9.6.2.9
MEMSMTMGRk - Static memory timing registers
Each of these 3 registers define a complete set of timing parameters for static
memories.
MEMSMTMGRk can be assigned to each chip select, that is associated with
external static memory by the chip select dedicated mask register bits
MEMSMSKR.REGSEL[2:0].
Access
These registers can be read/written in 32-bit units.
Address
•
MEMSMTMGR0: <MemC_Base> + 94
H
•
MEMSMTMGR1: <MemC_Base> + 98
H
•
MEMSMTMGR2: <MemC_Base> + 9C
H
Initial Value
•
MEMSMTMGR0: 0007 FFFF
H
•
MEMSMTMGR1: 007F FFFF
H
•
MEMSMTMGR2: 001C 114C
H
These registers are initialized by any reset.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
0
0
0
1
a
0
0
PAGESIZE
[1:0]
PAGE
MOD
E
TPRC[3:0]
TBTA[2:0]
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
TWP[5:0]
TWR[1:0]
TAS[1:0]
TRC[5:0]
R/W
R/W
R/W
R/W
a
The default value "0" of bit 28 must be changed to "1" after any reset.
Writing to the read-only bits is ignored, reading returns undefined values.
Caution
1.
Bit 28 of MEMSMTMGRk must be set to "1" after reset and must
not be altered afterwards.
2.
The default value "0" of bits 26 to 29 must not be changed.
Bit
Bit name
Function
28
bit 28
The default value "0" of this bit must be changed to "1" after reset and must not be altered
afterwards.
25 to 24
PAGESIZE
PAGESIZE defines the size of a page of page mode suuporting static memory devices,
i.e. if PAGEMODE = 1.
00
B
4-word page
01
B
8-word page
10
B
16-word page
11
B
32-word page
23
PAGEMODE
PAGEMODE defines whether the static memory device supports page mode access.
0
device does not support page mode (default)
1
device supports page mode
External Memory Interface Controller
Chapter 9
Preliminary User's Manual S19203EE1V3UM00
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