11-8
MB86R02 ‘Jade-D’ Hardware Manual V1.64
11.6.3 SRAM/Flash area register 0/2/4 (MCFAREA0/2/4)
Register address
BaseA 0x0040(MEM_XCS[0]),
BaseA 0x0048(MEM_XCS[2]),
BaseA 0x0050(MEM_XCS[4])
Bit No.
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Bit field name
Reserved
MASK
R/W
R/W0
R/W
Initial value
X
15 (16MB width)
Bit No.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Bit field name
Reserved
ADDR
R/W
R/W0
R/W
Initial value
X
(in order of MEM_XCS[0/2/4]) 64,32,0
Bit31-23: Reserved
Reserved bits.
Write "0" to these bits. Their read value is undefined.
Bit22-16: MASK (Address mask)
These bits set mask value of the one set to ADDR. This external bus interface masks
ADDR (masked with setting "1") and internal bus mask address according to the
specified mask to compare them. When they are matched, external bus interface
accesses to MEM_XCS[4/2/0] signal. [22:16] masks each address [26:20].
(Example)
ADDR = 00001000 (b)
MASK = 0000011 (b)
<When the device is selected>
Internal bus address (external interface address): AD = 0x10900000
Mask
ADDR & (!MASK)
= 00001000 (b)
AD [27:20] & (!MASK)
= 00001000 (b) ….. Matched, and this
device is selected
<When the device is not selected>
Internal bus address (external interface address): AD = 0x10c00000
Masking
ADDR & (!MASK)
= 00001000 (b)
AD [27:20] & (!MASK)
= 00001100 (b) ….. Unmatched, and device
is not selected
The masking selects area size; in this example, 0x10800000 - 0x10b00000 (4MB)
are selected. The bit specified "1" with masking is lost during mask processing.
These bits are invalid even if they are set to ADDR. When LSB in the example is
1 (ADDR = 00001001 (b)), the same address field is selected since it is invalid in
masking. The correlation of the size in mask setting and address field is shown
below.
0000000 (b)
→
1MB
0001111 (b)
→
16MB
0000001 (b)
→
2MB
0011111 (b)
→
32MB
Summary of Contents for MB86R02
Page 24: ...MB86R02 Jade D Hardware Manual V1 64 ...
Page 76: ...3 2 MB86R02 Jade D Hardware Manual V1 64 Figure 3 1 Memory map 1 ...
Page 77: ...3 3 MB86R02 Jade D Hardware Manual V1 64 Figure 3 2 Memory map 2 ...
Page 167: ...8 8 MB86R02 Jade D Hardware Manual V1 64 ...
Page 214: ...11 7 MB86R02 Jade D Hardware Manual V1 64 15 16 cycles initial value ...
Page 497: ...18 139 MB86R02 Jade D Hardware Manual V1 64 VSYNC is output 1 dot clock faster than HSYNC ...
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Page 682: ...22 2 MB86R02 Jade D Hardware Manual V1 00 FUJITSU PROPRIETARY AND CONFIDENTIAL ...
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