XRT83SL28ES Exar, XRT83SL28ES Datasheet - Page 12

• Manufacturer Part Number: XRT83SL28ES
• Description: Peripheral Drivers & Components - PCIs 8 CH E1 LIU SH
• Manufacturer: Exar

Specifications of XRT83SL28ES

• Product Category: Peripheral Drivers & Components - PCIs
• Rohs: yes

XRT83SL28
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
HARDWARE MODE INTERFACE
TERSEL1
TERSEL0
TCLKinv
RCLKinv
JASEL1
JASEL0
SR/DR
N
LBM1
LBM0
AME
125
124
107
P
74
56
57
20
21
2
IN
T
YPE
I
I
I
I
I
I
Single Rail / Dual Rail Select Input
This pin is used to select Single Rail or Dual Rail data formats. By default,
Dual Rail is selected. To select Single Rail mode, this pin must be pulled
"High". Once this pin is pulled "High", TNEGn/CODEn can be used to select
between AMI and HDB3 Encoding/Decoding.
N
Termination Impedance Select
TERSEL[1:0] are used to set the internal impedance of the LIU for the Receive
and Transmit paths.
"00" = 75Ω for Tx and "High-Z" for Rx
"01" = 120Ω for Tx and "High-Z" for Rx
"10" = 75Ω for Tx and Rx
"11" = 120Ω for Tx and Rx
Transmit Clock Data
"Low" = TPOS/TNEG data is sampled on the falling edge of TCLK
"High" = TPOS/TNEG data is sampled on the rising edge of TCLK
N
Receive Clock Data
"Low" = RPOS/RNEG data is updated on the rising edge of RCLK
"High" = RPOS/RNEG data is updated on the falling edge of RCLK
N
Loop Back Mode Select
LBM[1:0] are used to configure the LIU into diagnostic loopback modes. To
select the channel number, see pins CHLB[3:0].
N
Jitter Attenuator Select
JASEL[1:0] are used to configure the jitter attenuator into the Receive or
Transmit path for all eight channels.
N
OTE
OTE
OTE
OTE
OTE
LBM1
JASEL1
0
0
1
1
: Internally pulled "Low" with a 50kΩ resistor.
: Internally pulled "Low" with a 50kΩ resistor.
: Internally pulled "Low" with a 50kΩ resistor.
: Internally pulled "Low" with a 50kΩ resistor.
: Internally pulled "Low" with a 50kΩ resistor.
0
0
1
1
LBM0
JASEL0
0
1
0
1
10
0
1
0
1
Remote Loopback
Analog Loopback
Loopback Mode
Digital Loopback
No Loopback
JA Select Mode
Transmit Path
Receive Path
JA Disabled
JA Disabled
D
ESCRIPTION
xr
REV. 1.0.0