AM4011
Functional Description
ID 1022-1626, Rev. 1.0
Page 2 - 5
P R E L I M I N A R Y
2.2.4
Power Monitor and Reset Generation
All onboard voltages on the AM4011 are supervised, which guarantees controlled power-up of
the board. This is done by activating a stable power-up reset signals after the threshold voltag-
es have been passed.
2.2.5
FLASH Memory
There are three Flash interfaces available as described below, two for the BIOS and one for
the optional USB 2.0 NAND Flash module.
2.2.5.1
BIOS FLASH (Firmware Hub)
The AM4011 provides two redundant Firmware Hub Flash chips (2 x 1 MB). The fail-over
mechanism for the BIOS recovery can be controlled via the MMC controller or the DIP switch.
If one Firmware Hub Flash is corrupted, the MMC can enable the second Firmware Hub Flash
and boot the system again.
The Firmware Hub Flash includes a hardware write protection option, which can be configured
via the BIOS. If write protection is enabled, the Firmware Hub Flash cannot be written to.
2.2.5.2
USB 2.0 NAND Flash Module
The AM4011 supports up to 8 GB of USB 2.0 NAND Flash memory in combination with an op-
tional USB 2.0 NAND Flash module, which is connected to the onboard connector J6.
The USB 2.0 NAND Flash module is a USB 2.0 based NAND Flash drive with a built-in full hard-
disk emulation and a high data transfer rate (sustained read rate with up to 25 MB/sec and sus-
tained write rate with up to 20 MB/sec). It is optimized for embedded systems providing high-
performance, reliability and security.
Содержание AM4011
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Страница 17: ...AM4011 Introduction ID 1022 1626 Rev 1 0 Page 1 1 Introduction Chapter 1 1 P R E L I M I N A R Y...
Страница 59: ...AM4011 Installation ID 1022 1626 Rev 1 0 Page 3 1 Installation Chapter 1 3 P R E L I M I N A R Y...
Страница 69: ...AM4011 Configuration ID 1022 1626 Rev 1 0 Page 4 1 Configuration Chapter 1 4 P R E L I M I N A R Y...