78P2342JAT
2-port E3/DS3/STS-1 LIU
with Jitter Attenuator
PIN DESCRIPTION
LEGEND
TYPE
A
DESCRIPTION
Analog Pin
CMOS Digital Input
CMOS Digital Input w/ Pull-up
CMOS Digital Input w/ Pull-down
CMOS Schmitt Trigger Input
TYPE DESCRIPTION
CIT
CO
COZ
S
CMOS 3-State Input
CMOS Digital Output
CMOS Tristate Digital Output
Supply
CI
CIU
CID
CIS
G
Ground
TRANSMITTER PINS
NAME
PIN
TYPE
DESCRIPTION
Transmit Positive Data/Transmit NRZ: When ENDEC bit =’1’, a logic
one on this pin generates a positive AMI pulse on the coax. This pin
should not be high at the same time that corresponding TNEGx is high.
When ENDEC bit =’0’, data on this pin is encoded and converted into
positive and negative AMI pulses.
23, 31
CI
TPOSx
TNEGx
Transmit Negative Data: When ENDEC bit =’1’, a logic one on this pin
generates a negative AMI pulse on the coax. This pin should not be
high at the same time that corresponding TPOSx is high. When
ENDEC bit =’0’, this pin is ignored.
24, 32
CI
Transmitter Clock Input: This signal is used to latch the respective
TPOSx and TNEGx signals into the 78P2342JAT.
25, 33
98, 92
CIS
A
TCLKx
LOUTPx
Line Out: Differential AMI Outputs. Requires a 1:2CT center-tapped
transformer and a shunt termination resistor. See APPLICATION
INFORMATION section for more info.
LOUTNx
99, 93
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TDK [ TDK ELECTRONICS ]
