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Spectrum Digital, Inc

2-6

TMS320C54XX Evaluation Module Technical Reference

2.2.1 Program Memory

There are two configurations for program memory. The selection of these

configurations is done by the 54X’s OVLY bit. When in OVLY mode, addresses

0x0000 - 0x8000 are internal for every page. In this mode, there are five (5) 32K word

pages of external program RAM and one (1) 32K word page of internal RAM. When in

linear mode program memory is mapped to external RAM. Shown below are the two

program memory configurations. The following three figures are for the C548 and

C549 processors, C5410 processor, and the C5402 respectively.

Hex

Overlay Mode, OVLY = 1

Linear Mode, OVLY = 0

Hex

0x000000

0x00007F

0x000080

0x007FFF

0x00FF80

0x00FFFF

0x010000

0x027FFF

0x008000

0x00FF7F

0x001FFF

0x002000

0x028000

0x05FFFF

External

Interrupts External

Reserved

DARAM

SARAM

Page 0

External RAM

Interrupts

0x000000

0x00007F

0x000080

0x001FFF

0x002000

0x007FFF

0x00FFFF

0x00FF80

0x008000

0x00FF7F

RAM

Figure 2-3A, EVM320C548/549/5409 Program Space

Page 1

Page 2

Page 3

Page 4

External RAM

0x018000

0x028000

0x038000

0x048000

0x01FFFF

0x02FFFF

0x03FFFF

0x04FFFF

RAM Images

0x37FFFF

0x060000

Jumper JP13 in 2-3 position

†

Jumper JP13 in 1-2 position

0x05FFFF

0x058000

External Page

0x37FFFF

0x060000

External RAM

RAM Images

External RAM

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 44 45

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