PEB 20570 F V3.1 Infineon Technologies, PEB 20570 F V3.1 Datasheet - Page 303
PEB 20570 F V3.1
Manufacturer Part Number
PEB 20570 F V3.1
Description
IC LINE CARD CTRLR HDLC TQFP-100
Manufacturer
Infineon Technologies
Datasheet
1.PEB_20570_F_V3.1.pdf
(308 pages)
Specifications of PEB 20570 F V3.1
Function
Line Card Controller
Interface
ISDN
Voltage - Supply
3.13 V ~ 3.47 V
Current - Supply
272.6mA
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
100-LFQFP
Includes
Layer-1 Control, Signaling Control, Signal Processing, Voice Channel Handling
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power (watts)
-
Number Of Circuits
-
Other names
PEB20570FV3.1X
PEB20570FV31XP
SP000007243
PEB20570FV31XP
SP000007243
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9.3
When applying the PCM outputs in a bus configuration with pull-ups to 5 V the output
drivers of the DELIC have an irregular behavior.
As can be seen from the illustration below, the PCM output drivers TXDn (n=0..3)
continue to drive ’High’ level even outside the time slot enabled by TSC. This error
occurs only if the last bit in the time slot is a ’1’. In this case no problem occurs if another
PCM port drives a ’0’ in the neighbor time slot. In other words this means that the output
driver drives 3.3 V for a certain time against the 5 V pull-up. As soon as a neighbor time
slot is driven to ’0’ by another port the DELIC stops driving immediately.
As the occurring current is no problem for the DELIC, this behavior is uncritical.
Figure 96
Figure 97
Data Sheet
TSC
TXD
TSC
TXD
PCM Output Driver Anomaly
Behavior of Output Driver if Last Bit is ’1’
Behavior of Output Driver if Last Bit is ’0’
286
Application Hints
5 V
3.3 V
0 V
5 V
3.3 V
0 V
0 V
3.3 V
0 V
3.3 V
PEB 20570
PEB 20571
2003-07-31
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