TXC-04252AIPQ Transwitch Corporation, TXC-04252AIPQ Datasheet - Page 129

• Manufacturer Part Number: TXC-04252AIPQ
• Manufacturer: Transwitch Corporation

Specifications of TXC-04252AIPQ

• Pin Count: 160
• Screening Level: Industrial
• Package Type: PQFP
• Lead Free Status / Rohs Status: Not Compliant

0A4 Port 3
0D4 Port 4
0A5 Port 3
0D5 Port 4
182 Port 1
282 Port 2
382 Port 3
482 Port 4
196 Port 1
296 Port 2
396 Port 3
496 Port 4
044 Port 1
074 Port 2
045 Port 1
075 Port 2
Address
Proprietary TranSwitch Corporation Information for use Solely by its Customers.
7-0
7-0
5-0
Bit
7
6
7
6
5
4
3
2
1
0
Latched Tx
ANAnOOL
Symbol
Counter
Receive
Unused
Unused
TnDAIS
RnFFE
RnFFE
TnLOS
TnLOC
Alarms
TBnFE
TAnFE
Bn TC
Error
Byte
OEI
Bn
V4
B Drop Bus Port n Tandem Connection OEI Counter: An 8-bit counter
which counts the number of OEI errors detected in bit 6 in the N2 (Z6)
byte for the TU/VT selected when the tandem connection feature is
enabled. The counter saturates at full count and is cleared when it is
read.
B Drop Bus Port n Receive V4 Byte: When control bit V4EN is 1, the
eight bits in this register position correspond to the V4 byte received in
the TU/VT selected. Bit 7 corresponds to bit 1 in the V4 byte.
Same alarms as the corresponding address 045, 075, 0A5 and 0D5 bits,
except that these alarm states are latched.
Unused: This bit reads out as 0.
Same alarms as the corresponding address 045, 075, 0A5 and 0D5 bits,
except that these alarm states are latched.
Receive Port n FIFO Error: A 1 indicates that the receive FIFO for port
1 has overflowed or underflowed. The FIFO is reset automatically. Other
than an alarm indication, no action is taken.
Unused: This bit reads out as 0.
PRBS Analyzer Out of Lock: A 1 indicates that the internal PRBS Ana-
lyzer is out of lock.
Transmit A Add Bus Port n FIFO Error: A 1 indicates that the A Add
bus FIFO has overflowed or underflowed. The FIFO is recentered and is
held reset for up to two multiframes automatically. The VT AIS payload
will be transmitted via the add bus when the FIFO error occurs.
Transmit B Add Bus Port n FIFO Error: A 1 indicates that the B Add
bus FIFO has overflowed or underflowed. The FIFO is recentered and is
held reset for up to two multiframes automatically. The VT AIS payload
will be transmitted via the add bus when the FIFO error occurs.
Transmit Port n Loss Of Signal: An alarm occurs when there are no
signal transitions detected on the positive rail or negative rail for a period
of 256 consecutive pulse positions. Recovery occurs when there are at
least 32 transitions counted for 256 consecutive pulse positions. For an
NRZ signal, this alarm is active when a low occurs on the external trans-
mit loss of signal indication lead TLOSn, which is shared with the TNIn
lead.
Transmit Port n Loss Of Clock: A 1 indicates that the transmit clock
(TCIn) for port n has stuck high or low for 6 or more clock cycles. Recov-
ery occurs on the first clock transition.
Transmit Port n AIS Detected: A 1 indicates that line AIS (one or less
zero in 256 bits) has been detected in the bit stream for port n. Recovery
occurs when there are 3 or more zeros in 256 bits. Other than reporting
the alarm, no action is taken.
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DATA SHEET
Description
Ed. 3, December 2000
TXC-04252
TXC-04252-MB
QE1M