Specifications

Hardware Description
ARM DUI 0447J Copyright © 2009-2014, ARM. All rights reserved. 2-13
ID052914 Non-Confidential
UARTs Four UARTs are implemented with PL011 PrimeCells incorporated into
the baseboard FPGA. See UART on page 4-37.
User Switches and LEDs
You can access the two physical user switches, SW[1] and SW[2], and
eight user LEDs on the motherboard from your applications.
• SW[1] is normally used to run the Boot Monitor boot script.
• SW[2] is a hardware enable switch for remote UART0 control.
SW[2] is not normally used by your application. See the ARM
®
Versatile
™
Express Configuration Technical Reference Manual.
The two physical user switches and eight user LEDs can assist you to
debug applications by setting application options or displaying status
information. See User Switch Register on page 4-10 and LED Register on
page 4-11.
Watchdog The ARM SP805 Watchdog module can apply a reset to a system in the
event of a software failure. See Watchdog on page 4-40.
Figure 2-4 shows the IO interfaces using the ARM Legacy memory map, see Memory maps on
page 4-3.
Figure 2-4 Architectural block diagram of IO FPGA using the ARM Legacy memory map
Figure 2-5 on page 2-14 shows the IO interfaces using the ARM Cortex-A Series memory map,
see Memory maps on page 4-3.
User LEDS
Video SRAM
NOR FLASH 0
User SRAM
USB
Ethernet
NOR FLASH 1
Compact
Flash
2 x KMI
SD/MMC
AACI
4 x UART
MMB Mux
Matrix, multiplexers,
and bridges
I/O FPGA
CS0
Peripherals
PCIe I2C
Motherboard
Configuration
Controller
DVI
MMB
CS7
CS1
CS2
CS3
CS3
CS3
Site 1 Site 2Site 1 Site 2
SB_GCLK
MMB1 to
Site 1
MMB2 to
Site 2
CB
SMB1 to
Site 1
SMB1 to
Site 2
Interrupts and
DMA control