TMS320DM6431 datasheet(73/227 Pages) TI1

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3.4.2.3 DSPBOOTADDR Register

TMS320DM6431

Digital Media Processor

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SPRS342C – NOVEMBER 2006 – REVISED JUNE 2008

RESERVED

ERR

R/W-0000 0000 0000

R/W-0000

RESERVED

R/W-0000 0000 0000 0000

LEGEND: R = Read; W = Write; -n = value after reset

Figure 3-4. BOOTCMPLT Register— 0x01C4 000C

Table 3-10. BOOTCMPLT Register Description

Bit

Field Name

Description

31:20

RESERVED Reserved. For proper device operation, the user should only write "0" to these bits.

Boot Error

0000 = No Error (default).

19:16

ERR

0001 - 1111 = bootloader software detected a boot error and aborted the boot. For the error codes, see the

Using the TMS320DM643x Bootloader Application Report (literature number SPRAAG0).

15:0

RESERVED Reserved. For proper device operation, the user should only write "0" to these bits.

The DSP Boot Address (DSPBOOTADDR) register contains the starting address for the C64x+ CPU.

Whenever the C64x+ is released from reset, it begins executing from the location pointed to by

DSPBOOTADDR register. Software can leave the DSPBOOTADDR register at default.

The DSPBOOTADDR register is reset by any device-level global reset. For the list of device-level global

resets, see Section 6.5, Reset.

DSPBOOTADDR

R/W-0x0010 0000 or 0x4200 00000

LEGEND: R = Read; W = Write; -n = value after reset

Figure 3-5. DSPBOOTADDR Register— 0x01C4 0008

Table 3-11. DSPBOOTADDR Register Description

Bit

Field Name

Description

DSP Boot Address

After boot, the C64x+ CPU begins execution from this 32-bit address location. The lower 10 bits

(bits 9:0) should always be programmed to "0" as they are ignored by the C64x+. The default

value of the DSPBOOTADDR depends on the boot mode selected.

31:0

DSPBOOTADDR

The DSPBOOTADDR defaults to 0x0010 0000 when the Internal Bootloader ROM is used.

The DSPBOOTADDR defaults to 0x4200 0000 when EMIFA CS2 Space is used.

For the boot mode selections, see Table 3-5, Non-Fastboot Modes; Table 3-6, Fixed-Multiplier

Fastboot Modes; and Table 3-7, User-Select Multiplier Fastboot Modes.

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