TMS320VC5416 datasheet(20/98 Pages) TI

20 / 98 page

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3.5

Memory Map

Reserved

(OVLY = 1)

External

(OVLY = 0)

Page 0 Program

Hex

Data

On-Chip

DARAM0−3

(OVLY = 1)

External

(OVLY = 0)

MP/MC= 0

(Microcomputer Mode)

MP/MC= 1

(Microprocessor Mode)

0000

007F

0080

FFFF

Interrupts

(External)

FF80

Memory-Mapped

Registers

On-Chip

DARAM0−3

(32K x 16-bit)

On-Chip

DARAM4−7

(DROM=1)

External

(DROM=0)

0080

FFFF

FF7F

0060

007F

0000

Hex

External

Scratch-Pad

RAM

005F

On-Chip ROM

(4K x 16-bit)

Interrupts

(On-Chip)

7FFF

8000

Page 0 Program

Hex

0000

007F

0080

FFFF

Reserved

(OVLY = 1)

External

(OVLY = 0)

FF80

FF7F

External

7FFF

8000

Reserved

FF00

FEFF

C000

BFFF

8000

7FFF

On-Chip

DARAM0−3

(OVLY = 1)

External

(OVLY = 0)

TMS320VC5416

Fixed-Point Digital Signal Processor

SPRS095O – MARCH 1999 – REVISED JANUARY 2005

If the ROM-only security option is selected the following restrictions apply:

• Only the on-chip ROM originating instructions can read the contents of the on-chip ROM; on-chip RAM

and external RAM originating instruction cannot read data from ROM: instead 0FFFFh is read. Code

can still branch to ROM from on-chip RAM or external program memory.

• The contents of on-chip RAM can be read by all instructions, even by instructions fetched from external

memory. To protect the internal RAM the user must never branch to external memory.

• The security feature completely disables the scan-based emulation capability of the 54x to prevent the

use of a debugger utility. This only affects emulation and does not prevent the use of the JTAG

boundary scan test capability.

• The device can be started in either microcomputer mode or microprocessor mode at reset (depends on

the MP/MC pin).

• HPI read and writes have no restriction.

The program and data memory map is shown in Figure 3-2. Address ranges for on-chip DARAM in data

memory are:

• DARAM0: 0080h-1FFFh

• DARAM1: 2000h-3FFFh

• DARAM2: 4000h-5FFFh

• DARAM3: 6000h-7FFFh

• DARAM4: 8000h-9FFFh

• DARAM5: A000h-BFFFh

• DARAM6: C000h-DFFFh

• DARAM7: E000h-FFFFh

Figure 3-2. Program and Data Memory Map

Functional Overview

TMS320VC5416 Datasheet(PDF) 20 Page - Texas Instruments

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