
XRT86SH328
PRELIMINARY
210
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 either enable or disable the Transmit FEAC Interrupt. If the user enables this
interrupt, then the Transmit FEAC Controller block (within the Transmit DS3 Framer block) will generate an interrupt,
once it has completed its 10th transmission of a given FEAC Message to the remote terminal equipment.
`
0 - Disables the Transmit FEAC Interrupt
`
1 - Enables the Transmit FEAC Interrupt.
N
OTE
:
This bit-field is only active if the Transmit and Receive DS3 Framer blocks have been configured to support the
C-bit Parity Framing format.
BIT 3 - Transmit FEAC Interrupt Status:
This RESET-upon-READ bit-field indicates whether or not the Transmit FEAC Controller block has generated the
Transmit FEAC interrupt since the last read of this register.
`
0 - Indicates that the Transmit FEAC Interrupt has NOT occurred since the last read of this register.
`
1 - Indicates that the Transmit FEAC Interrupt has occurred since the last read of this register.
BIT 2 - Transmit FEAC Controller Enable:
This READ/WRITE bit-field is used to either enable or disable the Transmit FEAC Controller, within the
Transmit DS3 Framer block.
`
0 - Disables the Transmit FEAC Controller block.
`
1 - Enables the Transmit FEAC Controller block
BIT 1 - Transmit FEAC Message:
`
A 0 to 1 transition, within this bit-field configures the Transmit FEAC Controller block to begin its transmission of the
FEAC Message (which consists of the FEAC Code, as specified within the Transmit DS3 FEAC Register.
N
OTE
:
The user is advised to perform a write operation that resets this bit-field back to 0, following execution of the
command to transmit a FEAC Message.
BIT 0 - Transmit FEAC Busy:
This READ-ONLY bit-field indicates whether or not the Transmit FEAC Controller block is currently busy transmitting a
FEAC Message to the remote terminal.
`
0 - Indicates that the Transmit FEAC Controller is NOT currently busy transmitting a given FEAC Message.
`
1 - Indicates that the Transmit FEAC Controller is currently busy transmitting a given FEAC Message to the remote
terminal equipment.
BIT 7 - Unused:
BIT [6:1] - TxFEAC_Code[5:0]:
These six (6) READ/WRITE bit-fields permit the user to specify the FEAC Code word that the Transmit FEAC Controller
block (within the Transmit DS3 Framer block) should transmit to the remote terminal equipment.
Once the user enables the Transmit FEAC Controller and commands it to begin its transmission, the Transmit FEAC
Controller will then (1) encapsulate this six-bit code word into a 16-bit structure, and (2) proceed to transmit this 16-bit
structure 10 times, repeatedly, and then halt.
N
OTE
:
These bit-fields are ignored if the user does not enable and use the Transmit FEAC Controller.
BIT 0 - Unused:
T
ABLE
281: DS3 F
RAMER
B
LOCK
- T
RANSMIT
DS3 FEAC R
EGISTER
(A
DDRESS
= 0
X
0E32)
B
IT
7
B
IT
6
B
IT
5
B
IT
4
B
IT
3
B
IT
2
B
IT
1
B
IT
0
Unused
TxFEAC_Code[5:0]
Unused
R/O
R/W
R/W
R/W
R/W
R/W
R/W
R/O
0
1
1
1
1
1
1
0