78P2342JAT
2-port E3/DS3/STS-1 LIU
with Jitter Attenuator
ELECTRICAL SPECIFICATIONS (continued)
TRANSMIT MONITOR
The transmit monitor function looks at the signals on the LOUTPx and LOUTNx pins and checks for the
existence of a valid signal. The monitor detects the peak of the transmitted signal at the LOUTPx and LOUTNx
pins and checks that it is between VUNDER and VOVER at all times. If the peak level is within the voltage threshold
window, the TXNW signal is low. If the peak level falls outside of the threshold limits for more than
approximately 32 bit times, the TXNW signal goes high.
VTPOS - VTNEG
VOVER
VPEAK
VUNDER
Time
PARAMETER
CONDITION
DS3 mode with LBOx=1
STS-1 mode
MIN
TYP
MAX
UNIT
VUNDER
320
mVpk
E3 mode
VUNDER
VOVER
VOVER
400
1280
1600
mVpk
mVpk
mVpk
DS3 mode with LBOx=0
DS3 mode with LBOx=1
STS-1 mode
E3 mode
DS3 mode with LBOx=0
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