15. Buses
Note 1. The CSPWWAIT[2:0] value is valid only when the PWENB bit in CSnMOD is set to 1.
Note 2. The CSPRWAIT[2:0] value is valid only when the PRENB bit in CSnMOD is set to 1.
b20 to b16
Normal Write Cycle Wait Select
b20
b16
0 0 0 0 0: No wait is inserted.
0 0 0 0 1: Wait with a length of 1 clock cycle is inserted.
0 0 0 1 0: Wait with a length of 2 clock cycles is inserted.
0 0 0 1 1: Wait with a length of 3 clock cycles is inserted.
0 0 1 0 0: Wait with a length of 4 clock cycles is inserted.
0 0 1 0 1: Wait with a length of 5 clock cycles is inserted.
0 0 1 1 0: Wait with a length of 6 clock cycles is inserted.
0 0 1 1 1: Wait with a length of 7 clock cycles is inserted.
0 1 0 0 0: Wait with a length of 8 clock cycles is inserted.
0 1 0 0 1: Wait with a length of 9 clock cycles is inserted.
0 1 0 1 0: Wait with a length of 10 clock cycles is inserted.
0 1 0 1 1: Wait with a length of 11 clock cycles is inserted.
0 1 1 0 0: Wait with a length of 12 clock cycles is inserted.
0 1 1 0 1: Wait with a length of 13 clock cycles is inserted.
0 1 1 1 0: Wait with a length of 14 clock cycles is inserted.
0 1 1 1 1: Wait with a length of 15 clock cycles is inserted.
1 0 0 0 0: Wait with a length of 16 clock cycles is inserted.
1 0 0 0 1: Wait with a length of 17 clock cycles is inserted.
1 0 0 1 0: Wait with a length of 18 clock cycles is inserted.
1 0 0 1 1: Wait with a length of 19 clock cycles is inserted.
1 0 1 0 0: Wait with a length of 20 clock cycles is inserted.
1 0 1 0 1: Wait with a length of 21 clock cycles is inserted.
1 0 1 1 0: Wait with a length of 22 clock cycles is inserted.
1 0 1 1 1: Wait with a length of 23 clock cycles is inserted.
1 1 0 0 0: Wait with a length of 24 clock cycles is inserted.
1 1 0 0 1: Wait with a length of 25 clock cycles is inserted.
1 1 0 1 0: Wait with a length of 26 clock cycles is inserted.
1 1 0 1 1: Wait with a length of 27 clock cycles is inserted.
1 1 1 0 0: Wait with a length of 28 clock cycles is inserted.
1 1 1 0 1: Wait with a length of 29 clock cycles is inserted.
1 1 1 1 0: Wait with a length of 30 clock cycles is inserted.
1 1 1 1 1: Wait with a length of 31 clock cycles is inserted.
R/W
b23 to b21
—
Reserved
These bits are read as 0. The write value should be 0.
R/W
b28 to b24
Normal Read Cycle Wait Select
b28
b24
0 0 0 0 0: No wait is inserted.
0 0 0 0 1: Wait with a length of 1 clock cycle is inserted.
0 0 0 1 0: Wait with a length of 2 clock cycles is inserted.
0 0 0 1 1: Wait with a length of 3 clock cycles is inserted.
0 0 1 0 0: Wait with a length of 4 clock cycles is inserted.
0 0 1 0 1: Wait with a length of 5 clock cycles is inserted.
0 0 1 1 0: Wait with a length of 6 clock cycles is inserted.
0 0 1 1 1: Wait with a length of 7 clock cycles is inserted.
0 1 0 0 0: Wait with a length of 8 clock cycles is inserted.
0 1 0 0 1: Wait with a length of 9 clock cycles is inserted.
0 1 0 1 0: Wait with a length of 10 clock cycles is inserted.
0 1 0 1 1: Wait with a length of 11 clock cycles is inserted.
0 1 1 0 0: Wait with a length of 12 clock cycles is inserted.
0 1 1 0 1: Wait with a length of 13 clock cycles is inserted.
0 1 1 1 0: Wait with a length of 14 clock cycles is inserted.
0 1 1 1 1: Wait with a length of 15 clock cycles is inserted.
1 0 0 0 0: Wait with a length of 16 clock cycles is inserted.
1 0 0 0 1: Wait with a length of 17 clock cycles is inserted.
1 0 0 1 0: Wait with a length of 18 clock cycles is inserted.
1 0 0 1 1: Wait with a length of 19 clock cycles is inserted.
1 0 1 0 0: Wait with a length of 20 clock cycles is inserted.
1 0 1 0 1: Wait with a length of 21 clock cycles is inserted.
1 0 1 1 0: Wait with a length of 22 clock cycles is inserted.
1 0 1 1 1: Wait with a length of 23 clock cycles is inserted.
1 1 0 0 0: Wait with a length of 24 clock cycles is inserted.
1 1 0 0 1: Wait with a length of 25 clock cycles is inserted.
1 1 0 1 0: Wait with a length of 26 clock cycles is inserted.
1 1 0 1 1: Wait with a length of 27 clock cycles is inserted.
1 1 1 0 0: Wait with a length of 28 clock cycles is inserted.
1 1 1 0 1: Wait with a length of 29 clock cycles is inserted.
1 1 1 1 0: Wait with a length of 30 clock cycles is inserted.
1 1 1 1 1: Wait with a length of 31 clock cycles is inserted.
R/W
b31 to b29
—
Reserved
These bits are read as 0. The write value should be 0.
R/W
Bit
Symbol
Bit Name
Description
R/W