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Section 12 Bus State Controller (BSC)
Rev. 4.00 Sep. 14, 2005 Page 382 of 982
REJ09B0023-0400
12.5.9 Burst
MPX-I/O
Interface
Figure 12.42 shows an example of a connection between the LSI and an MPX device. Figures
12.43 to 12.46 show the burst MPX space access timings.
Area 6 can be specified as the address/data multiplex I/O (MPX-I/O) interface using the TYPE2 to
TYPE0 bits in the CS6BCR register. This MPX-I/O interface enables the LSI to be easily
connected to an external memory controller chip that uses an address/data multiplexed 32-bit
single bus. In this case, the address and the access size for the MPX-I/O interface are output to
D25 to D0 and D31 to D29, respectively, in address cycles. For the access sizes of D31 to D29,
see the description of the CS6BWCR register (burst MPX-I/O). Address pins A25 to A0 are used
to output normal addresses.
In the burst MPX-I/O interface, the bus size is fixed at 32 bits. The BSZ1 and BSZ0 bits in
CS6BBCR must be specified as 32 bits.
In the MPX-I/O interface, a software wait or hardware wait can be inserted using the
WAIT
pin.
In read cycles, a wait cycle is inserted automatically following the address output even if the
software wait insertion is specified as 0.
This LSI
CS
BS
FRAME
WE
I/O31
I/O0
WAIT
CS6B
BS
FRAME
RD/
WR
D31
D0
WAIT
64k
×
16-bit
SRAM
Figure 12.42 Burst MPX Device Connection Example
Содержание HD6417641
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Страница 11: ...Rev 4 00 Sep 14 2005 Page xi of l USB Universal serial bus WDT Watch dog timer...
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Страница 228: ...Section 6 Power Down Modes Rev 4 00 Sep 14 2005 Page 178 of 982 REJ09B0023 0400...
Страница 246: ...Section 8 X Y Memory Rev 4 00 Sep 14 2005 Page 196 of 982 REJ09B0023 0400...
Страница 318: ...Section 11 User Break Controller UBC Rev 4 00 Sep 14 2005 Page 268 of 982 REJ09B0023 0400...
Страница 454: ...Section 12 Bus State Controller BSC Rev 4 00 Sep 14 2005 Page 404 of 982 REJ09B0023 0400...
Страница 500: ...Section 13 Direct Memory Access Controller DMAC Rev 4 00 Sep 14 2005 Page 450 of 982 REJ09B0023 0400...
Страница 504: ...Section 14 U Memory Rev 4 00 Sep 14 2005 Page 454 of 982 REJ09B0023 0400...
Страница 566: ...Section 17 Compare Match Timer CMT Rev 4 00 Sep 14 2005 Page 516 of 982 REJ09B0023 0400...
Страница 734: ...Section 18 Multi Function Timer Pulse Unit MTU Rev 4 00 Sep 14 2005 Page 684 of 982 REJ09B0023 0400...
Страница 868: ...Section 21 A D Converter Rev 4 00 Sep 14 2005 Page 818 of 982 REJ09B0023 0400...
Страница 914: ...Section 23 I O Ports Rev 4 00 Sep 14 2005 Page 864 of 982 REJ09B0023 0400...
Страница 956: ...Section 24 List of Registers Rev 4 00 Sep 14 2005 Page 906 of 982 REJ09B0023 0400...
Страница 1016: ...Section 25 Electrical Characteristics Rev 4 00 Sep 14 2005 Page 966 of 982 REJ09B0023 0400...
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