DS21Q43AT Maxim Integrated Products, DS21Q43AT Datasheet - Page 28

• Manufacturer Part Number: DS21Q43AT
• Description: IC FRAMER E1 QUAD 5V IND 128TQFP
• Manufacturer: Maxim Integrated Products

Specifications of DS21Q43AT

• Controller Type: E1 Framer
• Interface: Parallel/Serial
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 32mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 128-TQFP, 128-VQFP
• Dc: 0319
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

IMR2: INTERRUPT MASK REGISTER 2 (Address=17 Hex)
5.0 ERROR COUNT REGISTERS
There are a set of four counters in the DS21Q43A that record bipolar or code violations, errors in the
CRC4 SMF code words, E-bits as reported by the far end, and word errors in the FAS. Each of these four
counters are automatically updated on either 1-second boundaries (CCR2.7=0) or every 62.5 ms
(CCR2.7=1) as determined by the timer in Status Register 2 (SR2.4). Hence, these registers contain
performance data from either the previous second or the previous 100 ms. The user can use the interrupt
from the timer to determine when to read these registers. The user has a full second (or 62.5 ms) to read
the counters before the data is lost.
(MSB)
RMF
SYMBOL
RCMF
TSLIP
LOTC
RMF
TMF
RAF
SEC
TAF
RAF
POSITION
IMR2.7
IMR2.6
IMR2.5
IMR2.4
IMR2.3
IMR2.2
IMR2.1
IMR2.0
TMF
NAME AND DESCRIPTION
Receive CAS Multiframe.
0=interrupt masked
1=interrupt enabled
Receive Align Frame.
0=interrupt masked
1=interrupt enabled
Transmit Multiframe.
0=interrupt masked
1=interrupt enabled
1-Second Timer.
0=interrupt masked
1=interrupt enabled
Transmit Align Frame.
0=interrupt masked
1=interrupt enabled
Loss Of Transmit Clock.
0=interrupt masked
1=interrupt enabled
Receive CRC4 Multiframe.
0=interrupt masked
1=interrupt enabled
Transmit Side Elastic Store Slip.
0=interrupt masked
1=interrupt enabled
SEC
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TAF
LOTC
RCMF
TSLIP
DS21Q43A
(LSB)