Datasheet

Chip Select Module
MOTOROLA MCF5206e USER’S MANUAL 9-3
9.2.1.3 ADDRESS BUS. The address bus includes 24 dedicated address signals,
A[23:0], and supports as many as four additional address signals, A[27:24]. The chip
select or default memory address appears only on the pins configured to be address
signals. The maximum size of a memory bank is limited by the number of address signals
available (see Table 9-2).
.
For transfers initiated by the ColdFire core, the MCF5206e outputs the address and
increments the lower bits during burst transfers, allowing the address bus to be directly
LONGWORD
8-BIT
001
000111
010111
100111
110111
100
000111
010111
100111
110111
16-BIT
010
000011
100011
100
000011
100011
32-BIT 0/1 00000000
LINE
8-BIT
001
000111
010111
100111
110111
111
000111
010111
100111
110111
16-BIT
010
000011
100011
111
000011
100011
32-BIT
0 00000000
1 11000000
Table 9-1. Data Bus Byte Write Enables
TRANSFER SIZE PORT SIZE BURST SIZ[1] SIZ[0] A1 A0
WE0
WE1 WE2 WE3
D[31:24] D[23:16] D[15:8] D[7:0]
Fr
eescale S
emiconduct
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Freescale Semiconductor, Inc.
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