Arm
®
CoreLink™ GIC-600AE Generic Interrupt Controller
Technical Reference Manual
Document ID: 101206_0003_04_en
Issue: 04
Components and configuration
Table 3-1: AXI4-Stream input interface descriptions
Bus Destination Width ic<xy>dtid
ICID ITS to Distributor 16-bit or 64-bit ITS number
ICPD Redistributor to Distributor 16-bit, 32-bit, or 64-bit Redistributor number
ICCD SPI Collator to Distributor 16-bit 0
ICRD Remote chip to Distributor 64-bit 0
The following table lists the AXI4-Stream output interfaces.
Table 3-2: AXI4-Stream output interface descriptions
Bus Destination Width ic<xy>dtdest
ICDI Distributor to ITS 16-bit or 64-bit ITS number
ICDP Distributor to Redistributor 16-bit, 32-bit, or 64-bit Redistributor number
ICDC Distributor to SPI Collator 16-bit 0
ICDR Distributor to remote chip 64-bit Programmed value
ICDW Distributor to Wake Request block 16-bit -
Each bus has an associated ic<xy>twakeup signal that requests wakeup through the qactive signals
when the Distributor, or destination block, is hierarchically clock gated through the Q-Channel. The
ic<xy>twakeup input signal must be driven from a cleanly registered version of the ic<xy>tvalid
signal to prevent spurious wakeups caused by signal glitches.
For information about the Distributor Q-Channels, see 3.1.4 Distributor Q-Channels on page
29.
3.1.2 Distributor ACE-Lite subordinate interface
The AMBA
®
ACE-Lite subordinate port on the GIC-600AE Distributor provides access to the
entire register map except for the GITS_TRANSLATER register. The interface supports 64-bit, 128-
bit, or 256-bit data widths.
The GIC-600AE only accepts single beat accesses of the sizes for each register that are shown in
the programmers model, see 5. Programmers model on page 95. All other accesses are rejected
and given either an OKAY or SLVERR response that is based on the GICT_ERR0CTLR.UE bit.
When the GIC-600AE is a monolithic configuration without MSI-64 support, the Distributor and
ITS both share an ACE-Lite subordinate port, and the DeviceID for the ITS translation is taken from
the awuser_s[did_width+2:3] signal. The value of the did_width parameter is set during silicon
integration. For more information about the ITS, see 3.3 Interrupt Translation Service on page
34.
The a<x>user_s[2:0] signals are not used and must be tied LOW.
The following table shows the acceptance capabilities of the Distributor ACE-Lite subordinate
interface.
Copyright © 2018–2020, 2022 Arm Limited (or its affiliates). All rights reserved.
Non-Confidential
Page 27 of 268
To Next Page
Loading...