PEF2091 Siemens Semiconductor Group, PEF2091 Datasheet - Page 147

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

4.4.2.1
Figure 72
Semiconductor Group
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)
LT Modes State Diagram
Any State
Pin-DT, µP-DT or DT
DR or LOF
State Name
or LSUE
DR or LOF
or LSUE
State Transition Diagram in LT Modes
IN
OUT
SL0/SP
SB to U
HI
Pin PS1=1
Pend. Transparent
Test
SL3T
SL3T
Receiver Reset
SL0
Loss of Signal
RES1
TN
DEAC
UAI/FJ
-
LSL
LSL
RES or
SL3T
T7S
A//FJ
a=1,d=1
RES1
a=0,d=1
LSUE
Transparent
T8E
-
act=1
act=0
DR
T7E
a=1,d=1
TN & DC
EI2/FJ
SEC or T6E or ARL
T8S
T7S
T4S,
T1S
LSU
LSEC or T5E T6S
AR0
T1S, T2S
TN or TL
(Loop)
LSEC or
T4E
EI3
SL0
SL0
SL0
SL1
SL2
EC-Converged
SL2
Tear Down Error
T2E
T3S
SL3T
T1E
TL
Loss of Synchr.
SL0
EC-Training
EQ-Training
sai=0 & act = 0
Deactivated
Wait for TN
DI
147
Alerting
Awake
EI3/RSY
ARM
AR
AR
RSY
DI
DI
T1S, T4S
(AR or AR0 or ARX
or UAR) & /TN
ARM
T5S
a=0,d=1
a=0,d=1
RES1
a=0,d=1
LOF
T2S
T3E
SFD & (BBD1 or BBD0 or CRCOK)
& (/T1E or ARX)
-
-
-
-
-
act=1 & /AR0
EI3
-
T1E
/(LSEC or T4E)
T1S, T5S
T2S
T1S
RES1
RES1
AR/FJ
SL3T
S/T Deactivated
T9E &
UAR
sai=1
sai=0
ARL
T2E
Pend. Deactivation
SL3T
SL3T
SL0
a=0,d=1
UAI/FJ
Tear Down
Line Active
DR
UAI/FJ
Operational Description
DEAC
DEAC
SL0
Reset for Loop
Awake Error
-
a=0,d=0
a=0,d=1
AR0
T10S
T10E
DR or LOF
or LSUE
-
AR
DI
T1S,
T2S
T9E &
(LSEC or T4E)
SL0
DR or LOF
-
or LSUE
Data Sheet 01.99
LSU
T9S,
T4S
PEB 2091
PEF 2091