Texas Instruments TMS320C3x 사용자 설명서
9-1
TMS320C30 and TMS320C31
External-Memory Interface
This chapter describes the ’C30 and ’C31 external-memory interface. See
Chapter 10,
Chapter 10,
Enhanced External-Memory Interface, for detailed information on
the ’C32 external bus operation.
Memories and external peripheral devices are accessible through two external
interfaces on the ’C30:
interfaces on the ’C30:
-
Primary bus
-
Expansion bus
On the ’C31, one bus, the primary bus, is available to access external memories
and peripheral devices. You can control wait-state generation, permitting access
to slower memories and peripherals, by manipulating memory-mapped control
registers associated with the interfaces and by using an external input signal.
and peripheral devices. You can control wait-state generation, permitting access
to slower memories and peripherals, by manipulating memory-mapped control
registers associated with the interfaces and by using an external input signal.
Topic
Page
9.1
Overview
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2
Memory Interface Signals
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.3
Memory Interface Control Registers
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.4
Programmable Wait States
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.5
Programmable Bank Switching
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.6
External Memory Interface Timing
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 9