peb3456e Infineon Technologies Corporation, peb3456e Datasheet - Page 130

• Manufacturer Part Number: peb3456e
• Description: Channelized T3 Termination, With Ds3 Framer, M13 Multiplexer, T1/e1 Framers And 256-channel Hdlc/ppp Controller
• Manufacturer: Infineon Technologies Corporation

4.13.1.4 Channel Interrupts
Channel interrupt are divided into two subtypes:
• Receive Interrupt I and Transmit Interrupt I
• Receive Interrupt II and Transmit Interrupt II
Subtype I contains interrupts which indicate the general status of a channel. These
interrupts are not linked to a descriptor.
Subtype II contains interrupts which indicate a channel or packet status that is linked to
a descriptor. Each interrupt vector contains a descriptor ID which can be used for
tracking purposes.
Receive Interrupt I
•
ROFP
SF
IFFL
IFID
Data Sheet
ROFP SF
31
15
1
30
14
01
B
IFFL IFID
29
13
Receive Buffer Overflow
The ’Receive Buffer Overflow’ interrupt vector is generated, when one or
more whole frames or short frames or changes of interframe time-fill
(HLDC, PPP) or data in general (TMA) has been discarded due to the
inaccessibility of the internal receive buffer.
Short Frame Detected
The ’Short Frame Detected’ interrupt vector is generated, when the
receiver detected a frame which length matches the condition defined in
CONF1.SFL.
Interframe Time-fill Flag
The ’Interframe Time-fill Flag’ interrupt vector is generated, when the
receiver detected a interframe time-fill change from FF
Interframe Time-fill Idle
The ’Interframe Time-fill Idle’ interrupt vector is generated, when the
receiver detected a interframe time-fill change from 7E
28
12
00
B
SFD
27
11
26
0
QUEUE(2:0)
0
24
0
130
0
7
0
0
CHAN(7:0)
0
Functional Description
0
H
H
to 7E
to FF
0
PEB 3456 E
H
H
0
.
.
05.2001
0
0