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MMC2107 - Freescale Semiconductor

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<strong>Freescale</strong> <strong>Semiconductor</strong>, Inc.<br />

External Bus Interface Module (EBI)<br />

Operand Transfer<br />

Table 19-2. Data Transfer Cases<br />

Transfer<br />

Size<br />

Port<br />

Width<br />

TSIZ1<br />

External Pins<br />

TSIZ0 A1 A0<br />

Data Bus Transfer<br />

16<br />

D[31:24] — — —<br />

0 0<br />

32 D[31:24] — — —<br />

nc...<br />

<strong>Freescale</strong> <strong>Semiconductor</strong>, I<br />

Byte<br />

Half-word<br />

Word<br />

16<br />

— D[23:16] — —<br />

0 1<br />

32 — D[23:16] — —<br />

0 1<br />

16<br />

— — D[31:24] —<br />

1 0<br />

32 — — D[15:8] —<br />

16<br />

— — — D[23:16]<br />

1 1<br />

32 — — — D[7:0]<br />

16<br />

D[31:24] D[23:16] — —<br />

0 0<br />

32 D[31:24] D[23:16] — —<br />

1 0<br />

16<br />

— — D[31:24] D[23:16]<br />

1 0<br />

32 — — D[15:8] D[7:0]<br />

16 (1)<br />

0<br />

0 0 D[31:24] D[23:16] — —<br />

1 0 1 0 — — D[31:24] D[23:16]<br />

32 0 0 0 D[31:24] D[23:16] D[15:8] D[7:0]<br />

1. The EBI runs two cycles for word accesses to 16-bit ports. The table shows the data<br />

placement for both bus cycles.<br />

<strong>MMC2107</strong> – Rev. 2.0<br />

Technical Data<br />

MOTOROLA External Bus Interface Module (EBI) 509<br />

For More Information On This Product,<br />

Go to: www.freescale.com

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