peb20550 Infineon Technologies Corporation, peb20550 Datasheet - Page 230
peb20550
Manufacturer Part Number
peb20550
Description
Extended Pcm Interface Controller
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PEB20550.pdf
(269 pages)
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CTAR
CBSR = 0010 0000
CSCR = 0000 0000
Each SICOFI-4 device must be assigned to its individual IOM-2 channels by
pin-strapping. The SICOFI-4 coefficients (filter characteristics, gain, … ) as well as other
operation parameters, are programmed via the ELIC over the IOM-2 monitor channel.
Example
Initializing 4 consecutive CFI time slots as an analog IOM-2 channel.
Time slots 0, 1, 2, and 3 of CFI port 2 shall represent the IOM channel 0 of port 2. Time
slots 4, 5, 6, and 7 of CFI port 2 shall represent the IOM channel 1 of port 2. This requires
the SICOFI-4 to be pin-strapped to that slot by connecting pin TSS0 and pin TSS1 to 0 V.
Time slots 4 and 5 represent the two B channels that may for example be switched to
the PCM interface. Time slots 6 and 7 represent the monitor and signaling (SIG)
channels and must be initialized in the ELIC control memory (CM):
W: MADR = FF
W:MAAR
W: MACR = 7A
W: MADR = FF
W: MAAR = 1D
W: MACR = 7B
W: MADR = FF
W: MAAR = 9C
W: MACR = 7A
W: MADR = FF
W: MAAR = 9D
W: MACR = 7A
The above steps have to be repeated for all time slots that shall be handled by the
monitor or signaling handler of the EPIC (i.e. TS2 and TS3, TS10 and TS11, TS14
and TS15).
Semiconductor Group
= 0000 0010
= 1C
H
H
H
H
H
H
H
H
H
H
H
H
B
B
B
= 02
= 20
= 00
; 6 bit signaling value to be transmitted in time slot 7
; CFI address of downstream IOM port 2, time slot 6
; writing CM with code ‘1010’
; value don’t care, e.g. FF
; CFI address of downstream IOM port 2, time slot 7
; writing CM with code ‘1011’
; 6 bit signaling value expected upon initialization in time slot 7
; CFI address of upstream IOM port 2, time slot 6
; writing CM with code ‘1010’
; 6 bit signaling value expected upon initialization in time slot 7
; CFI address of upstream IOM port 2, time slot 7
; writing CM with code ‘1010’
H
H
H
PFS marks downstream CFI TS0
PFS marks downstream CFI bit 7, upstream bits
not shifted
64, 32, 16 kbit/s channels located on CFI TS bits
7 … 0, 7 … 4, 7 … 6
230
Application Hints
PEB 2055
PEF 2055
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