XRT83L34ES Exar, XRT83L34ES Datasheet - Page 46

• Manufacturer Part Number: XRT83L34ES
• Description: Peripheral Drivers & Components - PCIs
• Manufacturer: Exar

Specifications of XRT83L34ES

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

XRT83L34
REV. 1.0.1
RECEIVE
For N+1 redundancy, the receivers on the primary cards should be programmed for internal impedance mode.
The receivers on the backup card should be programmed for external impedance mode. Since there is no
external resistor in the circuit, the receivers on the backup card will be high impedance. Select the impedance
for the desired mode of operation, T1/E1/J1. To swap the primary card, set the backup card to internal
impedance mode, then the primary card to external impedance mode. See
diagram of the receive section for a N+1 redundancy scheme.
N
F
OTE
IGURE
B ackp lane Interface
: For simplification, the over voltage protection circuitry was omitted.
19. S
QUAD T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
IMPLIFIED
R xT S EL=1, Internal
R xT S EL=1, Internal
R xT S EL=1, Internal
R xT S EL=1, External
P rim ary C ard
P rim ary C ard
B a ckup C ard
P rim ary C ard
B
LOCK
D
IAGRAM
X R T83L34
X R T83L34
X R T83L34
X R T83L34
R x
R x
R x
R x
- R
ECEIVE
S
ECTION FOR
43
Line Interface C ard
N+1 R
EDUNDANCY
Figure
1:1
1:1
1:1
19. for a simplified block
xr
T1/E 1 Line
T1/E 1 Line
T1/E 1 Line