GE Mini COM Express 10, Hardware Reference Manual

Page: 25 / 82

4.1.4 BIOS/UEFI Firmware
Refer to PICMG COM.0 R2.1
COM Express Module Base
Specification located at
www.picmg.org .
The mCOM10-L1500 has an on-board 8 MByte SPI Flash ROM device that holds the
BIOS/UEFI firmware load. Alternatively, the module may be configured to boot from the
Flash located on the carrier board, on either the external SPI bus or LPC bus. This is
controlled by the carrier board using the
BIOS_DIS[0:1]# straps.
UEFI Load
BIOS
DIS1# BIOS DIS0# Chipset SPI_
CS1#
Chipset SPI_
CS0# Carrier SPI_
CS# SPI_
Descriptor BIOS Entry
1 1 Module Module High Module SPI0/SPI1
1 0 Module Module High Module Carrier FWH (LPC)
0 1 Module Carrier SPIO Carrier SPI0/SPI1
0 0 Carrier Module SPI1 Module SPI0/SPI1
4.1.5 Serial ATA
Two Serial ATA (SATA) controllers, integrated into the G-Series SoC, host mass storage
units on the carrier through the COM Express connector. SATA 2.x (3 Gbps) and 3.x (6
Gbps) are supported. A combined SATA activity indicator is also provided.
4.1.6 USB
The mCOM10-L1500 provides eight G-Series SoC USB controllers to host serial links
through the COM Express connector. All ports support USB 2.0, while ports 8 and 9 also
support USB 3.0 SuperSpeed. The following table provides port mapping between the
G-Series SoC and the COM Express connector.
USB Port Assignments
Port USB Interface
Speed
0 Unused N/A
1 Unused N/A
2 mCOMe USB 2
FS, HS
3 mCOMe USB 3
FS, HS
4 mCOMe USB 4
FS, HS
5 mCOMe USB 5
FS, HS
6 mCOMe USB 6
FS, HS
7 mCOMe USB 7
FS, HS
8 mCOMe USB 0
FS, HS, SS
9 mCOMe USB 1 FS, HS, SS
4.1.7 Secure Digital or General-purpose I/O
The G-Series SoC provides a Secure Digital (SD) 3.0 compliant host controller wired
directly to the COM Express connector. Alternatively, these pins may be used as simple
general-purpose input/output (four pins each).
4.1.8 Audio
The G-Series SoC provides a basic PC speaker output, as well as a High Definition Audio
(HDA) controller wired to the COM Express connector.
System Architecture GFK-2896 Hardware Reference Manual 25
For public disclosure