参数资料
型号: 78P2253-IGT
厂商: Electronic Theatre Controls, Inc.
英文描述: XTAL CER SMT 11X5 4PAD
中文描述: 收发器
文件页数: 4/23页
文件大小: 107K
代理商: 78P2253-IGT
78P2253
E4/STM-1/STS-3/OC-3
Transceiver
4
PIN DESCRIPTION
LEGEND
TYPE
DESCRIPTION
TYPE
DESCRIPTION
A
Analog Pin
PI
PECL Digital Input
CI
CMOS Digital Input
PO
PECL Digital Output
CO
CMOS Digital Output
S
Supply Pin
TRANSMIT PINS
NAME
PIN
TYPE
DESCRIPTION
TXDTP
TXDTN
TXCKP
TXCKN
19
20
22
23
PI
Transmit Data Inputs - Serial Mode.
PO
Transmit Clock Output - Serial Mode.
TXDT[7:0]
11-18
CI
Transmit Data Inputs – Parallel Mode. TXDT[7:4] are ignored in 4 bit
mode.
TXCK
10
CO
Reference Clock Output – Serial mode.
Transmit Clock Output – Parallel Mode.
CMIOUTP
CMIOUTN
ECLOUTP
ECLOUTN
60
59
56
55
A
Transmit Output in CMI mode.
No signal is output in ECL mode.
PO
Transmit Outputs for ECL mode.
No signal is output in CMI mode.
RECEIVE PINS
NAME
PIN
TYPE
DESCRIPTION
CMIINP
CMIINN
50
49
A
Receive inputs in CMI mode.
Transformer coupled from the coaxial cable.
Ignored in ECL mode.
ECLINP
ECLINN
RXCKP
RXCKN
52
51
PI
Receiver inputs in ECL mode.
Ignored in CMI mode.
Recovered Receive Clock – Serial Mode.
25
26
PO
RXCK
RXDTP
RXDTN
38
27
28
CO
PO
Recovered Receive Clock – Parallel Mode.
Receive data – Serial Mode.
RXDT[7:0]
30-37
CO
Receive data – Parallel Mode. In 4 bit mode RXDT[3:0] are used and
RXDT[7:4] are pulled low.
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