peb20550 Infineon Technologies Corporation, peb20550 Datasheet - Page 160

• Manufacturer Part Number: peb20550
• Description: Extended Pcm Interface Controller
• Manufacturer: Infineon Technologies Corporation

Downstream: CFI port 2, time slot 10, bits 5 … 4 from PCM port 0, time slot 4, bits 7 … 6
W:MADR
W:MAAR
W:MACR
Finally the CSCR register has to be programmed to define the subchannel positions at
the CFI:
W:CSCR = 1001 XX11
After these three programming steps, the EPIC memories will have the following content:
Figure 57
Memory Content in Case of CFI - PCM Subchannel Connections
Semiconductor Group
Up-
stream
Down-
stream
CFI
Frame
0
0
= 0001 0000
= 0010 1100
= 0111 0111
127
127
P0, TS3
Bits 1, 0
P3, TS7
Bits 3, 2
P2, TS7
Bits 3, 0
P2, TS10
Bits 5, 4
Code Field
0
0 1
0
0
0
1 0
1
1
1
1 1
B
0
0
1
Control Memory
B
B
B
0
0 0 0
1 0 0 1
1
PCM time slot encoding, the subchannel position is
defined by MACR:CMC3 … 0 = 0111
CFI time slot encoding, the subchannel position is
defined by CSCR:SC21 … 20 = 01
CM code for switching a 16 kbit/s/bits 7 … 6
channel (0111)
0
0
Data Field
0
0
port 0: bits 1 … 0 or 3 … 0; port 1: not used in this
example;
port 2: bits 5 … 4 or 3 … 0; port 3: bits 3 … 2 or 7 … 4
0
1
1
0
0
0
1 0
0 0 0
0
0
0
0
1
0
0
1
160
Code Field
0
1
0 1
Data Memory
-
-
Data Field
- -
Application Hints
Bits 7, 4
Bits 7, 6
P0, TS4
P1, TS3
P0, TS4
PEB 2055
PCM
Frame
PEF 2055
0
127
0
127
Up-
stream
ITD08072
Down-
stream