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MAC7200 Datasheet(PDF) 430 Page - Freescale Semiconductor, Inc

Part # MAC7200
Description  MAC7200 Microcontroller Family Reference Manual
PDF  976 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MAC7200 Datasheet(HTML) 430 Page - Freescale Semiconductor, Inc

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FlexBus Differences from MAC71xx
MAC7200 Microcontroller Family Reference Manual, Rev. 2
352
Freescale Semiconductor
Supervisor Access: Unused
17.5.2
FlexBus Interface
In addition to the IPI interface, the FlexBus can also abort external bus transfers. The following transfers
will be aborted:
•
Transfers to an external bus address which does not map into any chip select address range
17.6
FlexBus Differences from MAC71xx
•
The FlexBus interface has numerous small differences from the EIM. Please refer to the respective
Block Guides for differences in programming interface and protocol.
— Changed offset of registers from $0080 to $0000
— Changed max number of wait states from 15 to 63
— Added Secondary Wait State functionality (SWS, SWSEN bits in the CSCR)
— Added Extended Transfer Start functionality (EXTS bit in the CSCR)
— Added Address Setup and Hold functionality (ASET, RDAH, WDAH bits in the CSCR)
— Added Multiplexed address Mode (MUX bit in the CSCR)
Table 17-9. FlexBus Bus Aborts
Abort
Allowed
$0000-$3fff
None
Table 17-10. MAC71x1 to MAC72xx External Bus mapping
MAC71x1
MAC72xx
A[21:0]
ADDR[21:0]
D[15:0]
DATA[15:0]
CS0
CS0
CS1
CS1
CS2
CS2
OE
OE
BS0
BWE0
BS1
BWE1
RW
RW
CLKOUT
CLKOUT
TA
TA
AS
-
-
TBST



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