PEB22554 SIEMENS [Siemens Semiconductor Group], PEB22554 Datasheet - Page 223

• Manufacturer Part Number: PEB22554
• Description: ICs for Communications
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

is skipped) or a positive slip (one frame or one half of the current buffer size is read out
twice) is performed at the system interface, depending on the difference between RCLK
and the current working clock of the receive backplane interface. i.e. on the position of
pointer R and W within the memory. A positive / negative slip is indicated in the interrupt
status bits ISR3.RSP and ISR3.RSN.
Figure 49
The Receive Elastic Buffer as Circularly Organized Memory
Semiconductor Group
S+, S-
W :
R
:
:
Frame 2 Time Slots
Write Pointer (Route Clock controlled)
Read Pointer (System Clock controlled)
Limits for Slip Detection (mode dependent)
R
S-
223
R’
W
S+
Slip
Frame 1 Time Slots
Moment of Slip Detection
Functional Description T1 / J1
ITD10952
PEB 22554
09.98