Hardware implementation
Issue C
37
Serial ATA
Serial ATA (SATA) support is provided on the PROTEUS module using a Silicon Image
(SiI3132) PCI Express SATA controller. The SiI3132 supports two independent Serial ATA
ports with generation 2 transfer rates of 3.0GB/s and is compliant with the Serial ATA 1.0
specification. The Serial ATA ports are interfaced via the COM Express board-to-board
connector. in the standalone implementation only port is available via a Serial ATA
connector.
Solid state hard disk
The PROTEUS module supports a soldered down solid state FLASH disk with boot
support. This is interfaced via the IDE bus and provides options for 2GB and 4GB NAND
flash devices. The Intel Z-P140 PATA solid state disk is used for this function.
LPC
The SCH implement an LPC interface which is routed to COM Express connector.
RTC
The SCH Real Time Clock (RTC) module provides a battery backed-up date and time
keeping device. Three interrupt features are available: time of day alarm with once a
second to once a month range, periodic rates of 122 ms to 500 ms, and end of update
cycle notification. Backup power options for the RTC are described in
on page
.
Serial ports
The SMSC SCH3114 provides four fully functional NS16C550 compatible serial ports on
the PROTEUS board. It supports up to 1.5MBaud data rates and 16-Byte Send/Receive
FIFO’s.
The serial ports are used to interface to the Bluetooth module or NanoZigBee module,
GPS module and touch screen controller. One serial port is used to provide RS232
interface on board header.
Port
Function
COM1 RS232
COM2 Touchscreen
COM3
Bluetooth OR ZigBee OR ZIF connector
COM4
GPS or ZIF connector
