External Bus Interface (EBI)
MPC5566 Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor 12-71
Figure 12-48 shows a 32-bit read from an external master in 16-bit data bus mode.
Figure 12-48. External Master 32-bit Read from MCU with DBM = 1
Receive bus grant and bus busy
negated for second cycle
Assert BB drive address
and assert TS
Using the internal arbiter
CLKOUT
BR (Input)
RD_WR
TSIZ[0:1]
BDIP
BG
BB
ADDR[8:31]
DATA[0:15]
TS
(Input)
Minimum
two wait states
DATA is valid
TA (Output)
‘00’
DATA is valid
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