ARM CoreLink GIC-600AE User Manual

Arm
®
CoreLink™ GIC-600AE Generic Interrupt Controller
Technical Reference Manual
Document ID: 101206_0003_04_en
Issue: 04
Signal descriptions
A.7 Interblock AXI4-Stream interface signals
The GIC-600AE Distributor uses AXI4-Stream interfaces to communicate with the other GIC
components.
The following table shows the GIC-600AE interblock signals.
Signal definitions
Table A-8: Interblock AXI4-Stream signals
Distributor to Redistributor AXI4-Stream interface, icdp bus
Signal Direction Description
icdptready Input
icdptvalid Output
icdptdata[<ppi_stream_data_width>−1:0] Output
icdptlast Output
AXI4-Stream compliant bus for communication between the Distributor and
a Redistributor. The interface is fully credited and can be sent over any free-
flowing interconnect.
The signal width is set using the ppi_stream_data_width configuration
option.
icdptwakeup Output Registered wake signal to indicate that a message is arriving or is about to arrive
on the icdp bus
icdptkeep[(<ppi_stream_data_width>/8)−1:0] Output Indicates the data bytes that must be transferred. This signal is only present on
the Distributor.
icdptdest[variable:0] Output Specifies the destination Redistributor block. This signal is only present on the
Distributor.
Redistributor to Distributor AXI4-Stream interface, icpd bus
Signal Direction Description
icpdtready Input
icpdtvalid Output
icpdtdata[<gic_stream_width>−1:0] Output
icpdtlast Output
AXI4-Stream compliant bus for communication between a Redistributor and the
Distributor. The interface is fully credited and can be sent over any free-flowing
interconnect.
The signal width is set using the gic_stream_width configuration option.
icpdtwakeup Output Registered wake signal to indicate that a message is arriving or is about to arrive on
the icpd bus
icpdtkeep[(<gic_stream_width>/8)−1:0] Output Indicates the data bytes that must be transferred. This signal is only present on the
Redistributor.
icpdtid[variable:0] Output Specifies the source Redistributor block. This signal is only present on the Distributor,
so the system must provide an icpdtid signal.
Distributor to ITS AXI4-Stream interface, icdi bus
Signal Direction Description
icditready Input
icditvalid Output
icditdata[<its_stream_data_width>−1:0] Output
icditlast Output
AXI4-Stream compliant bus for communication from the Distributor to an ITS. The
interface is fully credited and can be sent over any free-flowing interconnect.
The signal width is set using the its_stream_data_width configuration
option.
icditwakeup Output Indicates that a message is arriving or is about to arrive on the icdi bus
icditkeep[(<its_stream_data_width>/8)−1:0] Output Indicates the data bytes that must be transferred. This signal is only present on
the Distributor.
icditdest[variable:0] Output Specifies the destination ITS block. This signal is only present on the Distributor.
Copyright © 2018–2020, 2022 Arm Limited (or its affiliates). All rights reserved.
Non-Confidential
Page 260 of 268

ARM CoreLink GIC-600AE Specifications

General

Brand	ARM
Model	CoreLink GIC-600AE
Category	Controller
Language	English