PEB2255H-V13 Infineon Technologies, PEB2255H-V13 Datasheet - Page 207

• Manufacturer Part Number: PEB2255H-V13
• Description: IC INTERFACE LINE 80-MQFP
• Manufacturer: Infineon Technologies

Specifications of PEB2255H-V13

• Applications: *
• Interface: *
• Voltage - Supply: *
• Package / Case: 80-SQFP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PEB2255H-V13; PEB2255H-V13IN

Transmit Pulse-Mask 0...2 (Read/Write)
Value after RESET: 9C
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 via registers XPM2...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 XPM2...0 changes the amplitude of the
differential voltage on XL1/2 by approximately 110 mV.
Example:120
Programming values for XPM0...2: BD
XLHP…
Data Sheet
XPM0
XPM1
XPM2
XLHP
XP12
XP30
7
interface and wired as shown in
XP04-00: First pulse shape level
XP14-10: Second pulse shape level
XP24-20: Third pulse shape level
XP34-30: Fourth pulse shape level
XPM04-00: 1D
XPM14-10: 1D
XPM24-20: 00
XPM34-30: 00
Transmit Line High Power
0…
1…
XP11
XP24
XLT
H
, 03
Normal operation
With this bit the output current capability of the transmit line XL1
and XL2 can be influenced. Connecting low impedances to the
outputs XL1/XL2 this bit should be set to increase the possible
output current. Setting this bit has no influence on the voltage
levels of the pulse shape.
DAXLT
H
XP10
XP23
, 00
H
H
H
H
H
or 29 decimal
or 29 decimal
XP04
XP22
H
, 03
207
H
, 00
XP03
XP21
XP34
H
Figure 23
XP02
XP20
XP33
on page 79.
XP01
XP14
XP32
FALC-LH V1.3
XP00
XP13
XP31
E1 Registers
0
PEB 2255
2000-07
(24)
(25)
(26)