PXD10RM Datasheet, PDF (645/1332 Pages) Freescale Semiconductor, Inc – PXD10 Microcontroller

memory banks. Additionally, it includes fields that provide specific information for the two separate AHB
ports (p0 and p1). The register is described below in Figure 17-44 and Table 17-64.
Offset 0x01C
Access: Read/write
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
R
B02_APC
W
B02_WWSC
B02_RWSC
B02_R
WWC
Reset 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 1
16 17 18 19 20
R
W
B02_R
WWC
B02_P1_BCFG
B02_P
1_DPF
E
B02_P
1_IPF
E
21 22
B02_P1_PFLM
23 24
B02_P B02_R
1_BFE WWC
25 26
B0_P0_BCFG
27 28
B02_P B02_P
0_DPF 0_IPF
E
E
29
30
31
B02_P0_PFLM
B02_P
0_BFE
Reset 1 0 0 1 0 0 1 1 1 1 1 0 1 1 0 1
Figure 17-44. PFLASH Configuration Register 0 (PFCR0)
Table 17-64. PFLASH Configuration Register 0 Field Descriptions
Field
B02_APC
Description
Bank0+2 Address Pipelining Control. This field is used to control the number of cycles between flash
array access requests. This field must be set to a value appropriate to the operating frequency of the
PFLASH. The required settings are documented in Table 17-70. Higher operating frequencies require
non-zero settings for this field for proper flash operation. This field is set to 0b00010 by hardware
reset.
00000
00001
00010
...
11110
11111
Accesses may be initiated on consecutive (back-to-back) cycles
Access requests require one additional hold cycle
Access requests require two additional hold cycles
Access requests require 30 additional hold cycles
Access requests require 31 additional hold cycles
B02_WWSC
Bank0+2 Write Wait State Control. This field is used to control the number of wait-states to be added
to the flash array access time for writes. This field must be set to a value appropriate to the operating
frequency of the PFLASH. The required settings are documented in Table 17-70. Higher operating
frequencies require non-zero settings for this field for proper flash operation. This field is set to
0b00010 by hardware reset.
00000 No additional wait-states are added
00001 1 additional wait-state is added
00010 2 additional wait-states are added
...
111111 31 additional wait-states are added
Freescale Semiconductor
PXD10 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
17-95