Digi NS9215 Benutzerhandbuch
S E R I A L C O N T R O L M O D U L E : H D L C
Interrupt Enable register
424
Hardware Reference NS9215
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I n t e r r u p t E n a b l e r e g i s t e r
Address: 9002_9004
Use the Interrupt Enable register to enable interrupt generation on specific events.
Enable the interrupt by writing a 1 to the appropriate bit field(s).
Enable the interrupt by writing a 1 to the appropriate bit field(s).
Register
Register bit
assignment
assignment
D04
R/W
LL
0
Local loopback
Provides an internal local loopback feature. When the LL
field is set to 1, the transmit HDLC data signal is
connected to the receive HDLC data signal.
Provides an internal local loopback feature. When the LL
field is set to 1, the transmit HDLC data signal is
connected to the receive HDLC data signal.
D03:00
N/A
Reserved
N/A
N/A
Bits
Access
Mnemonic
Reset
Description
13
12
11
10
9
8
7
6
5
4
3
2
1
0
15
14
31
29
28
27
26
25
24
23
22
21
20
19
18
17
16
30
Reserved
TBC
Reserv
ed
Not used
VCRC RABORT
HINT
Reserv
ed
OFLOW ICRC
RXCLS
RBC TX_IDLE RX_IDLE
Bits
Access
Mnemonic
Reset
Description
D31:22
R/W
Not used
0
Write this field to 0.
D21
R/W
HINT
0
Enable HDLC interrupt
Enables interrupt generation directly from the HDLC
module. This is normally handled by hardware.
Enables interrupt generation directly from the HDLC
module. This is normally handled by hardware.
D20
N/A
Reserved
N/A
N/A
D19
R/W
OFLOW
0
Enable overflow error
Enables interrupt generation if the 4-character FIFO in the
HDLC overflows.
Enables interrupt generation if the 4-character FIFO in the
HDLC overflows.
Note:
This should not happen in a properly configured
system.
system.
D18
R/W
ICRC
0
Enable invalid CRC
Enables interrupt generation when a frame is received with
an invalid CRC.
an invalid CRC.
D17
R/W
VCRC
0
Enable valid CRC
Enables interrupt generation when a frame is received with
a valid CRC.
Enables interrupt generation when a frame is received with
a valid CRC.