6.2.1. Signal descriptions

Figure 6.3Table 6.3 shows signal descriptions for the external ROM module.

Table 6.3. Signal descriptions for the external ROM module

Signal

Type

Direction

Description

A[13:0]

External address

Input

The external address input.

Q[7:0]

External data out

Output

The external data bus, driven during read transfers.

CEn

Chip enable

Input

When LOW this signal indicates that the chip has been selected and must respond to the current transfer.

OEn

Output enable

Input

When LOW this signal indicates a read transfer, and enables the module to drive data onto Q.

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