PEF2091 Siemens Semiconductor Group, PEF2091 Datasheet - Page 232

• Manufacturer Part Number: PEF2091
• Description: ICs for Communications(ISDN Echocancellation Circuit)
• Manufacturer: Siemens Semiconductor Group

Semiconductor Group
6.4
Note 66: This example applies only in µP-NT mode.
Figure 91
CIWU = C7
ISTA = 02
CIRU = 03
P
Example for C/I Channel Programming
Example: C/I-Channel Use (all data values hexadecimal)
CICU
Interrupt
C/I Channel Handler
Transmit C/I-
Command "RES"
New C/I-Code
received from U
Read New C/I-Code.
232
C/I = 0001b
C/I = 0000b
=
State
Send C/I-Indication
"DR"
Transfer to "TEST"
U-Transceiver
Data Sheet 01.99
Programming
PEB 2091
PEF 2091
ITD10291