PEF2091 Siemens Semiconductor Group, PEF2091 Datasheet - Page 174

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

Semiconductor Group
Figure 75
Legend
Any State
Pin-SSP or
Pin-RES or
Pin (PS1=1) or
µP-SSP or
µP-RES or
SSP or RES or
PFOFF or LTD
Signal to U
CI-Code Indication (DU)
State Name
State Transition Diagram LT-Repeater Mode
IN
OUT
SL0/SP
SB to U
HI
Pin PS1=1
Test
SL3T
Receiver Reset
SL0
Loss of Signal
RES1
TN
DEAC
LSL
LSL
-
(AR or ARL) & (LSEC or T5E)
T7S
RES or
RES1
-
-
Any State
Pin-DT, µP-DT
or DT
T7E
DR
LSUE
LSUE
TN & DC
SEC or T6E or ARL
T7S
T1S
LSU
T1S, T2S
TN or TL
(Loop)
LSEC or
T4E
Pend. Transparent
EI3
Tear Down Error
SL3T
SL3T
A//FJ
SL3T
T1E
Loss of Synchr.
SL0
SL0
SL0
SL1
SL2
EC-Converged
SL2
T2E
T3S
SL0
TL
EQ-Training
Transparent
EC-Training
Deactivated
Wait for TN
174
DI
EI3/RSY
Alerting
Awake
UAI/FJ
ARM
RSY
AR
AR
DI
DI
ARX or UAR) &
T1S, T4S
RES1
T6S
T8E
(AR or AR0 or
T5S
ARM
SFD & (BBD1 or BBD0 or CRCOK)
T8S
LOF
EI2/FJ
T2S
T3E
-
-
-
-
-
-
-
-
-
-
-
EI3
/TN
T1E
/(LSEC or T4E)
DR
DR
T2S
T1S, T5S
LOF
T1S
RES1
RES1
T9E &
ARL
Pend. Deactivation
T2E
SL3T
SL0
Tear Down
Operational Description
DEAC
DEAC
SL0
Reset for Loop
Awake Error
T10S
-
T10E
-
-
AR
DI
T1S,
T2S
T9E &
(LSEC or T4E)
SL0
-
Data Sheet 01.99
LSU
T9S,
T4S
PEB 2091
PEF 2091