PEB2256H-V12 Infineon Technologies, PEB2256H-V12 Datasheet - Page 241
![no-image](/images/manufacturer_photos/0/3/327/infineon_technologies_sml.jpg)
PEB2256H-V12
Manufacturer Part Number
PEB2256H-V12
Description
IC INTERFACE LINE 3.3V 80-MQFP
Manufacturer
Infineon Technologies
Datasheet
1.PEB2256H-V12.pdf
(490 pages)
Specifications of PEB2256H-V12
Applications
*
Interface
*
Voltage - Supply
*
Package / Case
80-SQFP
Mounting Type
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
PEB2256H-V12
PEB2256H-V12IN
PEB2256H-V12IN
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PEB2256H-V12
Manufacturer:
Infineon Technologies
Quantity:
10 000
- Current page: 241 of 490
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Transmit Pulse Mask (Read/Write)
Value after reset: 7B
XPM0
XPM1
XPM2
The transmit pulse shape which is defined in ITU-T G.703 is output on pins XL1 and XL2.
The level of the pulse shape can be programmed by registers XPM(2:0) to create a
custom waveform. In order to get an optimized pulse shape for the external transformers
each pulse shape is internally divided into four sub pulse shapes. In each sub pulse
shape a programmed 5 bit value defines the level of the analog voltage on pins XL1/2.
Together four 5 bit values have to be programmed to form one complete transmit pulse
shape. The four 5 bit values are sent in the following sequence:
Changing the LSB of each subpulse in registers XPM(2:0) changes the amplitude of the
differential voltage on XL1/2 by approximately 80 mV.
Example:120
Programming values for XPM(2:0): 00
XLT
Data Sheet
XP12
XP30
7
0
interface and wired as shown in
XP04 to 00:
XP14 to 10:
XP24 to 20:
XP34 to 30:
XP04 to 00:
XP14 to 10:
XP24 to 20:
XP34 to 30:
Transmit Line Tristate
0 =
1 =
XP11
XP24
XLT
H
, 03
Normal operation
Transmit line XL1/XL2 or XDOP/XDON are switched into high-
impedance state. If this bit is set the transmit line monitor status
information is frozen (default value after hardware reset).
H
, 40
DAXLT
XP10
XP23
H
First pulse shape level
Second pulse shape level
Third pulse shape level
Fourth pulse shape level
1B
1B
00
00
H
H
H
H
XP04
XP22
or 27 decimal
or 27 decimal
H
, 03
241
H
,7B
XP03
XP21
XP34
H
Figure 50
XP02
XP20
XP33
on
page
XP01
XP14
XP32
155.
FALC56 V1.2
XP00
XP13
XP31
E1 Registers
0
PEB 2256
2002-08-27
(26)
(27)
(28)
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