XRT94L33IB-L Exar Corporation, XRT94L33IB-L Datasheet - Page 350

• Manufacturer Part Number: XRT94L33IB-L
• Description: IC MAPPER DS3/E3/STS-1 504TBGA
• Manufacturer: Exar Corporation

Specifications of XRT94L33IB-L

• Applications: Network Switches
• Interface: Bus
• Voltage - Supply: 3.14 V ~ 3.47 V
• Package / Case: 504-LBGA
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

XRT94L33
Rev.1.2.0.
• It will generate the “Change of AIS-L Defect Condition” Interrupt, by toggling the “INT*” output pin “LOW”,
and by setting Bit 1 (Change of AIS-L Defect Condition Interrupt Status) within the “Receive STS-3 Transport
Interrupt Status Register – Byte 2” to “1”, as illustrated below.
Receive STS-3 Transport Interrupt Status Register – Byte 2 (Address = 0x1109)
2.3.1.4.2
The Receive STS-3 TOH Processor block will clear the AIS-L defect once it has received at least 5
consecutive STS-3 frames, in which bits 6, 7 and 8 (of the K2 byte) are set to some value other than “1, 1, 1”.
Once the Receive STS-3 TOH Processor block clears the AIS-L defect, it will notify the system of this fact by
doing the following.
• It will set Bit 0 (AIS-L Defect Declared) within the Receive STS-3 Transport Status Register – Byte 1” to “0”
as illustrated below.
Receive STS-3 Transport Status Register – Byte 1 (Address = 0x1106)
• It will generate the “Change of AIS-L Defect Condition” Interrupt by toggling the “INT*” output pin “LOW”,
and by setting Bit 1 (Change of AIS-L Defect Condition Interrupt Status), within the Receive STS-3 Transport
Interrupt Status Register – Byte 2” to “1”, as illustrated below.
Receive STS-3 Transport Interrupt Status Register – Byte 2 (Address = 0x1109)
B
B
B
R/O
R/O
R/O
R/O
IT
IT
IT
0
0
0
7
7
7
How the Receive STS-3 TOH Processor Block Clears the AIS-L Defect Condition
B
B
B
R/O
R/O
R/O
R/O
IT
IT
IT
0
0
0
6
6
6
Unused
B
B
B
R/O
R/O
R/O
R/O
IT
IT
IT
0
0
0
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC DATA SHEET
5
5
5
Unused
Unused
B
B
B
R/O
R/O
R/O
R/O
IT
IT
IT
0
0
0
4
4
4
350
B
B
B
R/O
R/O
R/O
R/O
IT
IT
IT
0
0
0
3
3
3
Mismatch
Message
Declared
Section
Defect
Trace
B
B
B
R/O
R/O
R/O
R/O
IT
IT
IT
0
0
0
2
2
2
AIS-L Defect
AIS-L Defect
Change of
Change of
Condition
Condition
Message
Unstable
Declared
Interrupt
Interrupt
Section
Status
Defect
Status
Trace
B
RUR
B
B
RUR
R/O
R/O
IT
IT
IT
0
1
0
1
1
1
xr
Change of
Change of
Condition
Condition
Declared
Interrupt
Interrupt
Defect
Defect
Defect
Status
Status
AIS_L
RDI-L
RDI-L
B
RUR
B
B
RUR
R/O
R/O
IT
IT
IT
1
0
0
0
0
0