XRT75R12DIB-F Exar Corporation, XRT75R12DIB-F Datasheet - Page 39
![Peripheral Drivers & Components (PCIs) 12 Channel 3.3V-5V temp -45 to 85C](/photos/16/9/160975/xrt75r12_sml.jpg)
XRT75R12DIB-F
Manufacturer Part Number
XRT75R12DIB-F
Description
Peripheral Drivers & Components (PCIs) 12 Channel 3.3V-5V temp -45 to 85C
Manufacturer
Exar Corporation
Datasheet
1.XRT75R12DIB-F.pdf
(133 pages)
Specifications of XRT75R12DIB-F
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Operating Supply Voltage
3.3 V to 5 V
Package / Case
TBGA-420
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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REV. 1.0.3
The transmitter is designed so that the LIU can accept serial data from a local device, encode the data
properly, and then output an analog pulse according to the pulse shape chosen in the appropriate registers.
This section describes the detailed operation of various blocks within the transmit path. A simplified block
diagram of the transmit path is shown in
Transmit Digital Input Interface
The method for applying data to the transmit inputs of the LIU is a serial interface consisting of TxClk, TxPOS,
and TxNEG. For single rail mode, only TxClk and TxPOS are necessary for providing the local data from a
Framer device or ASIC. Data can be sampled on either edge of the input clock signal by programming the
appropriate register. A typical interface is shown in
F
F
6.0 THE TRANSMITTER SECTION
IGURE
IGURE
TRing_n
MRing_n
TTIP_n
MTIP_n
DMO_n
22. T
23. T
TWELVE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER
YPICAL INTERFACE BETWEEN TERMINAL EQUIPMENT AND THE
RANSMIT
P
Monitor
Device
ATH
(E3/DS3 or STS-1
Driver
Line
Equipment
B
Terminal
Framer)
LOCK
Shaping
D
Control
Pulse
Tx
Tx
IAGRAM
Figure
TxPOS
TxNEG
TxLineClk
Control
Timing
22.
Figure
35
TPData
TNData
TxClk
Exar E3/DS3/STS-1 LIU
Attenuator
23.
Jitter
Transmit
Logic
Block
MUX
XRT75R12D (
Channel n
Encoder
HDB3/
B3ZS
DUAL
-
RAIL DATA
XRT75R12D
TxClk_n
TxPOS_n
TxNEG_n
TxON
)
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