78P2253-IGT Просмотр технического описания (PDF) - TDK Corporation
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78P2253-IGT Datasheet PDF : 23 Pages
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78P2253
E4/STM-1/STS-3/OC-3
Transceiver
PIN DESCRIPTION
LEGEND
TYPE DESCRIPTION
A
Analog Pin
CI
CMOS Digital Input
CO
CMOS Digital Output
TRANSMIT PINS
NAME
TXDTP
TXDTN
TXCKP
TXCKN
TXDT[7:0]
PIN
19
20
22
23
11-18
TYPE
PI
PO
CI
TXCK
10
CO
CMIOUTP
CMIOUTN
ECLOUTP
ECLOUTN
60
A
59
56
PO
55
RECEIVE PINS
NAME
PIN
TYPE
CMIINP
CMIINN
50
A
49
ECLINP
ECLINN
RXCKP
RXCKN
RXCK
RXDTP
RXDTN
RXDT[7:0]
52
PI
51
25
PO
26
38
CO
27
PO
28
30-37
CO
TYPE
PI
PO
S
DESCRIPTION
PECL Digital Input
PECL Digital Output
Supply Pin
DESCRIPTION
Transmit Data Inputs - Serial Mode.
Transmit Clock Output - Serial Mode.
Transmit Data Inputs – Parallel Mode. TXDT[7:4] are ignored in 4 bit
mode.
Reference Clock Output – Serial mode.
Transmit Clock Output – Parallel Mode.
Transmit Output in CMI mode.
No signal is output in ECL mode.
Transmit Outputs for ECL mode.
No signal is output in CMI mode.
DESCRIPTION
Receive inputs in CMI mode.
Transformer coupled from the coaxial cable.
Ignored in ECL mode.
Receiver inputs in ECL mode.
Ignored in CMI mode.
Recovered Receive Clock – Serial Mode.
Recovered Receive Clock – Parallel Mode.
Receive data – Serial Mode.
Receive data – Parallel Mode. In 4 bit mode RXDT[3:0] are used and
RXDT[7:4] are pulled low.
4
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