SM320VC5510A-EP Datasheet, PDF (23/82 Pages) Texas Instruments – SM320VC5510A-EP Fixed-Point Digital Signal Processor

Functional Overview
3.1.5 Memory Map
Byte Address^† (Hex)
000000
010000
050000
Memory Blocks
DARAM^‡
(8 blocks)
SARAM^§
(32 blocks)
External^¶ − CE0
Block Length
65,536 bytes
262,144 bytes
3,866,624 bytes
400000
External^¶ − CE1
4,194,304 bytes
800000
External^¶ − CE2
4,194,304 bytes
C00000
External^¶ − CE3
4,161,536 bytes
FF8000
FFFFFF
ROM^#
if MP/MC=0
(1 block)
External^¶ − CE3 _{32,768 bytes}
if MP/MC=1
† _{Address shown represents the first byte address in each block.}
‡ _{Dual-access RAM (DARAM): two accesses per cycle per block, 8 blocks of 8K bytes.}
§ _{Single-access RAM (SARAM): one access per cycle per block, 32 blocks of 8K bytes.}
¶ _{External memory spaces are selected by the chip-enable signal shown (CE[0:3]).}
Supported memory types include: asynchronous, synchronous DRAM (SDRAM), and
synchronous burst SRAM (SBSRAM).
# _{Read-only memory (ROM): one access every two cycles, one block of 32K bytes.}
Figure 3−2. 320VC5510 Memory Map
3.1.6 Bootloader
The on-chip bootloader provides a method to transfer application code and tables from an external source to
the on-chip RAM at power up. The 5510 provides several options to download the code to accommodate
varying system requirements. These options include:
• Enhanced Host-Port Interface (EHPI) boot
• External memory boot from 8-/16-/32-bit-wide asynchronous memory
• Serial slave boot from McBSP0 with 8- or 16-bit element length
• Serial EEPROM boot from McBSP0 in 8-bit SPI format
External pins BOOTM3, BOOTM2, BOOTM1, and BOOTM0 select the boot configuration. The values of
BOOTM[2:0] are latched with the rising edge of the RESET input. BOOTM[0] is shared with general-purpose
IO1. BOOTM[1] is shared with general-purpose IO2. BOOTM[2] is shared with general-purpose IO3.
The boot configurations available are summarized in Table 3−4. For detailed information on the bootloader
functions, refer to the Using the TMS320VC5510 Bootloader Application Report (literature number
SPRA763).
August 2003 − Revised November 2003
SGUS045A
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