PEF 2054 N V2.1 Infineon Technologies, PEF 2054 N V2.1 Datasheet - Page 148
PEF 2054 N V2.1
Manufacturer Part Number
PEF 2054 N V2.1
Description
IC INTERFACE CTRLR PCM LCC-44
Manufacturer
Infineon Technologies
Series
EPICr
Datasheet
1.PEF_2054_N_V2.1.pdf
(269 pages)
Specifications of PEF 2054 N V2.1
Function
PCM Interface Controller
Interface
ISDN, PCM
Number Of Circuits
1
Voltage - Supply
5V
Current - Supply
9.5mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
44-LCC
Includes
Board Controller, Channel Switching
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power (watts)
-
Other names
PEF2054NV2.1XT
PEF2054NV21XK
SP000057916
SP000075438
PEF2054NV21XK
SP000057916
SP000075438
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Tristate Behavior at the Configurable Interface
The downstream control memory code field, together with the CSCR and OMDR
registers also defines the state of the output driver at the downstream CFI ports.
Unassigned channels (code “0000”) are set to the inactive state. Subchannels (codes
“0010” to “0111”) are only active during the subtime slot position specified in CSCR. The
OMDR:COS bit selects between tristate outputs and open drain outputs:
Table 25
Logical State
Logical 0
Logical 1
Inactive
1)
Figure 55 illustrates this behavior in case of tristate outputs:
Figure 55
Tristate Behavior at the CFI
Semiconductor Group
An external pull-up resistor is required to establish a high voltage level.
CFI Time-Slot #
CM Data Field
CM Code Field
DD #
High Z
1 -
0 -
X X X X X X X X
0
Unassigned
Channel
0
N
0
Tristate Outputs
Low voltage level
High voltage level
High impedance
0
0
(Switched from PCM)
64 kbit/s Channel
Pointer to DM
0
N+1
148
0
1
CSCR : SC#1..#0 = 01
(Switched from PCM)
0
16 kbit/s Channel
Pointer to DM
1
N+2
1
Open Drain Outputs
Low voltage level
Not driven
Not driven
0
1
1
(Always 64 kbit/s)
µP Channel
0
Application Hints
1)
1)
1
0
N+3
1
0
0
PEB 2055
0
PEF 2055
ITD08070
1
1
0
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