TC1796
System Units (Vol. 1 of 2)
Peripheral Control Processor (PCP)
User’s Manual 11-70 V2.0, 2007-07
PCP, V2.0
11.10.12 PCP Service Request Control Registers, PCP_SRC[11:9]
Service request nodes for interrupt bus 1 (PCP interrupt arbitration bus) with suspended
interrupt capability.
PCP_SRCx (x = 9-11)
PCP Service Request Control Register x
(FC
H
-x*4
H
) Reset Value: 0000 1400
H
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
0 RRQ 0 SRCN
rrh r rh
1514131211109876543210
0SRR
SRE
= 1
TOS
= 01
0SRPN
rrhr r r rh
Field Bits Type Description
SRPN [7:0] rh PCP Node x Service Request Priority Number
This number is automatically set by the PCP if it
needs to place a service request on interrupt bus 0
(CPU interrupt arbitration bus) or 1 (PCP interrupt
arbitration bus).
When the PCP interrupt request contained was
raised by the PCP Processor Core when executing
an EXIT instruction then this bit field contains the
SRPN value taken from R6 when the exit instruction
was executed. When the PCP interrupt request was
raised by the PCP Processor Core when suspending
execution of a channel program in order to service a
higher-priority interrupt then this bit field contains the
CPPN value of the PCP when the interrupt was
suspended.
TOS [11:10] r PCP Node x Type-of-Service State
Always read as 01
B
. This means TOS is associated
with interrupt bus 1 (PCP interrupt arbitration bus).
SRE 12 r PCP Node x Service Request Enable
Always read as 1 (enabled).
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