PEB22554 SIEMENS [Siemens Semiconductor Group], PEB22554 Datasheet - Page 309

• Manufacturer Part Number: PEB22554
• Description: ICs for Communications
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

resistors: 2
conditions.
DS1: The XPMxx register values shown in the table below are in decimal format.
Range in m
0 - 35
25 - 65
55 - 95
85 - 125
115 - 155
145 - 185
175 - 210
XLT…
DAXLT...
XLLP…
Changing the LSB of each subpulse in registers XPM2-0 will change the amplitude of the
differential voltage on XL1/2 by approximately 80 mV.
The XPM- values in the following table are based on simulations. They are valid for the
following external circuitry: transformer ratio: 1:2.4; cable: PULB 22AWG (100 ); serial
Semiconductor Group
. Adjustment of these coefficients may be necessary for other external
XP04-XP00
27
27
29
29
29
29
29
XP24-20: Third pulse shape level
XP34-30: Fourth pulse shape level
Transmit Line Tri-state
0
Disable Automatic Tristating of XL1/2
0...
1...
Reserved
0…
1…
1
Transmit line XL1/XL2 or XDOP/XDON are switched into high
Normal operation. If a short is detected on pins XL1/2 the
If a short is detected on pins XL1/2 an automatic setting these
Normal operation
Reserved ( not to be used)
Normal operation
impedance state. If this bit is set the transmit line monitor status
information will be frozen.
transmit line monitor will set the XL1/2 outputs into a high
impedance state.
pins into a high impedance state (by the XL-monitor) will be
disabled.
XP14-XP10
24
24
25
25
25
26
27
309
XP24-XP20
02
02
02
03
04
04
05
Operational Description T1 / J1
XP34-XP30
01
01
02
02
01
01
01
PEB 22554
09.98