EP7212 Datasheet, PDF (72/136 Pages) Cirrus Logic – HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER AND DIGITAL AUDIO INTERFACE(DAI)

EP7212
Bus Width Field BOOTBIT1 BOOTBIT0 Expansion Transfer Mode
00
0
0
32-bit wide bus access
01
0
0
16-bit wide bus access
10
0
0
8-bit wide bus access
11
0
0
Reserved
00
0
1
8-bit wide bus access
01
0
1
Reserved
10
0
1
32-bit wide bus access
11
0
1
16-bit wide bus access
00
1
0
16-bit wide bus access
01
1
0
32-bit wide bus access
10
1
0
Reserved
11
1
0
8-bit wide bus access
Port E bits 1,0 during
NPOR reset
Low, Low
Low, Low
Low, Low
Low, Low
Low, High
Low, High
Low, High
Low, High
High, Low
High, Low
High, Low
High, Low
Table 37. Values of the Bus Width Field
Value
00
01
10
11
No. of Wait States
Random
4
3
2
1
No. of Wait States
Sequential
3
2
1
0
Table 38. Values of the Wait State Field at 13 MHz and 18 MHz
Bit 3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
Bit 2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Bit 1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Bit 0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Wait States
Random
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
Table 39. Values of the Wait State Field at 36 MHz
Wait States
Sequential
3
3
3
3
2
2
2
2
1
1
1
1
0
0
0
0
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DS474PP1