EP7211 Datasheet, PDF (100/166 Pages) Cirrus Logic – HIGH-PERFORMANCE ULTRA-LOW-POWER SYSTEM-ON-CHIP WITH LCD CONTROLLER

EP7211
High-Performance Ultra-Low-Power System-on-Chip with LCD Controller
Table 5-4. Values of the Bus Width Field (cont.)
Bus Width
Field
BOOTBIT1 BOOTBIT0
Expansion Transfer
Mode
Port E bits 1,0 during
NPOR reset
11
1
0
8-bit wide bus access
High, Low
The table below show the values for the wait states for random and sequential wait states at 13 and
18 MHz bus rates.
Table 5-5. Values of the Wait State Field at 13 MHz and 18 MHz
Value
00
01
10
11
No. of Wait States
Random
4
3
2
1
No. of Wait States
Sequential
3
2
1
0
At 36 MHz bus rate, the encoding becomes more complex:
Table 5-6. Values of the Wait State Field at 36 MHz
Bit 3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
Bit 2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
Bit 1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
Bit 0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
Wait States
Random
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
Wait States
Sequential
3
3
3
3
2
2
2
2
1
1
1
1
0
0
0
100
Register Descriptions
DS352PP3
JUL 2001