Information

Address
Address Data
TSIZ = 11
AA=1
AA=0
AA=1
AA=0
Data Data Data
Add+1 Add+2 Add+3
FB_CLK
FB_A[Y]
FB_D[X]
FB_RW
FB_TS
FB_ALE
FB_CSn
FB_OEn
FB_BE/BWEn
FB_TA
FB_TSIZ[1:0]
29.4.12.4 32-bit-Write burst to 8-Bit port 3-1-1-1 (no wait states)
The following figure shows a 32-bit write to an 8-bit external chip with burst enabled.
The transfer results in a 4-beat burst and the data is driven on FB_AD[31:24]. The
transfer size is driven at 32-bit (00b) throughout the bus cycle.
Note
The first beat of any write burst cycle has at least one wait state.
If the bus cycle is programmed for zero wait states
(CSCRn[WS] = 0b), one wait state is added. Otherwise, the
programmed number of wait states are used.
Functional description
K20 Sub-Family Reference Manual, Rev. 1.1, Dec 2012
680
Preliminary
Freescale Semiconductor, Inc.
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