peb20560 Infineon Technologies Corporation, peb20560 Datasheet - Page 283
peb20560
Manufacturer Part Number
peb20560
Description
Dsp Oriented Pbx Controller Doc
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PEB20560.pdf
(433 pages)
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4. Writing data to the upstream or downstream CM-data field and code field
MACR:
a) Switching Applications
Note: The corresponding CFI time-slot bits to be transferred are chosen in the
b) Pre-processed Applications
Table 5-39 Downstream
Application
Decentral D-channel handling
Central D-channel handling
6-bit Signaling (e.g. analog IOM)
8-bit Signaling (e.g. SLD)
D-Channel handling by SACCO-A
with ELIC-arbiter
(e.g. switching a CFI to/from PCM-connection).
0
CSCR-register.
CMC = 0000
CMC = 0001
CMC = 0010
CMC = 0011
CMC = 0100
CMC = 0101
CMC = 0110
CMC = 0111
The 4-bit code field of the control memory (CM) defines the functionality of a CFI
time-slot and thus the meaning of the corresponding data field. This 4-bit code,
written to the MACR:CMC3…0 bit positions, will be transferred to the CM-code
field. The 8-bit MADR value is at the same time transferred to the CM-data field.
There are codes for switching applications, pre-processed applications and for
direct µP-access applications, as shown below:
1
Unassigned channel (e.g. cancelling an assigned channel)
Bandwidth 64 kbit/s PCM time-slot bits transferred: 7…0
Bandwidth 32 kbit/s PCM time-slot bits transferred: 3…0
Bandwidth 32 kbit/s PCM time-slot bits transferred: 7…4
Bandwidth 16 kbit/s PCM time-slot bits transferred: 1…0
Bandwidth 16 kbit/s PCM time-slot bits transferred: 3…2
Bandwidth 16 kbit/s PCM time-slot bits transferred: 5…4
Bandwidth 16 kbit/s PCM time-slot bits transferred: 7…6
1
1
Even CM Address
CMC = 1000
CMC = 1010
CMC = 1010
CMC = 1010
CMC = 1010
5-40
CMC3
CMC2
Description of Registers
Odd CM Address
CMC = 1011
CMC = PCM-code for a
2-bit subtime-slot
CMC = 1011
CMC = 1011
CMC = 1011
CMC1
PEB 20560
CMC0
2003-08
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