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Target Board Information
STMicroelectronics STm8000 Demo board(mb379)
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STm8000 Demo Board
This board was designed primarily for silicon validation. All the functionality of the chip
is available, and the chip is socketed.
| Board name | STm8000 Demo board |
| Board Id | mb379 |
| Chip | stm8000 |
| Target CPU | ST40-103 |
| Memory | 64Mb |
| Flash | 16Mb |
| STEM connector | Yes |
| On board Ethernet | No |
Hardware Setup
Serial ports
| Panel name |
Schematic name |
Type |
Chip name |
Device |
Cable type for console |
| RS232 | J11 | ASC | UART1 | /dev/ttyAS1 | Straight |
EMI Config
Ethernet STEM
These jumper settings are required for correct operation of the DB558 Ethernet STEM
| Jumper # |
Function Description |
Position |
| J1 | Chip select configuration: use STEM NOT_CS0 |
2-3 |
| J2 | Ethernet interrupt: 0 |
2-3 |
| J3 |
Ethernet NOT_CS select: use decoded NOT_CS |
2-3 |
| J4 |
USB NOT_CS select: use decoded NOT_CS |
2-3 |
| J5 |
MII supply voltage is +3.3V |
1-2 |
| J6 |
EEPROM word size is 16 bit |
2-3 |
| J7 |
USB interrupt |
Not fitted |
The 16 bit modification must be done
Known problems
The UDMA hard disk interface has the read and write signals reversed. This can
be fixed by swapping the signals in the cable.
This is most easy done using a 40 pin cable. At the host end of the cable,
unclip the plastic retaining clip from the IDC connector, and cut
the cable between pins 22 and 23 and 25 and 26. This should allow you to
lift just these three pins off the IDC contacts, twist it, so that pins
23 and 25 are swapped, and push it back over the contacts. Check that the
pins are making good contact, and replace the retaining clip. If you don't
get a good contact, it may be necessary to trim the end of the cable, and
replace the IDC connector.
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