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Prepared
Manfred Ortmann
Approved
2.2.3 CPU
The CPU MB91F467DA from Fujitsu ( U500 ) is used. External 2x 1 Gbit Flash Memory ( U580,
U581 ), 128Mx16 SDRAM ( U591 ) and 512kx16 SRAM ( U592 ) are connected.
The mode pins of the CPU MD_2 and MD_1 are set fixed to logical '0'.
The logical level of mode pin MD_0 can be set with switch SW500.
If the switch is open the MD_0 pin is logical '1'. If the switch is closed the MD_0 pin is logical
'0'.
MD[2:0] = '000' : Internal ROM Vector mode, Reset vector access: internal Flash.
This is the standard setting where the internal Flash memory of the device is available.
( see Hardware Manual MB91460 Serie Chapter 9 Reset 4.3 MD: Mode Pins )
MD[2:0] = '001' : External ROM Vector mode, Reset vector access: external.
Preliminary
Document Number
Checked
Date
2008-05-14
Revision
Storage
PA 3.5
Mycable01
11(36)
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