11. Local Bus State Controller (LBSC)
Rev.1.00 Jan. 10, 2008 Page 375 of 1658
REJ09B0261-0100
Bit Bit
Name
Initial
Value
R/W Description
9, 8
SZ
11
R/W
*
Bus
Width
In CS0BCR, the external pins (MODE5 and MODE6) to
specify the bus size are sampled at a power-on reset.
When using the MPX interface, set these bits to 00 or
11. When using the byte control SRAM interface, set
these bits to 00, 10 or 11.
00: 64 bits (can be specified when the MODE 12 and
MODE 11 pins are set to 1 and 0 respectively.)
01: 8 bits
10: 16 bits
11: 32 bits
Note:
*
The SZ bits in CS0BCR are read-only. When
area 0 is set to the MPX interface by the
MODE7 pin, the SZ bits in CS0BCR should be
set to 00 or 11.
7 RDSPL
1 R/W
RD
Hold Cycle
Specifies the number of cycles to be inserted in the
hold time for the read data sample timing of
RD
. When
setting this bit to 1, specify the number of
RD
negation-
CSn
negation delay cycles set by the RDH bit in
CSnWCR as 1 or more. Also the
RD
negation-
CSn
negation delay cycle is reduced 1 cycle when this bit is
set to 1 (valid only when the SRAM interface, burst
ROM interface, or byte control SRAM interface is
selected).
0: No hold cycle inserted
1: 1 hold cycle inserted
Содержание SH7781
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Страница 1482: ...28 General Purpose I O Ports GPIO Rev 1 00 Jan 10 2008 Page 1452 of 1658 REJ09B0261 0100 ...
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