Sundance SMT387 User Manual download pdf (Page 13)

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The EMIFB CE1 and CE2 space control registers should be programmed with the

value 0xFFFFFF03.

As the C60 only provides 20 address lines on its EMIFB, both CE1 & CE2 are used

to access this device. This in itself allows the direct access of 4MB. A paging

mechanism is used to select which half of the 8MB device is visible in this 4MB

window.

As the EMIFB CE1 & 2 memory spaces alias throughout the available range, the

flash device can be accessed using the address range 0x67E00000-0x681FFFFF.

This gives a 4MB continuous space.

The flash can be divided into the four logical sections shown in the following figure

(paging bit is bit 21).

Page0

(2 MBytes)

Page1

(2 MBytes)

Page1

(2 MBytes)

0x67C00000

0x67E00000

0x68000000

0x68200000

0x68400000

CE0

CE1

Page0

(2 MBytes)

Section 1

Section 2

Section 3

Section 4

Figure 2: Flash logical sections

To change the state of the page bit, you need to write to the following address as

shown (the data written are irrelevant):

Address Flash page selected

0x6C000000 Page 0 (1

and 3r

sections enabled)

0x6C000001 Page 1 (2

and 4

sections enabled)

The EMIFB CE0 space control register should be programmed with the value

0xFFF0C003.

PCI

The integrated 33MHz PCI32 bus interface of the 6415/6416 DSP is used to access

the Serial ATA host controller. For more information on the DSP PCI interface see:

TMS320C6000 DSP Peripheral Component Interconnect Reference Guide

(SPRU581).

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