the user has commanded the Test Cell to transmit
this burst of 1024 cells.
0 - Indicates that the Test Cell Transmitter has NOT completed its
transmission of 1024 test cells.
1 - Indicates that the Test Cell Transmitter has completed its trans-
mission of 1024 test cells since the last "Transmit Test Cell - One
Shot" command.
NOTES:
1. This bit-field is only valid if (1) the Test Cell Transmitter is
active and (2) if the Test Cell Transmitter has been
configured to operate in the "One-Shot" Mode.
2. Once this bit-field has been set to "1", it will remain at "1"
until the user executes another "Transmit Test Cell - One
Shot" command.
349