PXD20RM Datasheet, PDF (1125/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

Table 30-9 details the status bit encodings.
Table 30-9. Read/Write Access Status Bit Encoding
Read Action
Read access has not completed
Read access error has occurred
Read access completed without error
Not allowed
Write Action
Write access completed without error
Write access error has occurred
Write access has not completed
Not allowed
ERR DV
0
0
1
0
0
1
1
1
30.6.2.6 Read/Write Access Address (RWA)
The read/write access address register provides the system bus address to be accessed when initiating a
read or a write access.
Nexus 0x0009
Reg:
Access: User read/write
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
R
RWA[0-15]
W
Reset ₀
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
R
RWA[16-31]
W
Reset ₀
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 30-9. Read/Write Access Address Register (RWA)
30.6.2.7 Read/Write Access Data (RWD)
The read/write access data register provides the data to/from system bus memory-mapped locations when
initiating a read or a write access.
Freescale Semiconductor
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
30-13