TXC-06101AILQ Transwitch Corporation, TXC-06101AILQ Datasheet - Page 158

• Manufacturer Part Number: TXC-06101AILQ
• Manufacturer: Transwitch Corporation

Specifications of TXC-06101AILQ

• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Operating Temperature (max): 85C
• Package Type: PQFP
• Rad Hardened: No
• Lead Free Status / Rohs Status: Not Compliant

Rx B3 Processing
B3 Errors are readable by the µPro at the location Rx B3 Error Count (0D4[H]). Counter overflow is indicated
by RB3COF (SR7; 0F6[H], Bit 7). Their accumulation is identical to B2 accumulation, except that only the SPE
bytes are included in the calculation. The number of received errors (including zero) is made available to the
Transmit Side and to the Ring Port for use as a Path FEBE.
Additional processing is performed to develop an Excess B3 BER Alarm. The threshold is determined by the
following parameters:
The parameter values to be used are given in Table 15. Exceeding the programmed threshold is reported as
B3EBER (SR3; 0E8/9/C[H], Bit 4).
B3MULT(2-0) Control Register 16;
Parameter
B3SCV
B3CCV
Threshold
B3WIN
B3SET
B3CLR
B3M
BER
10
-5
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0FF[H] Bits 2-0
B3WIN
Table 15. B3EBER Parameters For Signal Degradation or Failure
64
Location
Bits 0-3
Bits 4-7
Bits 0-3
06B[H]
06A[H]
06C[H]
06A[H]
069[H]
068[H]
B3M
5
Window equals this number of blocks (see B3M, B3MULT)
Block size in number of SONET frames (125 microseconds each)
Power of 10 that multiplies B3M parameter
Minimum number of blocks with errors > B3SCV in window, B3WIN, to
declare B3 EBER alarm.
Minimum number of errors per block to be considered an errored block.
Minimum number of blocks with errors < B3CCV in window B3WIN, to
declare B3 EBER alarm clear.
The number of errors per block must be less this value to be considered
an error free block (range 1 to N).
B3MULT
1
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DATA SHEET
B3SET
16
Definition
B3SCV
4
B3CLR
29
TXC-06101
B3CCV
Ed. 3, April 2001
TXC-06101-MB
PHAST-1
2