peb2255 Infineon Technologies Corporation, peb2255 Datasheet - Page 175

• Manufacturer Part Number: peb2255
• Description: E1/t1/j1 Framer And Line Interface Component For Long And Short Haul Applications
• Manufacturer: Infineon Technologies Corporation

•
Figure 59
8.3.8
2
interrupt indications concerned with the reception of data:
• RPF (Receive Pool Full) interrupt, indicating that a 32-byte block of data can be read
• RME (Receive Message End) interrupt, indicating that the reception of one message
The following figure gives an example of a reception sequence, assuming that a “long”
frame (66 bytes) followed by two short frames (6 bytes each) are received.
•
Figure 60
Data Sheet
from RFIFO and the received message is not yet complete.
is completed.
FALC
System
Interface
CPU
Interface
32 byte FIFO buffers are also provided in receive direction. There are different
FALC
System
Interface
CPU
Interface
R
Receive Frame 1 (66 bytes)
32
R
HDLC Data Reception
RPF
Interrupt Driven Transmission Example
Interrupt Driven Reception Sequence Example
WR XFIFO
32 bytes
RD RFIFO
32 bytes
32
RMC
XHF
XPR
RPF
2
RF2 RF3
6
WR XFIFO
RD RFIFO
32 bytes
32 bytes
6
32
RMC
Command
175
Transmit Frame (70 bytes)
RME
XHF
Signaling Controller Operating Modes
XPR
RMC
RME
WR XFIFO
6 bytes
32
XHF + XME
RMC
RME
FALC-LH V1.3
XPR
PEB 2255
6
ITD10971
ALLS
ITD10972
RMC
2000-07