EFM32WG Datasheet, PDF (177/834 Pages) List of Unclassifed Manufacturers – The EFM32WG Wonder Gecko is the ideal choice for demanding 8-, 16-, and 32-bit energy sensitive applications.

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to operation. Read and write signals are shown in Figure 14.5 (p. 177) and Figure 14.6 (p. 177)
respectively.
Figure 14.5. EBI Multiplexed 16-bit Data, 16-bit Address Read Operation
ADDRSETUP RDSETUP
(1, 2, 3, ...)
(0, 1, 2, ...)
RDSTRB
(1, 2, 3, ...)
RDHOLD
(0, 1, 2, ...)
EBI_AD[ 15:0]
ADDR[ 16:1]
Z
DATA[ 15:0]
Z
EBI_ALE
EBI_CSn
EBI_REn
Figure 14.6. EBI Multiplexed 16-bit Data, 16-bit Address Write Operation
ADDRSETUP ADDRHOLD
(1, 2, 3, ...)
(0, 1, 2, ...)
WRSETUP
(0, 1, 2, ...)
WRSTRB
(1, 2, 3, ...)
WRHOLD
(0, 1, 2, ...)
EBI_AD[ 15:0]
ADDR[ 16:1]
DATA[ 15:0]
Z
EBI_ALE
EBI_CSn
EBI_WEn
14.3.3 Multiplexed 8-bit Data, 24-bit Address Mode
This mode allows 24-bit address with 8-bit data multiplexed on the EBI_AD lines. The upper 8 bits of
the EBI_AD lines are consecutively used for the highest 8 bits and the lowest 8 bits of the address. The
lower 8 bits of the EBI_AD lines are used for the middle 8 address bits and for data. This mode is set
by programming the MODE field in the EBI_CTRL register to D8A24ALE. Read and write signals are
shown in Figure 14.7 (p. 177) and Figure 14.8 (p. 178) respectively.
Figure 14.7. EBI Multiplexed 8-bit Data, 24-bit Address Read Operation
EBI_AD[ 15:8]
ADDRSETUP
(1, 2, 3, ...)
RDSETUP
(0, 1, 2, ...)
ADDR[ 23:16]
RDSTRB
(1, 2, 3, ...)
ADDR[ 7:0]
RDHOLD
(0, 1, 2, ...)
Z
EBI_AD[ 7:0]
ADDR[ 15:8]
Z
DATA[ 7:0]
Z
EBI_ALE
EBI_CSn
EBI_REn
2013-05-08 - Wonder Gecko Family - d0233_Rev0.50
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