Mips Technologies Malta - 2: Serial Port Reset; Ethernet; Usb; Keyboard; Mouse; IEEE1284 Parallel Port; Floppy Disk

To Next Page

To Previous Page

Hardware Description

38 MIPS® Malta™ User’s Manual, Revision 01.07

Now select the ‘com’ port and click on the ‘Modem/ConnectionProperties’ to set the ‘baudrate’(=38400), ‘par-

ity’(=none), data bits(=8), stop bits(=1) and important select ‘use hardware ﬂow control’.

Download protocol setting in the menu area:

• Options->SystemOptions->ModemConnection->Data

Now set ‘current transfer protocol’ to ‘ASCII’, set all delays to ‘0’ and set the CR/LF options to ‘don’t translate

CR/LF’. The ﬁle to be downloaded (to Malta) is selected via the path:

• Data->SendFile

5.7.2 Serial Port Reset

The tty0 port (J6) can be used to reset the Malta Board. By default, a “Break” condition on the tty0 port for more than

10 ms will reset the board, exactly as if the reset button had been pressed. This functionality can be disabled, or the

time can be changed to a different value by programming the BRKRES register in the CBUS FPGA (see Section 3.6,

"Reset Control").

5.8 Ethernet

The Ethernet controller (U41 [8]) supports both 10base-T and 100base-TX standard on a twisted pair connection via

the rear panel connector J5. The device has an integrated PHY section and is capable of auto-negotiating the line

speed/duplex with the far end. Its MAC address is stored in the locally-connected EEPROM (U39) and must not be

altered.

Note: Only 10BASE-T is supported (100BASE-TX is not) for PCI clocking frequencies below 33.33 MHz (see Table

4.1).

See Section 4.3, "Displays / LEDs" for a description of the Ethernet LEDs, which are built into the RJ45 connector

and the on-board LEDs.

The ethernet controller supports Wake On LAN for remote wake-up. For additional information, see [8].

5.9 USB

Two host USB ports are available on a double connector (J5) on the rear edge of the board. These are controlled

through the South Bridge[6].

5.10 Keyboard / Mouse / IEEE1284 Parallel Port / Floppy Disk

These functions are provided by the Super I/O chip (U11)[9]. The PC keyboard and mouse are on a double mini-DIN

connector (J7), and the parallel (1284) port is on a 25-pin DSUB connector (J6), both on the rear board edge. The

ﬂoppy disk connector is header J21.

The parallel port also allows the user to reprogram the Flash memory, which is usually only done for production or

software upgrades. See Section 5.13, "Flash Memory".

The Super I/O supports one ﬂoppy disk, connected via a 34 wires ribbon cable (7 wires twisted, PC-style).