TC1796
System Units (Vol. 1 of 2)
Peripheral Control Processor (PCP)
User’s Manual
11-63
V2.0, 2007-07
PCP, V2.0
11.10.6
PCP Interrupt Threshold Register, PCP_ITR
PCP_ITR
PCP Interrupt Threshold Control Register
(24
H
)
Reset Value: 0000 0000
H
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
0
ITL
r
rw
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
ITP
r
rw
Field
Bits
Type Description
ITP
[7:0]
rw
PCP Interrupt Threshold Service Request
Priority Number
This field contains the interrupt priority that is to be
posted to the interrupt queue associated with
interrupt bus 0 when the threshold condition is
reached (setting this value to 0 or disables the
threshold detection mechanism).
ITL
[19:16] rw
Interrupt Threshold Level
This bit field specifies the number of active interrupt
entries at which an warning interrupt should be
issued to the interrupt queue associated with
interrupt bus 0 (i.e. when the number of active port 0
interrupt requests stored in all SRCx registers
reaches this value then an interrupt is posted to
port 0 with the priority programmed into the ITP
field). When ITL is programmed to 0 or is
≥
the
number of SRCx registers that can contain port 0
interrupt requests, the threshold warning mechanism
is disabled).
0
[15:8],
[31:20]
r
Reserved
Read as 0; should be written with 0.