mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 318
mpc823rg
Manufacturer Part Number
mpc823rg
Description
Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MPC823RG.pdf
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Freescale Semiconductor, Inc.
External Bus Interface
13.4.2.2 SINGLE BEAT WRITE FLOW. The basic write cycle begins with a bus arbitration,
followed by the address transfer and the data transfer. The handshakes are illustrated in
Figure 13-6, Figure 13-7, Figure 13-8, and Figure 13-9 as applicable to the fixed transaction
protocol.
MASTER
SLAVE
REQUEST BUS (BR)
RECEIVES BUS GRANT (BG) FROM ARBITER
ASSERTS BUS BUSY (BB) IF NO OTHER MASTER IS DRIVING
ASSERT TRANSFER START (TS)
DRIVES ADDRESS AND ATTRIBUTES
RECEIVES ADDRESS
DRIVES DATA
RECEIVES DATA
ASSERTS TRANSFER ACKNOWLEDGE (TA)
STOPS DRIVING DATA
Figure 13-6. Basic Flow Diagram of a Single Beat Write Cycle
MPC823 REFERENCE MANUAL
MOTOROLA
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