DS21FT42 Maxim Integrated Products, DS21FT42 Datasheet - Page 47

• Manufacturer Part Number: DS21FT42
• Description: IC FRAMER T1 4X3 12CH 300-BGA
• Manufacturer: Maxim Integrated Products

Specifications of DS21FT42

• Controller Type: T1 Framer
• Interface: Parallel/Serial
• Voltage - Supply: 2.97 V ~ 3.63 V
• Current - Supply: 225mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 300-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

SR2: STATUS REGISTER 2 (Address=21 Hex)
IMR1: INTERRUPT MASK REGISTER 1 (Address=7F Hex)
(MSB)
(MSB)
RMF
LUP
SYMBOL
SYMBOL
RMTCH
RFDL
LOTC
TFDL
RMF
TMF
LDN
SLIP
RYE
RAF
RSC
LUP
RBL
SEC
LDN
TMF
POSITION
POSITION
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
LOTC
SEC
NAME AND DESCRIPTION
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.
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
RFDL
SLIP
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TFDL
RBL
RMTCH
RYEL
RCL
RAF
(LSB)
(LSB)
RLOS
RSC