pef20550 Infineon Technologies Corporation, pef20550 Datasheet - Page 274

• Manufacturer Part Number: pef20550
• Description: Extended Line Card Interface Controller Elic
• Manufacturer: Infineon Technologies Corporation

Upstream: CFI port 1, timeslot 4, bits 7 … 0 to PCM port 0, timeslot 5, bits 7 … 0
W:MADR
W:MAAR
W:MACR
The following sequence sets transmit timeslot 5 of PCM port 0 to low impedance:
W:MADR
W:MAAR
W:MACR
After these three programming steps, the ELIC memories will have the following
contents:
Figure 95
Memory Content in Case of a PCM
Semiconductor Group
Up-
stream
Down-
stream
P1, TS4
P1, TS4
CFI
Frame
0
127
0
127
= 0000 1001
= 1001 0010
= 0111 0001
= 0000 1111
= 1000 1001
= 0110 0000
Code Field
0
0
0
0
0
0 0
1
Control Memory
B
B
B
B
B
B
0 0 0
0
0
PCM timeslot encoding (pointer to ‘upstream’ DM,
loop switch (MSB = 0) activated)
CFI timeslot encoding (address of upstream CM)
CM code for switching a 64 kBit/s/bits 7 … 0
channel (0001)
all bits to low Z
PCM timeslot encoding
MOC code to access the tristate field
Data Field
0
0
1
1
1
0 0 1
0
0
PCM Loop
1
274
Code Field
1 1 1 1
Data Memory
Data Field
Application Hints
P0, TS13
P0, TS5
PEB 20550
PCM
Frame
PEF 20550
0
127
0
127
Up-
stream
ITD08074
Down-
stream
01.96