PEF 2055 N V2.1 Infineon Technologies, PEF 2055 N V2.1 Datasheet - Page 125
PEF 2055 N V2.1
Manufacturer Part Number
PEF 2055 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 2055 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
PEF2055NV2.1X
PEF2055NV21XK
SP000075706
PEF2055NV21XK
SP000075706
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The complete value for CBSR is: CBSR = 04
2) In CFI mode 0, with a frame consisting of 32 time slots, the following timing
The CBSR:CUS bits must therefore be set to “0100”, according to figure 41.
Finally, the CMD2 register bits must be set to
FC2 … 0 = 011, COC = 0, CXF = 1, CRR = 0, CBN9 … 8 = 00, i.e. CMD2 = 68
Figure 45
Timing Signals for CFI Bit Shift Example 2
The framing signal source FSC shall mark CFI time slot 4, bit 1 in downstream direction
and CFI time slot 0, bit 5 in upstream direction. The data shall be transmitted with the
rising CRCL edge and sampled with the rising CRCL edge. The FSC signal shall be
sampled with the rising DCL edge.
The following CFI register values result:
Since FSC marks the downstream bit 1, the CBSR:CDS bits must be set to “000”,
according to table 18.
If the CBSR:CDS bits are set to “000”, FSC marks the time slot TSN – 1, according to
table 18.
FSC shall mark CFI time slot 4, i.e. TSN – 1 = 4, or TSN = 4 + 1 = 5
Semiconductor Group
FSC
DCL
DD#
Required
Offset in
Downstream
Direction
Required
Offset in
Upstream
Direction
DU#
relationship between the framing signal source FSC and the data signals is required:
Bit 3
Bit 7
Bit 2
0
Time-Slot 4
Bit 6
1
Start of Internal Frame
TS4,
Bit 1
Bit 1
TS0, Bit 5
Bit 5
Time-Slot 0
Bit 0
125
H
Bit 4
Bit 7
Bit 3
Time-Slot 5
Bit 6
Bit 2
Application Hints
Bit 5
CMD2
CMD1 CSM = 1
CFI Mode 0
CMD2 CRR = 1
PEB 2055
PEF 2055
:
:
:
CXF
H
ITT08060
=
0
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