
XRT86SH328
PRELIMINARY
214
28-CHANNEL DS1/E1 FRAMER/LIU WITH DS3 MUX & VT-MAPPER - SONET APPLICATIONS
REV. P1.0.6
This READ/WRITE bit-field is used to configure the Transmit DS3 Framer block to transmit DS3 frames with a
single/particular erred F-bit.
This particular F-bit corresponds with the 26th F-bit within a given outbound DS3 frame. The Transmit DS3 Framer
block will perform an XOR operation with the contents of this bit-field and the value of the 26th F-bit. The results of this
calculation will be written back into the 26th F-bit position, within each outbound DS3 frame.
N
OTE
:
The user should set this bit-field to 0 for normal (e.g., un-erred) operation.
BIT 0 - F-Bit Mask[24]:
This READ/WRITE bit-field is used to configure the Transmit DS3 Framer block to transmit DS3 frames with a
single/particular erred F-bit.
This particular F-bit corresponds with the 25th F-bit within a given outbound DS3 frame. The Transmit DS3 Framer
block will perform an XOR operation with the contents of this bit-field and the value of the 25th F-bit. The results of this
calculation will be written back into the 25th F-bit position, within each outbound DS3 frame.
N
OTE
:
The user should set this bit-field to 0 for normal (e.g., un-erred) operation.
BIT7 - F-Bit Mask[23]:
This READ/WRITE bit-field is used to configure the Transmit DS3 Framer block to transmit DS3 frames with a
single/particular erred F-bit.
This particular F-bit corresponds with the 24th F-bit within a given outbound DS3 frame. The Transmit DS3 Framer
block will perform an XOR operation with the contents of this bit-field and the value of the 24th F-bit. The results of this
calculation will be written back into the 24th F-bit position, within each outbound DS3 frame.
N
OTE
:
The user should set this bit-field to 0 for normal (e.g., un-erred) operation.
BIT6 - F-Bit Mask[22]:
This READ/WRITE bit-field is used to configure the Transmit DS3 Framer block to transmit DS3 frames with a
single/particular erred F-bit.
This particular F-bit corresponds with the 23rd F-bit within a given outbound DS3 frame. The Transmit DS3 Framer
block will perform an XOR operation with the contents of this bit-field and the value of the 23rd F-bit. The results of this
calculation will be written back into the 23rd F-bit position, within each outbound DS3 frame.
N
OTE
:
The user should set this bit-field to 0 for normal (e.g., un-erred) operation.
BIT 5 - F-Bit Mask[21]:
This READ/WRITE bit-field is used to configure the Transmit DS3 Framer block to transmit DS3 frames with a
single/particular erred F-bit.
This particular F-bit corresponds with the 22nd F-bit within a given outbound DS3 frame. The Transmit DS3 Framer
block will perform an XOR operation with the contents of this bit-field and the value of the 22nd F-bit. The results of this
calculation will be written back into the 22nd F-bit position, within each outbound DS3 frame.
N
OTE
:
The user should set this bit-field to 0 for normal (e.g., un-erred) operation.
BIT 4 - F-Bit Mask[20]:
This READ/WRITE bit-field is used to configure the Transmit DS3 Framer block to transmit DS3 frames with a
single/particular erred F-bit.
This particular F-bit corresponds with the 21st F-bit within a given outbound DS3 frame. The Transmit DS3 Framer
block will perform an XOR operation with the contents of this bit-field and the value of the 21st F-bit. The results of this
calculation will be written back into the 21st F-bit position, within each outbound DS3 frame.
N
OTE
:
The user should set this bit-field to 0 for normal (e.g., un-erred) operation.
BIT 3 - F-Bit Mask[19]:
T
ABLE
286: DS3 F
RAMER
B
LOCK
- T
RANSMIT
DS3 F-B
IT
M
ASK
R
EGISTER
# 2 (A
DDRESS
= 0
X
0E37)
BIT7
BIT6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
F-Bit
Mask[23]
F-Bit
Mask[22]
F-Bit
Mask[21]
F-Bit
Mask[20]
F-Bit
Mask[19]
F-Bit
Mask[18]
F-Bit
Mask[17]
F-Bit
Mask[16]
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0