DS21FF42 Maxim Integrated Products, DS21FF42 Datasheet - Page 48

• Manufacturer Part Number: DS21FF42
• Description: IC FRAMER T1 4X4 16CH 300-BGA
• Manufacturer: Maxim Integrated Products

Specifications of DS21FF42

• Controller Type: T1 Framer
• Interface: Parallel/Serial
• Voltage - Supply: 2.97 V ~ 3.63 V
• Current - Supply: 300mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 300-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

IMR2: INTERRUPT MASK REGISTER 2 (Address=6F Hex)
11.
There are a set of three counters in each framer that record bipolar violations, excessive zeros, errors in
the CRC6 code words, framing bit errors, and number of multiframes that the device is out of receive
synchronization. Each of these three counters are automatically updated on either one second boundaries
(CCR3.2=0) or every 42 ms (CCR3.2=1) as determined by the timer in Status Register 2 (SR2.5). Hence,
these registers contain performance data from either the previous second or the previous 42 ms. The user
can use the interrupt from the one second timer to determine when to read these registers. The user has a
full second (or 42 ms) to read the counters before the data is lost. All three counters will saturate at their
(MSB)
RMF
SYMBOL
SYMBOL
RMTCH
RLOS
RFDL
TFDL
RMF
TMF
ERROR COUNT REGISTERS
RCL
RAF
RSC
SEC
TMF
POSITION
POSITION
IMR1.1
IMR1.0
IMR2.7
IMR2.6
IMR2.5
IMR2.4
IMR2.3
IMR2.2
IMR2.1
IMR2.0
SEC
NAME AND DESCRIPTION
NAME AND DESCRIPTION
Receive Carrier Loss.
0 = interrupt masked
1 = interrupt enabled
Receive Loss of Sync.
0 = interrupt masked
1 = interrupt enabled
Receive Multiframe.
0 = interrupt masked
1 = interrupt enabled
Transmit Multiframe.
0 = interrupt masked
1 = interrupt enabled
One Second Timer.
0 = interrupt masked
1 = interrupt enabled
Receive FDL Buffer Full.
0 = interrupt masked
1 = interrupt enabled
Transmit FDL Buffer Empty.
0 = interrupt masked
1 = interrupt enabled
Receive FDL Match Occurrence.
0 = interrupt masked
1 = interrupt enabled
Receive FDL Abort.
0 = interrupt masked
1 = interrupt enabled
Receive Signaling Change.
0 = interrupt masked
1 = interrupt enabled
RFDL
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TFDL
RMTCH
RAF
(LSB)
RSC