PEF2091 Siemens Semiconductor Group, PEF2091 Datasheet - Page 102

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

Semiconductor Group
Figure 42
Setting SWST:MON to ’0’ disables the controller access to the Monitor Channel (Figure
42 upper left part).
Setting SWST:MON to ’1’ enables three different ways of controller access to the Monitor
Channel. ADF2:TE1 set to ’0’ allows to access either the transceiver core of the IEC-Q
(see Figure 42 upper right part, ADF2:MIN = ’1’) or the IOM
(Figure 42 lower left part, ADF2:MIN = ’0’).
Setting ADF2:TE1 to ’1’ in TE mode gives access to IOM
IOM
IOM
®
®
-2 channel 0 directed out of the IEC-Q. This allows to program devices linked to
-2 channel 1 (e.g. ARCOFI
DIN
DOUT
DIN
DOUT
MODE 1 : Monitor Channel access
MODE 3a : Monitor Channel access
IOM -2 Channel 0
Monitor Channel Access Directions
R
P Interface
P Interface
disabled
to IOM -2
SWST : MON = 0
SWST : MON = 1
ADF2 : MIN = 0
ADF2 : TE1 = 0
R
"DIN"
"DOUT"
"DIN"
"DOUT"
IEC-Q Core
IEC-Q Core
IEC-Q TE
IEC-Q TE
®
) via the processor interface of the IEC-Q.
102
DIN
DOUT
DIN
DOUT
MODE 2 : Monitor Channel access
MODE 3b : Monitor Channel access
IOM -2 Channel 1
R
P Interface
P Interface
to Kernel
to IOM -2 Channel 1
in TE mode
SWST : MON = 1
ADF2 : MIN = 1
ADF2 : TE1 = 0
SWST : MON = 1
ADF2 : MIN = x
ADF2 : TE1 = 1
®
®
Operational Description
-2 channel 1 rather than
-2 interface of the IEC-Q
R
"DIN"
"DOUT"
"DIN"
"DOUT"
IEC-Q Core
IEC-Q Core
IEC-Q TE
IEC-Q TE
Data Sheet 01.99
ITS10293
PEB 2091
PEF 2091