XRT83L34ES Exar, XRT83L34ES Datasheet - Page 13

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

Specifications of XRT83L34ES

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

xr
QUAD T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
S
IGNAL
TDATA_0
TDATA_1
TDATA_2
TDATA_3
TPOS_0/
TPOS_1/
TPOS_2/
TPOS_3/
N
AME
P
127
104
101
IN
2
#
T
YPE
I
Transmit Positive-Polarity Data Input pin/Transmit Data Input pin:
The exact function of this input pin depends upon whether the XRT83L34
device has been configured to operate in the Single-Rail or Dual-Mode, as
described below.
Dual-Rail Mode Operation - Transmit Positive-Polarity Data Output -
TPOS_n:
For Dual-Rail Applications, the System-Side Terminal Equipment should apply
the "positive-polarity" portion of the outbound DS1/E1 data-stream to this input
pin. Likewise, the System-Side Terminal Equipment should also apply the
"negative-polarity" portion of the outbound DS1/E1 data-stream to the
TNEG_n input pin.
The Transmit Section of Channel n will sample this input pin (along with
TNEG_n) upon the "user-selected" edge of TCLK_n. The Transmit Section of
Channel n will generate a "positive-polarity" pulse (via the outbound DS1/E1
line signal) anytime it samples this input pin at a logic "HIGH" level. The
Transmit Section of Channel n will NOT generate a "positive-polarity" pulse
(via the outbound DS1/E1 line signal) anytime it samples this input pin at a
logic "LOW" level.
Single-Rail Mode Operation - Transmit Data Output - TDATA_n:
For Single-Rail Applications, the System-Side Terminal Equipment should
apply the entire "outbound" DS1/E1 data-stream to this input pin. The Trans-
mit Section of Channel n will sample this input pin upon the "user-selected"
edge of TCLK_n. In the Single-Rail Mode, the internal B8ZS/HDB3 Encoder
will be enabled, and the Transmit Section of the Channel will generate and
transmit "positive" and "negative-polarity" pulses within the outbound DS1/E1
line signal, based upon this "B8ZS/HDB3 Encoder.
N
OTE
:
channels.
This pin is internally pulled “Low” with a 50kΩ resistor for each
10
D
ESCRIPTION
XRT83L34
REV. 1.0.1