XRT79L71 Datasheet, PDF (232/441 Pages) Exar Corporation – 1 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC

XRT79L71
REV. P1.0.3
PRELIMINARY
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1 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
BIT NUMBER
NAME
7-0
TxTTB_Byte_14[7:0]
TYPE
R/W
DESCRIPTION
Transmit TTB (Trail-Trace Buffer) Byte 14:
These READ/WRITE bits permit the user to specify the contents
of "Trail-Trace Buffer Byte 14" within the outbound E3 data
stream.
TXE3 TTB-15 REGISTER - G.832 (DIRECT ADDRESS = 0X1147)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
TxTTB_Byte_15
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
BIT 2
R/W
0
BIT 1
R/W
0
BIT 0
R/W
0
BIT NUMBER
NAME
7-0
TxTTB_Byte_15[7:0]
TYPE
R/W
DESCRIPTION
Transmit TTB (Trail-Trace Buffer) Byte 15:
These READ/WRITE bits permit the user to specify the contents
of "Trail-Trace Buffer Byte 15" within the outbound E3 data
stream.
TXE3 FA1 ERROR MASK REGISTER - G.832 (DIRECT ADDRESS = 0X1148)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
TxFA1_Mask_Byte[7:0]
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
BIT 1
R/W
0
BIT 0
R/W
0
BIT NUMBER
NAME
7-0
TxFA1_Mask_Byte[7:0]
TYPE
R/W
DESCRIPTION
TxFA1 Error Mask Byte[7:0]:
These READ/WRITE bit-fields permit the user to insert bit errors
into the FA1 bytes, within the outbound E3 data stream.
The Frame Generator will perform an XOR operation with the
contents of the FA1 byte, and this register. The results of this
calculation will be inserted into the FA1 byte position within the
"outbound" E3 data stream. For each bit-field (within this regis-
ter) that is set to "1", the corresponding bit, within the FA1 byte
will be in error.
NOTE: For normal operation, the user should set this register to
0x00.
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