
PRELIMINARY
XRT86SH221
306
REV. P1.0.5
SDH-TO-PDH FRAMER/MAPPER WITH INTEGRATED 21-CHANNEL E1 SH LIU
BIT 7 - RFI-V upon 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 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 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 E1 Framer block declares the RAI defect condition.
BIT 6 - Reserved
BIT 5 - Reserved:
BIT [4:2] - Transmit 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 0 (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 0 (RDI-V) within the V5 byte,
and Bits 3, 2 and 1 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 - E1 Drop Control Register - Byte
2.
T
ABLE
271: C
HANNEL
C
ONTROL
- VT-M
APPER
T
RANSMIT
RDI-V C
ONTROL
R
EGISTER
0 (VTMRDICR0 = 0
X
ND87)
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
E1 RAI
Enable
Reserved
Reserved
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