Mips Technologies Malta - Serial Ports; 1: File Download; Table 5.4 Serial Port Pinouts

To Next Page

To Previous Page

5.7 Serial Ports

MIPS® Malta™ User’s Manual, Revision 01.07 37

5.7 Serial Ports

There are 2 serial ports (tty0 and tty1) on Malta which are available on the rear edge via standard, male DB9 connec-

tors (J6). These ports are provided by the Super I/O. A third serial port (tty2) is available via a 10-pin header (J22).

This port is provided by the discrete 16550. The pinout of these connectors is shown below:

Each port is electrically identical, with the pinout shown in the table below allowing full hardware handshaking.

The following 5-wire symmetric wired cable must be used to guarantee correct operation of the hardware ﬂow con-

trol, which is used by YAMON. Pin connections between the two, 9-pole male connectors (for a standard PC serial

port):

• 2 to 3 (RXD to TXD)

• 3 to 2 (TXD to RXD)

• 5 to 5 (GND to GND)

• 7 to 8 (RTS to CTS)

• 8 to 7 (CTS to RTS)

5.7.1 File Download

The recommended data terminal program for PCs running Windows OS is Procomm Plus32 from DATASTORM

TECHNOLOGIES. Here is the setup sequence for simple Motorola S-record ﬁle downloads:

Communication settings in the menu area:

• Options->SystemOptions->ModemConnection->System

Table 5.4 Serial Port Pinouts

PIN NO (DB9) PIN NO (10-pin) Name Direction

1 1 CD Input

2 3 RXD Input

3 5 TXD Output

4 7 DTR Output

5 9 GND

6 2 DSR Input

7 4 RTS Output

8 6 CTS Input

9 8 RI Input

10 No Connect