DS21Q42T+ Maxim Integrated Products, DS21Q42T+ Datasheet - Page 43

• Manufacturer Part Number: DS21Q42T+
• Description: IC FRAMER ENHANCED T1 4X 128TQFP
• Manufacturer: Maxim Integrated Products

Specifications of DS21Q42T+

• Controller Type: T1 Framer
• Interface: Parallel/Serial
• Voltage - Supply: 2.97 V ~ 3.63 V
• Current - Supply: 75mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 128-TQFP, 128-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

SR2: STATUS REGISTER 2 (Address=21 Hex)
IMR1: INTERRUPT MASK REGISTER 1 (Address=7F Hex)
(MSB)
LUP
(MSB)
RMF
SYMBOL
SYMBOL
RMTCH
LOTC
RFDL
TFDL
RMF
TMF
LDN
SLIP
RAF
RBL
RYE
SEC
RSC
LUP
(LSB)
LDN
TMF
POSITION
POSITION
LOTC
IMR1.7
IMR1.6
IMR1.5
IMR1.4
IMR1.3
IMR1.2
SR2.7
SR2.6
SR2.5
SR2.4
SR2.3
SR2.2
SR2.1
SR2.0
SEC
SLIP
RFDL
NAME AND DESCRIPTION
Receive Multiframe. Set on receive multiframe boundaries.
Transmit Multiframe. Set on transmit multiframe
boundaries.
One Second Timer. Set on increments of one second based
on RCLK; will be set in increments of 999 ms, 999 ms, and
1002 ms every 3 seconds.
Receive FDL Buffer Full. Set when the receive FDL buffer
(RFDL) fills to capacity (8 bits).
Transmit FDL Buffer Empty. Set when the transmit FDL
buffer (TFDL) empties.
Receive FDL Match Occurrence. Set when the RFDL
matches either RMTCH1 or RMTCH2.
Receive FDL Abort. Set when eight consecutive one’s are
received in the FDL.
Receive Signaling Change. Set when the DS21Q42 detects a
change of state in any of the robbed–bit signaling bits.
NAME AND DESCRIPTION
Loop Up Code Detected.
0 = interrupt masked
1 = interrupt enabled
Loop Down Code Detected.
0 = interrupt masked
1 = interrupt enabled
Loss of Transmit Clock.
0 = interrupt masked
1 = interrupt enabled
Elastic Store Slip Occurrence.
0 = interrupt masked
1 = interrupt enabled
Receive Blue Alarm.
0 = interrupt masked
1 = interrupt enabled
Receive Yellow Alarm.
0 = interrupt masked
1 = interrupt enabled
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RBL
TFDL
RYEL
RMTCH
RCL
RAF
(LSB)
RLOS
(LSB)
RSC