
XRT86SH328
PRELIMINARY
328
28-CHANNEL DS1/E1 FRAMER/LIU WITH DS3 MUX & VT-MAPPER - SONET APPLICATIONS
REV. P1.0.6
Bit 7 - RFI-V upon DS1/E1 RAI Enable:
This READ/WRITE bit-field permits the user to configure the VT-Mapper block to automatically transmit the RFI-V
indicator (within the outbound VT-data-stream) whenever (and for the duration) that the corresponding Ingress Direction
Receive DS1/E1 Framer block declares the RAI defect condition.
`
0 - Does not configure the VT-Mapper block to automatically transmit the RFI-V indicator whenever (and for the
duration) that the corresponding Ingress Direction Receive DS1/E1 Framer block declares the RAI defect condition.
`
1 - Configures the VT-Mapper block to automatically transmit the RFI-V indicator whenever (and for the duration) that
the corresponding Ingress Direction Receive DS1/E1 Framer block declares the RAI defect condition.
Bits 6 - 5 - Unused:
Bits 4 - 2 - Transit RDI-V Value[2:0]:
These three READ/WRITE bit-fields permits the user to specify the value that the VT-Mapper block will transmit, within
the RDI-V bit-fields of the K4 byte (within each outbound VT-frame) regardless of any defects that the corresponding
VT-De-Mapper block is (or is NOT) currently declaring.
N
OTE
:
The user MUST set bit 0 (RDI-V Insert Type) within this register to "1" in order to configure the VT-Mapper block to
use these bit-fields as the "source" of the RDI-V value.
Bit 1 - RDI-V Type
This READ/WRITE bit-field permits the user to configure the VT-Mapper block to either support the "SRDI-V" (Single-
Bit - RDI-V) or "ERDI-V" (Extended - RDI-V) form of signaling. If the user opts to use only "Single-Bit" RDI-V, then the
RDI-V indicator will only be transported via Bit 8 (RDI-V) within the V5 byte in a VT-data-stream. Conversely, if the user
opts to use the "Extended" RDI-V, then the RDI-V indicator will be transported via both Bit 8 (RDI-V) within the V5 byte,
and Bits 5, 6 and 7 within the Z7/K4 byte.
`
0 - Configures the VT Mapper block to use the SRDI-V form of signaling.
`
1 - Configures the VT-Mapper block to use the ERDI-V form of signaling.
N
OTE
:
This configuration setting only applies to the VT-Mapper block. If the user wishes to configure the VT-De-Mappe
block to support either the "SRDI-V" or the "ERDI-V" form of signaling, then he/she must set Bit 0 (RDI-V Type)
within the "Channel Control - VT-De-Mapper Block - Egress Direction - DS1/E1 Drop Control Register - Byte 2.
Bit 0 - RDI-V Insert Type:
This READ/WRITE bit-field permits the user to select the source of the RDI-V code word that the VT-Mapper block will
transmit within the outbound VT-data-stream, as depicted below. In this case, the user has two options.
To configure the VT-Mapper block to transmit the appropriate RDI-V code (based upon defects that the
corresponding VT-De-Mapper block declares). In this case, the VT-Mapper block will transmit the RDI-V codes, as
configured in the "Channel Control - VT Mapper Block - Ingress Direction - Transmit RDI-V Control Register - Bytes 3
- 1" registers.
To configure the VT-Mapper block to use the value written into the "Transmit RDI-V Value[2:0]" bit-fields within this
register.
`
0 - Configures the VT-Mapper block to transmit the appropriate RDI-V code (based upon defects that the
corresponding VT-De-Mapper block declares).
`
1 - Configures the VT-Mapper block to use the value written into the "Transmit RDI-V Value[2:0]" bit-fields within this
register.
T
ABLE
467: C
HANNEL
C
ONTROL
- VT-M
APPER
B
LOCK
- I
NGRESS
D
IRECTION
- T
RANSMIT
RDI-V C
ONTROL
R
EGISTER
- B
YTE
0 (A
DDRESS
= 0
X
ND87,
WHERE
N
RANGES
IN
VALUE
FROM
0
X
01
TO
0
X
1C)
B
IT
7
B
IT
6
B
IT
5
B
IT
4
B
IT
3
B
IT
2
B
IT
1
B
IT
0
RFI-V upon
DS1/E1 RAI
Enable
Unused
Transmit RDI-V Value[2:0]
RDI-V Type
RDI-V Insert
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
1
0
1
0
1
0
1
0