PIN DESCRIPTIONS (BY FUNCTI" />
參數(shù)資料
型號(hào)： XRT75L02IVTR-F
廠商： Exar Corporation
文件頁(yè)數(shù)： 47/50頁(yè)
文件大?。?/td> 0K
描述： IC LIU E3/DS3/STS-1 2CH 100TQFP
標(biāo)準(zhǔn)包裝： 1,000
類型： 線路接口裝置（LIU）
驅(qū)動(dòng)器/接收器數(shù)： 2/2
規(guī)程： DS3，E3，STS-1
電源電壓： 3.135 V ~ 3.465 V
安裝類型： 表面貼裝
封裝/外殼： 100-LQFP
供應(yīng)商設(shè)備封裝： 100-TQFP（14x14）
包裝： 帶卷 (TR)
xr
XRT75L02
REV. 1.0.3
TWO CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER
4
PIN DESCRIPTIONS (BY FUNCTION)
TRANSMIT INTERFACE
PIN #
SIGNAL NAME
TYPE
DESCRIPTION
81
TxON
I
Transmitter ON Input :
This input pin is used to either enable or disable the Transmit Output Driver.
"Low" - Disables the Transmit Output Driver. In this setting, the TTIP and
TRING output pins will be tri-stated.
"High" - Enables the Transmit Output Driver. In this setting, the TTIP and
TRING output pins will be enabled.
NOTES:
1.
Even when the XRT75L02 is configured in HOST mode, this pin will be
active. To enable software control of the Transmit Output Driver
output, pull this pin "High".
2.
When the Transmitter is turned off either in Host or Hardware mode,
the TTIP and TRing outputs are Tri-stated.
3.
This pins are internally pulled "High"
78
48
TxCLK_0
TxCLK_1
I
Transmit Clock Input for TPOS and TNEG - Channel 0:
Transmit Clock Input for TPOS and TNEG - Channel 1:
The frequency accuracy of this input clock must be of nominal bit rate ± 20 ppm.
The duty cycle can be 30%-70%.
By default, input data is sampled on the falling edge of TxCLK when input data
is changing on the rising edge of TxCLK..
76
50
TNEG_0
TNEG_1
I
Transmit Negative Data Input - Channel 0:
Transmit Negative Data Input - Channel 1:
In Dual-rail mode, these pins are sampled on the falling or rising edge of
TxCLK_n
NOTE: These input pins are ignored and must be grounded if the Transmitter
Section is configured to accept Single-Rail data from the Terminal
Equipment.
77
49
TPOS_0
TPOS_1
I
Transmit Positive Data Input - Channel 0:
Transmit Positive Data Input - Channel 1:
By default sampled on the falling edge of TxCLK
70
56
TTIP_0
TTIP_1
O
Transmit TTIP Output - Channel 0:
Transmit TTIP Output - Channel 1:
These pins along with TRING transmit bipolar signals to the line using a 1:1
transformer.
71
55
TRING_0
TRING_1
O
Transmit Ring Output - Channel 0:
Transmit Ring Output - Channel 1:
These pins along with TTIP transmit bipolar signals to the line using a 1:1 trans-
former.
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