PEF2091 Siemens Semiconductor Group, PEF2091 Datasheet - Page 175

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

Figure 76
Semiconductor Group
Any State
Pin-SSP or
Pin-RES or
µP-SSP or
µP-RES or
SSP or RES
LSU or (/LOF & T13E)
1) Refer to Note 47: on page 173
T7E & DI
T14S
Any State
Pin-DT, µP-DT or DT
Pend. Receiver Res.
SN0/SP
Analog Loop Back
SN3T
State Transition Diagram NT-Repeater Mode
Pending Timing
SN0
EC-Training AL
SN1
SN3
Receicer Reset
Wait for SF AL
SN0
SN0
ARL
AR/FJ
Test
DC
DR
DC
DC
EI1
DR
T14S
DI
LSEC or T12E
BBD1
& SFD
T12S
T7S
-
-
-
-
-
-
-
T13S
TL
TL
T7S
T14E
T14S
DU or
DU or
T1E
T1E
LOF
LOF
EI1
DI
T1S,T11S
SN3/SN3T
SN3T
SN3T
SN0
SN2
SN0
SN1
SN0
IOM
TN
DC
T11E
Synchronized
EQ-Training
Transparent
ERROR S/T
Deactivated
EC-Training
Wait for SF
AR/ARL
AR/ARL
Alerting
AI/AIL
AI
®
DC
DC
PU
DC
DC
Awaked
AR or TL
175
DU or
LOF
BBD0 & FD
TIM or (DIN=0)
or (SPU=0)
LSEC or T12E
T12S
BBD0 & SFD
AI
1)
1)
1)
PU
-
-
-
-
-
-
-
-
-
LOF
dea=0
LSUE
AR or TL
dea=0
LSUE
dea=0
LSUE
T1S,
T11S
(LSEC or T12E)
DI
SN3T
SN1
Pend. Deact. U
TN
T11E
EC-Training 1
DI
Legend
Alerting 1
& DI
Operational Description
DR
DR
AR
LSU
Signal to U
T12S
CI-Code Indication (DD)
-
-
-
dea=1
State Name
Data Sheet 01.99
T1S,T11S
IN
OUT
PEB 2091
PEF 2091
-