ZEUS Technical Manual | Detailed hardware description |
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Expansion interfaces
There are three expansion interfaces on the ZEUS: SDIO, PC/104 and CompactFlash. PC/104 and CompactFlash interfaces are connected to the PC card memory controller of the PXA270 with the use of some ‘glue logic’ implemented in a CPLD (Xilinx XC9536XL). There is a CPLD Firmware version/issue register that can be accessed at the address 0x12000000.
CPLD ver/issue register [REG0]
Byte lane |
| Most significant byte |
| Least significant byte | ||||||
Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | [7:4] | [3:0] |
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Field | - | - | - | - | - | - | - | - | VER[3:0] | ISSUE[3:0] |
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Reset | X | X | X | X | X | X | X | X | Current Version | Current Issue |
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R/W | - | - | - | - | - | - | - | - | Read Only | |
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Address |
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| 0x12000000 |
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© 2007 Eurotech Ltd Issue D | 38 |