Programming Example; Data Access To 8-Bit Peripherals; Table 7-12 Time-Out Status Register Description - Motorola DragonBall MC9328MX1 Reference Manual

Name
TO Time-Out—This bit when set to 1 indicates a time-out event and may be
Bit 31 cleared by the user.
RW This bit contains the ips_rwb status prior to time-out event.
Bit 30
ADDR Address—These bits contains the ips_addr[11:2] status prior to time-out
Bits 29–20 event.
BE4 This bit contains the ips_byte_31_24 status prior to time-out event.
Bit 19
BE3 This bit contains the ips_byte_23_16 status prior to time-out event.
Bit 18
BE2 This bit contains the ips_byte_15_8 status prior to time-out event.
Bit 17
BE1 This bit contains the ips_byte_7_0 status prior to time-out event.
Bit 16
MODULE_EN Module Enable Status—These bits contains the module_en[15:1] status
Bits 14–1 prior to time-out event. Refer to Table 7-6 to determine which peripheral
is assigned to which module_en number. assignment of
Reserved Reserved—This bit is reserved and should read 0.
Bit 0

7.3 Programming Example

This section covers programming examples written in assembly code to illustrate the data access through
the AIPI module.

7.3.1 Data Access to 8-Bit Peripherals

The followings codes are executed with the ARM920T core set to big and little endian modes:
LDR
LDR
LDR
STRB
STRB
STRH
STR
LDRB
LDRB
LDRH
LDR
The Table 7-13 on page 7-18 illustrates the difference in the 8-bit peripheral register content.
MOTOROLA
Table 7-12. Time-Out Status Register Description
Description
r0, =0x11223344
r1, =0x55667788
r2, =8BIT_PERIPHERAL_ADDRESS
r0, [r2, #0x0]
r1, [r2, #0x1]
r0, [r2, #0x2]
r1, [r2, #0x4]
r3, [r2, #0x0]
r4, [r2, #0x1]
r5, [r2, #0x2]
r6, [r2, #0x4]
AHB to IP Bus Interface (AIPI)
Programming Example
Settings
0 = No time-out
event
1 = time-out event
0= Corresponding
module has not
timed out
1 = Corresponding
module has
timed out
7-17