DS21FF44 Maxim Integrated Products, DS21FF44 Datasheet - Page 48
DS21FF44
Manufacturer Part Number
DS21FF44
Description
IC FRAMER E1 4X4 16CH 300-BGA
Manufacturer
Maxim Integrated Products
Datasheet
1.DS21FT44N.pdf
(117 pages)
Specifications of DS21FF44
Controller Type
E1 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
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SR2: STATUS REGISTER 2 (Address = 07 Hex)
(MSB)
RMF
SYMBOL
RCMF
TSLIP
LOTC
RMF
TMF
RAF
SEC
TAF
RAF
POSITION
SR2.1
SR2.7
SR2.6
SR2.5
SR2.4
SR2.3
SR2.2
SR2.0
TMF
Receive CAS Multiframe. Set every 2ms (regardless if CAS
signaling is enabled or not) on receive multiframe boundaries.
Used to alert the host that signaling data is available.
Receive Align Frame. Set every 250µs at the beginning of
align frames. Used to alert the host that Si and Sa bits are
available in the RAF and RNAF registers.
Transmit Multiframe. Set every 2ms (regardless if CRC4 is
enabled) on transmit multiframe boundaries. Used to alert the
host that signaling data needs to be updated.
One Second Timer. Set on increments of one second based on
RCLK. If CCR2.7 = 1, then this bit will be set every 62.5ms
instead of once a second.
Transmit Align Frame. Set every 250µs at the beginning of
align frames. Used to alert the host that the TAF and TNAF
registers need to be updated.
Loss of Transmit Clock. Set when the TCLK pin has not
transitioned for one channel time (or 3.9µs). Will force the
LOTC pin high if enabled by TCR2.0.
Receive CRC4 Multiframe. Set on CRC4 multiframe
boundaries; will continue to be set every 2ms on an arbitrary
boundary if CRC4 is disabled.
Transmit Elastic Store Slip. Set when the elastic store has
either repeated or deleted a frame of data.
SEC
48 of 117
TAF
NAME AND DESCRIPTION
LOTC
RCMF
TSLIP
(LSB)
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