PEB2085 SIEMENS [Siemens Semiconductor Group], PEB2085 Datasheet - Page 271

• Manufacturer Part Number: PEB2085
• Description: ISDN SubscribernAccess Controller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Frame Relationship in TE-Mode
The relationship between the S/T-interface and the IOM-interface in TE IOM-1 mode is shown
in figure 111. The pin X2 provides the M-bit during bits 0 through 23 and 26 through 31 of an
IOM-frame. It is recommended to sample the state of the M-bit with the falling edge of FSC 1.
At bit positions 24 and 25, the D-ECHO-bits appear according to the PEB 2085 functionality.
Figure 111
Frame Relationship in TE-Mode
Parameter
S-interface to IOM-delay
IOM-interface to S-delay
1)
Semiconductor Group
FSC(O)
X2(O)
IDP0(O)
t
Internal delays are dependent on temperature, V
after evaluation.
ISD
0
1
0
M i
D F L.
L.
B1
NT to TE
B1
M i+1
B2
E D A F N
t
SID
A
B2
E
DD
271
Symbol
t
t
SID
ISD
and fabrication parameters. The values may be reduced
E
D
Mi+2
M
B1
Limit Values
121 s
B1
M i+1
4 s
Electrical Characteristics
B2
E D S
300 ns
300 ns
1)
1)
B2
260 ns (jitter)
260 ns (jitter)
E
E
M
D
i+1
ITD03738
L. F L.
M
i+2