XRT83L314ES Exar, XRT83L314ES Datasheet - Page 30

• Manufacturer Part Number: XRT83L314ES
• Description: LIN Transceivers
• Manufacturer: Exar

Specifications of XRT83L314ES

• Product Category: LIN Transceivers
• Rohs: yes

XRT83L314
14-CHANNEL T1/E1/J1 LONG-HAUL/SHORT-HAUL LINE INTERFACE UNIT
REV. 1.0.0
The transmit path of the XRT83L314 LIU consists of 14 independent T1/E1/J1 transmitters. The following
section describes the complete transmit path from TCLK/TPOS/TNEG inputs to TTIP/TRING outputs. A
simplified block diagram of the transmit path is shown in Figure 19.
F
In dual rail mode, TPOS and TNEG are the digital inputs for the transmit path. In single rail mode, TNEG has
no function and can be left unconnected. The XRT83L314 can be programmed to sample the inputs on either
edge of TCLK. By default, data is sampled on the falling edge of TCLK. To sample data on the rising edge of
TCLK, set TCLKE to "1" in the appropriate global register. Figure 20 is a timing diagram of the transmit input
data sampled on the falling edge of TCLK. Figure 21 is a timing diagram of the transmit input data sampled on
the rising edge of TCLK. The timing specifications are shown in Table 7.
F
F
3.0 TRANSMIT PATH LINE INTERFACE
3.1
IGURE
IGURE
IGURE
TPOS
TNEG
TCLK
19. S
20. T
21. T
TCLK/TPOS/TNEG Digital Inputs
RANSMIT
RANSMIT
IMPLIFIED
HDB3/B8ZS
Encoder
TPOS
TNEG
TCLK
D
D
TPOS
TNEG
TCLK
or
B
or
ATA
ATA
LOCK
S
S
AMPLED ON
AMPLED ON
D
IAGRAM OF THE
Attenuator
Tx Jitter
F
R
ALLING
ISING
T
E
T
T
RANSMIT
SU
SU
E
DGE OF
Control
Timing
DGE OF
26
P
TCLK
T
T
ATH
TCLK
HO
HO
TCLK
TCLK
Tx Pulse Shaper
& Pattern Gen
F
R
TCLK
TCLK
R
F
Line Driver
TTIP
TRING