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參數(shù)資料
| 型號： | XRT81L27IV |
| 廠商： | EXAR CORP |
| 元件分類： | 數(shù)字傳輸電路 |
| 英文描述： | SEVEN CHANNEL E1 LINE INTERFACE UNIT WITH CLOCK RECOVERY |
| 中文描述： | DATACOM, PCM TRANSCEIVER, PQFP128 |
| 封裝： | TQFP-128 |
| 文件頁數(shù)： | 8/30頁 |
| 文件大?。?/td> | 194K |
| 代理商： | XRT81L27IV |
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XRT81L27
SEVEN CHANNEL E1 LINE INTERFACE UNIT WITH CLOCK RECOVERY
REV. 1.1.0
á
6
52
TNEG_5/
CODE_5
I-L
Transmitter 5 Negative Data Input:
(see pin 39)
I
53
TPOS_5/
TDATA_5
I
Transmitter 5 Positive/ NRZ Data Input:
(see pin 38)
54
TClk_5
I
Transmitter 5 Clock Input:
E1 rate at 2.048MHz ± 50ppm.
55
GND
Gnd
Digital Supply Ground
56
VDD
Vdd
Digital Positive Supply(3.3V± 5%)
57
LOS_5
O
Receiver 5 Loss of Signal:
(see pin 2)
58
RPOS_5/
RDATA_5
O
Receiver 5 Positive/NRZ Data Output:
(see pin 35
)
59
RNEG_5/
LCV_5
O
Receiver 5 Negative Data Output:
(see pin 34)
60
RClk_5
O
Receiver 5 Clock Output.
61
LOS_6
O
Receiver 6 Loss of Signal:
(see pin 2)
62
RPOS_6/
RDATA_6
O
Receiver 6 Positive /NRZ Data Output:
(see pin 35
)
63
RNEG_6/
LCV_6
O
Receiver 6 Negative Data Output:
(see pin 34)
64
RClk_6
O
Receiver 6 Clock Output.
65
RClkP
I-L
Receiver Clock Output Polarity: (Hardware Mode
)
"Low", All channel RPOS /RDATA and RNEG/LCV output data are
updated on the falling edge of RClk.
"High" to select data update on rising edge of RClk.
66
TClkP
I-L
Transmit Clock Polarity: (Hardware Mode
)
"Low", transmit input data is sampled using the falling edge of TClk.
"High" to select rising edge of TClk for data sampling.
67
RRING_6
I
Receiver 6 Bipolar Negative Input:
68
RTIP_6
I
Receiver 6 Bipolar Positive Input:
69
SR/DR
I-L
Single-rail/Dual-rail Select:
In
Hardware Mode
and with this pin tied to "High", input transmit data
and receive output data is selected for
Single-Rail mode
operation.
"Low" to select
Dual-Rail mode
.
70
MClk
I
Master Clock Input:
This signal is an independent 2.048MHz clock with accuracy better than
±50ppm and duty cycle within 40% to 60%. The function of MCLK is to
provide timing source for the PLL clock recovery circuit, reference clock
to insert All Ones data in the transmit as well as the receive paths.
71
TGND_5
Gnd
Transmitter 5 Supply Ground
72
TRING_5
O
Transmitter 5 Ring Output:
Negative bipolar data output to the line
PIN DESCRIPTIONS
N
OTE
: I -H
indicates an input pin with a 50k
pull-up Resistor, I-L indicates an input pin with a 50k
pull-down resistor.
P
IN
#
N
AME
T
YPE
D
ESCRIPTION
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| XRT82D20 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE CHANNEL E1 LINE INTERFACE UNIT |
| XRT82D20_06 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE CHANNEL E1 LINE INTERFACE UNIT |
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