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TMPR3916 Datasheet(PDF) 72 Page - Toshiba Semiconductor

Part # TMPR3916
Description  32-Bit TX System RISC TX39 Family TMPR3916
PDF  225 Pages
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Manufacturer  TOSHIBA [Toshiba Semiconductor]
Direct Link  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

TMPR3916 Datasheet(HTML) 72 Page - Toshiba Semiconductor

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Chapter 2 Memory Controller (MC)
Preliminary
2-23
ROM Channel Control Register 2-4 (RCCR2-RCCR4)
Bit
313029
282726252423
222120191817
16
Name
RBA
RPM
RPWT
Bit
15
14
13
12
11
10
987
654321
0
Name
RWT
RCS
RBS
RBC
RME
RSHT
Bit
Name
Function
Reset
Value
R/W
31:20
RBA
Base Address
Designates the physical base address.
0x000
R/W
19:18
RPM
Page Mode, Page Size
Designates the page size of channel word burst page mode.
00 = Not configured for page mode
01 = 4-word burst page mode
10 = 8-word burst page mode
11 = 16-word burst page mode
00
R/W
17:16
RPWT
Page Mode Wait Time
Designates a 2-bit wait state counter in Page Mode for consecutive
burst accesses.
00 = 0 wait cycles
01 = 1 wait cycle
10 = 2 wait cycles
11 = 3 wait cycles
Designates the upper 2 bits of a 6-bit wait state counter for all other
modes except External ACK mode. External ACK mode is entered
when all bits of RPWT and RWT are set to 1. (Refer to “RWT”)
00
R/W
15:12
RWT
Normal Mode Wait Time
Designates a 4-bit wait state counter in Page Mode for single cycles
or initial burst cycle.
0000 = 0 wait cycles
0001 = 1 wait cycle
0010 = 2 wait cycles
:
:
1111 = 15 wait cycles
Designates the lower 4-bits of a 6-bit wait state counter in all other
modes except External ACK mode. External ACK mode is entered
when all bits of RPWT and RWT are set to 1.
RPWT [1:0] : RWT [3:0]
000000 = 0 wait cycles
000001 = 1 wait cycle
000010 = 2 wait cycles
:
:
011110 = 30 wait cycles
011111 = 31 wait cycles
:
:
111110 = 62 wait cycles
111111: External ACK* mode
Note: When PM=00, if setting RPWT: RWT = 0x3f, the wait number
doesn’t become the longest in ACK* output mode but the mode
becomes ACK* input
0000
R/W



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