8.1.2 AXI Subsystem

The AXI subsystem is comprised of:

• CSS — CPU System and Security matrix
• CHS — CPU High Speed matrix
• APS — APB Client matrix
• AXM — AXI Hosts matrix
• ISS — Image Subsystem

AXI matrixes are based on NIC-400 r1p1 (by Arm Ltd.) and no settings are controlled by software. The respective hardware configurations used are described in the following sections. The default software configuration has been intensively tested and leads to best results in any conditions.

For complete details on the NIC-400 design, see the Arm specification on http://infocenter.arm.com/help/topic/com.arm.doc.ddi0475h/index.html

The device embeds Quality of Service management provided by Arm QoS-400 supplement to NIC-400. QoS-400 r1p1 is controlled by software. The respective hardware configurations used are described in the following sections. The default software configuration has been intensively tested and leads to best results in any conditions.

For complete details on the QoS-400, see the Arm specification on http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dsu0026g/index.html

This AXI subsystem (NICGPV) is connected to peripherals and to an AHB matrix (MATRIX) described below.

The following tables summarize the AXI matrix hosts and clients.