Section 11 Local Bus State Controller (LBSC)
Rev.1.00 Dec. 13, 2005 Page 334 of 1286
REJ09B0158-0100
Bit Bit
Name
Initial
Value R/W Description
26
DPUP
0
R/W
Data Pin Pull-Up Resistor Control
Specifies the pull-up resistor state of the data pins (D31
to D0). This bit is initialized by a power-on reset. The
pins are not pulled up when access is performed or
when the bus is released, even if the pull-up resistor is
on.
0: Cycles in which the pull-up resistors of the data pins
(D31 to D0) are turned on are inserted before and
after a memory access.
*
1: Pull-up resistor is off for data pins (D31 to D0).
Note:
*
We recommend that a pull-up resistor be
externally connected to the data pins if it is
required.
25
0
R
Reserved
This bit is always read as 0. The write value should
always be 0.
24
OPUP
0
R/W
Control Output Pin Pull-Up Resistor Control
Specifies the pull-up resistor state (A25 to A0,
BS
,
CS0
to
CS2
,
CS4
to
CS6
,
RD
/
FRAME
,
WE
, R/
W
,
CE2A
, and
CE2B
) when the control output pins are high-
impedance. This bit is initialized by a power-on reset.
0: Pull-up resistors are on for control output pins (A25 to
A0,
BS
,
CS0
to
CS2
,
CS4
to
CS6
,
RD
/
FRAME
,
WE
,
R/
W
,
CE2A
, and
CE2B
)
1: Pull-up resistors are off for control output pins (A25 to
A0,
BS
,
CS0
to
CS2
,
CS4
to
CS6
,
RD
/
FRAME
,
WE
,
R/
W
,
CE2A
, and
CE2B
)
23 to 20 DACKBST
[3:0]
All 0
R/W
DACK Burst
Select the assert period of
DACK0
to
DACK3
signals.
0:
DACK
signals asserted in synchronization with the
bus cycle.
1:
DACK
signals remain asserted from burst start to end
in DMA burst transfer mode
Only set to 1 when the area of a
DACK
assertion in
DMA transfer is the PCMCIA interface memory area,
otherwise this bit should be cleared to 0.
DACKBST[3]:
DACK3
DACKBST[2]:
DACK2
DACKBST[1]:
DACK1
DACKBST[0]:
DACK0
Содержание SH7780 Series
Страница 2: ...Rev 1 00 Dec 13 2005 Page ii of l ...
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Страница 82: ...Section 1 Overview Rev 1 00 Dec 13 2005 Page 32 of 1286 REJ09B0158 0100 ...
Страница 122: ...Section 3 Instruction Set Rev 1 00 Dec 13 2005 Page 72 of 1286 REJ09B0158 0100 ...
Страница 146: ...Section 4 Pipelining Rev 1 00 Dec 13 2005 Page 96 of 1286 REJ09B0158 0100 ...
Страница 196: ...Section 6 Floating Point Unit FPU Rev 1 00 Dec 13 2005 Page 146 of 1286 REJ09B0158 0100 ...
Страница 292: ...Section 9 L Memory Rev 1 00 Dec 13 2005 Page 242 of 1286 REJ09B0158 0100 ...
Страница 450: ...Section 11 Local Bus State Controller LBSC Rev 1 00 Dec 13 2005 Page 400 of 1286 REJ09B0158 0100 ...
Страница 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
Страница 674: ...Section 15 Clock Pulse Generator CPG Rev 1 00 Dec 13 2005 Page 624 of 1286 REJ09B0158 0100 ...
Страница 692: ...Section 16 Watchdog Timer and Reset Rev 1 00 Dec 13 2005 Page 642 of 1286 REJ09B0158 0100 ...
Страница 726: ...Section 18 Timer Unit TMU Rev 1 00 Dec 13 2005 Page 676 of 1286 REJ09B0158 0100 ...
Страница 1004: ...Section 24 Multimedia Card Interface MMCIF Rev 1 00 Dec 13 2005 Page 954 of 1286 REJ09B0158 0100 ...
Страница 1032: ...Section 25 Audio Codec Interface HAC Rev 1 00 Dec 13 2005 Page 982 of 1286 REJ09B0158 0100 ...
Страница 1070: ...Section 26 Serial Sound Interface SSI Module Rev 1 00 Dec 13 2005 Page 1020 of 1286 REJ09B0158 0100 ...
Страница 1104: ...Section 27 NAND Flash Memory Controller FLCTL Rev 1 00 Dec 13 2005 Page 1054 of 1286 REJ09B0158 0100 ...
Страница 1150: ...Section 28 General Purpose I O GPIO Rev 1 00 Dec 13 2005 Page 1100 of 1286 REJ09B0158 0100 ...
Страница 1184: ...Section 29 User Break Controller UBC Rev 1 00 Dec 13 2005 Page 1134 of 1286 REJ09B0158 0100 ...
Страница 1266: ...Section 31 Electrical Characteristics Rev 1 00 Dec 13 2005 Page 1216 of 1286 REJ09B0158 0100 ...
Страница 1328: ...Appendix Rev 1 00 Dec 13 2005 Page 1278 of 1286 REJ09B0158 0100 ...
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