XRT83SL30ES Exar, XRT83SL30ES Datasheet - Page 15

• Manufacturer Part Number: XRT83SL30ES
• Description: Peripheral Drivers & Components - PCIs 1 CHT1/E1 LIUSH
• Manufacturer: Exar

Specifications of XRT83SL30ES

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

TERMINATIONS
REV. 1.0.1
S
IGNAL
TERSEL1
TERSEL0
RXRES1
RXRES0
N
AME
SINGLE-CHANNEL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
P
43
42
51
52
IN
#
T
YPE
I
I
Termination Impedance Select pin 1
Termination Impedance Select pin 0
In the Hardware Mode and in the Internal Termination mode (TXTSEL=”1” and/or RXT-
SEL=”1”) TERSEL[1:0] control the transmit and receive termination impedance accord-
ing to the following table:
In the Internal Termination mode, the receive termination is realized completely by inter-
nal resistors or the combination of internal and one fixed external resistor (see descrip-
tion for RXRES[1:0] pins). In the internal termination mode the transformer ratio of 1:2
and 1:1 is required for the transmitter and receiver respectively with the transmitter out-
put AC coupled to the transformer.
N
Receive External Resistor Control pin 1
Receive External Resistor Control pin 0
In Hardware Mode, RXRES[1:0] pins selects the required value of the external fixed
resistor for the receiver according to the following table. This mode is only available in
the internal impedance mode by pulling RXTSEL “High”.
N
OTE
OTE
: This pin is internally pulled "Low" with a 50kΩ resistor.
: Internally pulled “Low” with 50kΩ resistor.
RXRES1
0
0
1
1
TERSEL1
12
0
0
1
1
RXRES0
0
1
0
1
TERSEL0
D
ESCRIPTION
0
1
0
1
No External Fixed Resistor
RX Fixed Resistor
Termination
240Ω
210Ω
150Ω
100Ω
110
120Ω
75 Ω
Ω
XRT83SL30