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Target Board Information
STMicroelectronics STx7200 cut 2 MBoard (mb671)
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| Board name | STx7200 cut 2 Processor Board |
| Board Id | mb671 |
| Chip | STx7200 cut 2 |
| Target CPU | ST40-300 |
| Memory | 2x256Mb |
| Flash | 32Mb |
| STEM connector | Yes |
| On board Ethernet | on-chip |
The mb671 is the STx7200 cut 2 processor board for the STx7200 MBoard.
It can be used stand-alone, or plugged into an application specific
motherboard (mb520 is an obvious example, as it is usually shipped
together with mb671).
Hardware Setup
Serial ports
| Panel name |
Schematic name |
Type |
Chip name |
Device |
Cable type for console |
| - | J16-1 (lower) | ASC | UART2 | /dev/ttyAS0 | Null modem |
| - | J16-2 (upper) | ASC | UART3 | /dev/ttyAS1 | Null modem |
STMC usage
The mb671 is configured using a targetpack provided with the stmc package.
The configuration name is mb671.
| EMI config | stlinux23-host-stmc-1.1.1-10 or later |
| Boot script name | mb671:st40 |
Known problems
Ethernet PHY
The on-board PHY is known to work only in RMII mode. Thus a few jumpers
need to be set:
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TP87 must be in the 1-2 position
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TP89 in 2-3 position.
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Switch SW1-7 must be on (this mode pin setting may
impact booting from NAND flash).
USB
Rev A boards are normally shipped with the incorrect configuration for USB
over-current detection. To fix this a number of solder bridges need to be
changed:
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G20, G21 and G22 need to be broken. Use a sharp knife to cut the track
between the two contects of the solder bridge.
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G17, G18 and G19 need to be made. A small solder blob between the two
contacts can be used.
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