
XRT86SH221
PRELIMINARY
253
SDH-TO-PDH FRAMER/MAPPER WITH INTEGRATED 21-CHANNEL E1 SH LIU
REV. P1.0.5
BIT 7 - Transmit RFI-V Value:
This READ/WRITE bit-field is used to exercise Software Control over the state of the RFI-V bit-field (within each V5
byte) of the outbound VT data-stream. If the user sets BIT 1 (Auto Transmit RFI-V Indicator), within the VT-Mapper
Block - Ingress Direction - E1 Insertion Control Register - 2 to 0, then the Transmit VT-Mapper block will read out the
contents within this bit-field, and it will load this value into the RFI-V bit-field within each V5 byte of the outbound VT-
data-stream.
N
OTE
:
This bit-field is ignored if the user sets Bit 1 (Auto Transmit RFI-V Indicator), within the VT Mapper Block -
Ingress Direction - E1 Insertion Control Register - 1 to 1.
BIT 6 - Transmit RDI-V Value:
This READ/WRITE bit-field is used to exercise Software Control over the state of the RDI-V bit-field (within each V5
byte) of the outbound VT data-stream. If the user sets BIT 0 (Auto Transmit RDI-V Indicator), within the VT-Mapper
Block - Ingress Direction - E1 Insertion Control Register - 2 to 0, then the Transmit VT-Mapper block will read out the
contents within this bit-field, and it will load this value into the RDI-V bit-field within each V5 byte of the outbound VT-
data-stream.
N
OTE
:
This bit-field is ignored if the user sets Bit 0 (Auto Transmit RDI-V Indicator), within the VT Mapper Block -
Ingress Direction - E1 Insertion Control Register - 1 to 1.
BIT 5 - Transmit AIS-V Indicator
This READ/WRITE bit-field is used to command the Transmit VT-Mappper block to transmit the AIS-V indicator (within
the corresponding VT2) within the outbound VT-data-stream.
0 - Configures the Transmit VT-Mapper block to NOT transmit the AIS-V indicator within the outbound VT-data-stream.
1 - Configures the Transmit VT-Mapper block to transmit the AIS-V indicator within the outbound VT-data-stream.
BIT [4:0] - E1 (Cross-Connect) Channel Select[4:0]:
These READ/WRITE bit-fields is used to configure the Internal VT-Cross Connect. More specifically, these READ/
WRITE bit-fields are used to select which (of the 21 Ingress Direction) E1 signals to be mapped into either a VT2 by
this particular Transmit VT-Mapper block. The following table presents the relationship between the settings of these
bit-fields and the resulting Cross Connect Configuration.
T
ABLE
229: C
HANNEL
C
ONTROL
- VT-M
APPER
E1 I
NSERTION
C
ONTROL
R
EGISTER
0 (VTME1ICR0 = 0
X
ND43)
BIT7
BIT6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Transmit
RFI-V Value
Transmit
RDI-V Value
Transmit AIS-V
Indicator
E1 Cross Connect Channel Select_Ingress Direction[4:0]
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
Cross Connect Configuration
E1 (C
ROSS
-C
ONNECT
)
C
HANNEL
S
ELECT
[4:0]
R
ESULTING
I
NGRESS
D
IRECTION
E1
C
HANNEL
BEING
HANDLED
BY
THIS
PARTICULAR
T
RANSMIT
VT-M
APPER
BLOCK
C
OMMENTS
00000
Unequipped
This particular VT will be transmitted as an
Un-equipped signal
00001
Ingress Direction E1 Channel 1
00010
Ingress Direction E1 Channel 2
00011
Ingress Direction E1 Channel 3
00100
Reserved
00101
Ingress Direction E1 Channel 4
00110
Ingress Direction E1 Channel 5