pef2256e Infineon Technologies Corporation, pef2256e Datasheet - Page 217
pef2256e
Manufacturer Part Number
pef2256e
Description
E1/t1/j1 Framer And Line Interface Component For Long- And Short-haul Applications
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PEF2256E.pdf
(518 pages)
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Figure 82
The activities at both serial and CPU interface during frame transmission (supposed
frame length = 70 bytes) shown in
Figure 83
User’s Manual
Hardware Description
FALC
System
Interface
CPU
Interface
R
Interrupt Driven Data Transmission (flow diagram)
Interrupt Driven Transmission Example
WR XFIFO
Command
XTF/XHF
32 bytes
XHF
XPR
WR XFIFO
32 bytes
N
N
Figure
32
Command
XTF/XHF
Write Data
(up to 32
to XFIFO
Command
Transmit Frame (70 bytes)
217
83.
Transmit
Pool Ready
End of
Message
XHF
START
END
?
?
Signaling Controller Operating Modes
Y
Y
+ XME
bytes)
XPR
WR XFIFO
6 bytes
32
XPR Interrupt,
XFW Bit in SIS Register
XHF + XME
DS1.1, 2003-10-23
PEF 2256 H/E
or
XPR
ITD08565
6
ITD10971
ALLS
FALC
= 1
®
56
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