r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 408
r8a77850anbg
Manufacturer Part Number
r8a77850anbg
Description
Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R8A77850ANBG.pdf
(1692 pages)
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11. Local Bus State Controller (LBSC)
Rev.1.00 Jan. 10, 2008 Page 378 of 1658
REJ09B0261-0100
Bit
27
26 to 24 ADH
23
22 to 20 RDS
Bit Name
⎯
⎯
Initial
Value
0
111
0
111
R/W
R
R/W
R
R/W
Description
Reserved
This bit is always read as 0. The write value should
always be 0.
Address Hold Cycle
These bits specify the number of cycles to be inserted
as the address hold time with respect to CSn negation.
(Only valid when the SRAM interface, byte control
SRAM interface, or burst ROM interface is selected.)
000: No cycle inserted
001: 1 cycle inserted
010: 2 cycles inserted
011: 3 cycles inserted
100: 4 cycles inserted
101: 5 cycles inserted
110: 6 cycles inserted
111: 7 cycles inserted
Reserved
This bit is always read as 0. The write value should
always be 0.
RD Setup Cycle (CSn Assertion–RD Assertion Delay
Cycle)
These bits specify the number of cycles to be inserted
as the time from CSn assertion to RD assertion. (Only
valid only when the SRAM interface, byte control SRAM
interface, or burst ROM interface is selected.)
000: No cycle inserted (1 cycle delayed)
001: 1 cycle inserted (2 cycles delayed)
010: 2 cycles inserted (3 cycles delayed)
011: 3 cycles inserted (4 cycles delayed)
100: 4 cycles inserted (5 cycles delayed)
101: 5 cycles inserted (6 cycles delayed)
110: 6 cycles inserted (7 cycles delayed)
111: 7 cycles inserted (8 cycles delayed)
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