PEB22554 SIEMENS [Siemens Semiconductor Group], PEB22554 Datasheet - Page 94
PEB22554
Manufacturer Part Number
PEB22554
Description
ICs for Communications
Manufacturer
SIEMENS [Siemens Semiconductor Group]
Datasheet
1.PEB22554.pdf
(397 pages)
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Table 9
Initial Values after RESET (cont’d)
Register
CMR2
GPC1
PC1-4
PC5
MODE
RAH1/2
RAL1/2
Initialization
For a correct start up of the Primary Access Interface a set of parameters specific to the
system and hardware environment must be programmed after RESET goes inactive.
Both the basic and the operational parameters must be programmed before the
activation procedure of the PCM line starts. Such procedures are specified in ITU-T and
ETSI recommendations (e.g. Fault conditions and consequent actions). Setting optional
parameters primarily makes sense when basic operation via the PCM line is guaranteed.
Table 10 gives an overview of the most important parameters in terms of signals and
control bits which are to be programmed in one of the above steps. The sequence is
recommended but not mandatory. Accordingly, parameters for the basic and operational
set up, for example, may be programmed simultaneously. The bit FMR1.PMOD should
always be kept low.
Semiconductor Group
Reset Value Meaning
00
00
00
00
00
00
FD
FF
H
H
H ,
H ,
H
H
H
H
, FF
, FF
00
00
H
H
H
H
SCLKR selected, SCLKX selected, Rec. synchr. pulse
sourced by SYPR, Tr. synchr. pulse sourced by SYPX,
system multiplex mode disabled, SEC port input active
high, FSC is sourced by channel 1, RCLK1 clock source:
channel 1,
Input function of ports RP(A-D) : SYPR,
Input function of ports XP(A-D) : SYPX
SCLKR, SCLKX, RCLK configured to inputs,
XMFS active low
Signaling controller disabled
Compare register for receive address cleared
94
Operational Description E1
PEB 22554
09.98
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