xrt94l33 Exar Corporation, xrt94l33 Datasheet - Page 221

• Manufacturer Part Number: xrt94l33
• Description: Multi-channel, Multi-function Device Aggregates 3 Ds3/e3/sts-1 Into Oc3/stm-1
• Manufacturer: Exar Corporation

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3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC DATA SHEET
2.2.7.3.2.4
The user can configure the Transmit STS-3c POH Processor block to automatically transmit the RDI-P
indicator, in response to the corresponding Receive STS-3c POH Processor block declaring the LOP-P
condition, by executing the following steps.
STEP 1 – Write the appropriate value into Bits 7 through 5 (LOP-P RDI-P Code[2:0]) within the
“Transmit STS-3c Path – RDI-P Control Register – Byte 0”; as illustrated below.
Transmit STS-3c Path – RDI-P Control Register – Byte 0 (Address = 0x19CB)
By writing this particular value into these three bit-fields, the user is specifying the value that the Transmit
STS-3c POH Processor block will set the RDI-P bit-fields (in the G1 byte, within the “outbound” STS-3c data-
stream) whenever the corresponding Receive STS-3c POH Processor block declares the LOP-P condition.
STEP 2 – Set Bit 4 (Transmit RDI-P upon LOP-P) within the “Transmit STS-3c Path – RDI-P Control
Register – Byte 0” to “1”; as illustrated below.
Transmit STS-3c Path – RDI-P Control Register – Byte 0 (Address = 0x19CB)
This step configures the Transmit STS-3c POH Processor block to automatically transmit the RDI-P indicator
(per the values written into Bits 3 through 1, within this register); anytime the corresponding “Receive STS-3c
POH Processor” block declares the “LOP-P” condition.
2.2.7.3.2.5
The user can configure the Transmit STS-3c POH Processor block to automatically transmit the RDI-P
indicator, in response to the corresponding Receive STS-3c POH Processor declaring the AIS-P condition, by
executing the following steps.
B
B
R/W
R/W
IT
X
IT
X
7
7
LOP-P RDI-P Code[2:0]
LOP-P RDI-P Code[2:0]
P, in response to declaration of the LOP-P Condition
P, in response to declaration of the AIS-P Condition
Configuring the Transmit STS-3c POH Processor block to automatically transmit RDI-
Configuring the Transmit STS-3c POH Processor block to automatically transmit RDI-
B
B
R/W
R/W
IT
IT
X
X
6
6
B
B
R/W
R/W
IT
IT
X
X
5
5
RDI-P upon
RDI-P upon
Transmit
Transmit
LOP-P
LOP-P
B
B
R/W
R/W
IT
IT
0
1
4
4
221
B
B
R/W
R/W
IT
IT
0
0
3
3
AIS-P RDI-P Code[2:0]
AIS-P RDI-P Code[2:0]
B
B
R/W
R/W
IT
IT
0
0
2
2
B
B
R/W
R/W
IT
IT
0
0
1
1
XRT94L33
RDI-P upon
RDI-P upon
Transmit
Transmit
AIS-P
AIS-P
Rev.1.2.0.
B
B
R/W
R/W
IT
IT
0
0
0
0