Section 11 Local Bus State Controller (LBSC)
Rev.1.00 Dec. 13, 2005 Page 358 of 1286
REJ09B0158-0100
In the case where the SRAM interface is set, the
RD
signal, which can be used as
OE
, and write
control signals
WE0
to
WE3
are asserted.
For the number of bus cycles, 0 to 25 wait cycles inserted by CS1WCR can be selected.
When the burst ROM interface is used, a burst pitch number in the range of 0 to 7 is selectable
with bits BW2 to BW0 in CS1BCR.
Any number of wait cycles can be inserted in each bus cycle through the external wait pin (
RDY
).
(When the insert number is 0, the
RDY
signal is ignored.)
The setup time and hold time (cycle number) of the address and
CS1
signals to the read and write
strobe signals can be set within a range of 0 to 7 cycles by CS1WCR. The
BS
hold cycles can be
set within a range of 0 to 1 when the number for the read and write strobe setup wait is 1 or more.
(3) Area
2
For area 2, physical address bits 28 to 26 are 010.
The interfaces that can be set for this area are the SRAM, burst ROM, MPX and DDR-SDRAM
interfaces.
When the SRAM interface is used, a bus width of 8, 16, or 32 bits is selectable with bits SZ in
CS2BCR. When the MPX interface is used, a bus width of 32 bits should be selected through bits
SZ in CS2BCR.
When area 2 is accessed, the
CS2
signal is asserted (except for DDR-SDRAM area).
In the case where the SRAM interface is set, the
RD
signal, which can be used as
OE
, and write
control signals
WE0
to
WE3
are asserted.
For the number of bus cycles, 0 to 25 wait cycles inserted by CS2WCR can be selected.
Any number of wait cycles can be inserted in each bus cycle through the external wait pin (
RDY
).
(When the insert number is 0, the
RDY
signal is ignored.)
The setup time and hold time (cycle number) of the address and
CS2
signals to the read and write
strobe signals can be set within a range of 0 to 7 cycles by CS2WCR. The
BS
hold cycles can be
set within a range of 0 to 1 when the number for the read and write strobe setup wait is 1 or more.
When using area 2 for the DDR-SDRAM interface, set the AREASEL bit in MMSELR. Then the
CS2
signal is not asserted. When the DDR-SDRAM is used, see section 12, DDR-SDRAM
Interface (DDRIF).
Summary of Contents for SH7780 Series
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Page 82: ...Section 1 Overview Rev 1 00 Dec 13 2005 Page 32 of 1286 REJ09B0158 0100 ...
Page 122: ...Section 3 Instruction Set Rev 1 00 Dec 13 2005 Page 72 of 1286 REJ09B0158 0100 ...
Page 146: ...Section 4 Pipelining Rev 1 00 Dec 13 2005 Page 96 of 1286 REJ09B0158 0100 ...
Page 196: ...Section 6 Floating Point Unit FPU Rev 1 00 Dec 13 2005 Page 146 of 1286 REJ09B0158 0100 ...
Page 292: ...Section 9 L Memory Rev 1 00 Dec 13 2005 Page 242 of 1286 REJ09B0158 0100 ...
Page 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
Page 674: ...Section 15 Clock Pulse Generator CPG Rev 1 00 Dec 13 2005 Page 624 of 1286 REJ09B0158 0100 ...
Page 692: ...Section 16 Watchdog Timer and Reset Rev 1 00 Dec 13 2005 Page 642 of 1286 REJ09B0158 0100 ...
Page 726: ...Section 18 Timer Unit TMU Rev 1 00 Dec 13 2005 Page 676 of 1286 REJ09B0158 0100 ...
Page 1032: ...Section 25 Audio Codec Interface HAC Rev 1 00 Dec 13 2005 Page 982 of 1286 REJ09B0158 0100 ...
Page 1150: ...Section 28 General Purpose I O GPIO Rev 1 00 Dec 13 2005 Page 1100 of 1286 REJ09B0158 0100 ...
Page 1184: ...Section 29 User Break Controller UBC Rev 1 00 Dec 13 2005 Page 1134 of 1286 REJ09B0158 0100 ...
Page 1266: ...Section 31 Electrical Characteristics Rev 1 00 Dec 13 2005 Page 1216 of 1286 REJ09B0158 0100 ...
Page 1328: ...Appendix Rev 1 00 Dec 13 2005 Page 1278 of 1286 REJ09B0158 0100 ...
Page 1336: ...Rev 1 00 Dec 13 2005 Page 1286 of 1286 REJ09B0158 0100 ...
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