External Bus Interface
MPC561/MPC563 Reference Manual, Rev. 1.2
9-50
Freescale Semiconductor
Figure 9-35. Basic Flow of an External Master Read Access
External Master
1. Request Bus (
BR
)
2. Receives Bus Grant (
BG
) From Arbiter
3. Asserts Bus Busy (
BB
) if No Other Master is Driving
4. Assert Transfer Start (
TS
)
1. Receives Address
1. Returns Data
1. Asserts Transfer Acknowledge (
TA
)
1. Receives Data
Address in Internal
Memory Map
No
Yes
Asserts CSx
If In Range
Memory
Controller
MPC500 Device
5. Drives Address and Attributes
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...