psf21911 ETC-unknow, psf21911 Datasheet - Page 43

• Manufacturer Part Number: psf21911
• Description: Isdn Echocancellation Circuit Terminal Applications Iec-q
• Manufacturer: ETC-unknow

Table 6
Super
Frame #
1
2,3…
– ISW
– SW
– CRC Cyclic Redundancy Check
– EOC Embedded Operation Channel
– ACT
– DEA
– CSO Cold Start Only
– UOA U-Only Activation
– SAI
– FEBE Far-end Block Error
– PS1
– PS2
– NTM NT-Test Mode
– AIB
– NIB
Semiconductor Group
Inverted Synchronization Word (quad):
Synchronization Word (quad):
Activation bit
Deactivation bit
S-Activity Indicator
Power Status Primary Source
Power Status Secondary Source
Alarm Indication Bit
Network Indication Bit
Positions
Positions
Frame #
Basic
Quat
U-Frame Structure
Bit
1
2
3
4
5
6
7
8
Framing 2B + D
1 – 18
Word
1 – 9
Sync
ISW
SW
SW
SW
SW
SW
SW
SW
2B + D
2B + D EOCa1 EOCa2 EOCa3
2B + D
2B + D EOCi3
2B + D EOCi6
2B + D EOCa1 EOCa2 EOCa3
2B + D
2B + D EOCi3
2B + D EOCi6
10 –
19 –
117
234
EOC
EOC
118
235
d/m
d/m
M1
43
a
d/m
i
ACT
DEA
CSO
UOA
SAI
FEBE = (0) –> Far-end block error occurred
PS1
PS2
NTM
AIB
NIB
EOCi1
EOCi4
EOCi7
EOCi1
EOCi4
EOCi7
LT- to NT dir. >
118
236
M2
= address bit
= data / message bit
= information (data / message)
= (1) –> Layer 2 ready for communication
= (0) –> LT informs NT that it will turn off
= (1) –> NT-activation with cold start only
= (0) –> U-only activated
= (0) –> S-interface is deactivated
= (1) –> Primary power supply ok
= (1) –> Secondary power supply ok
= (0) –> NT busy in test mode
= (0) –> Interruption (according to ANSI)
= (1) –> no function
Overhead Bits (M1 – M6)
– 3 – 3 + 3 + 3 + 3 – 3 + 3 – 3 – 3
+ 3 + 3 – 3 – 3 – 3 + 3 – 3 + 3 + 3
EOCi2
EOCi5
EOCi8
EOCi2
EOCi5
EOCi8 AIB / NIB CRC11 CRC12
119
237
M3
(reserved for network use)
1/ NTM
1/ CSO
1/ PS2
UOA /
DEA /
ACT/
ACT
PS1
119
238
SAI
M4
1
/
CRC1
CRC3
CRC5
CRC7
CRC9
U-Transceiver
< NT- to LT dir.
120
239
M5
1
1
PSB 21911
PSF 21911
CRC10
CRC2
CRC4
CRC6
CRC8
FEBE
120
240
M6
11.97
1