TMF8801 datasheet(57/73 Pages) OSRAM

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TMF8801

Datasheet

• PUBLIC

DS000648

• v10-00 • 2022-Dec-20

│ 56

8.10.3

BL_DATA (Address 0x0A-0x8A)

Figure 111:

BL_DATA Register

Addr: 0x0A-0x8A

BL_DATA

Field

Name

Rst

Type

Description

7:0

bl_data0 … bl_data127

Up to 128 data bytes for bootloader

commands

8.10.4

BL_CSUM (Address 0x8B)

Figure 112:

BL_CSUM Register

Addr: 0x8B

BL_CSUM

Field

Name

Rst

Type

Description

7:0

bl_csum

Checksum for Sum(Command + Data Size +

Data itself) XOR 0xFF

8.10.5

Bootloader Commands

The following commands (bl_cmd_stat) are supported by the bootloader:

Command

Value

Meaning

RAMREMAP_RESET

0x11

Remap RAM to Address 0 and Reset

DOWNLOAD_INIT

0x14

Initialize for RAM download from host to TMF8801

W_RAM

0x41

Write RAM Region (Plain = not encoded into e.g. Intel Hex

Records)

ADDR_RAM

0x43

Set the read/write RAM pointer to a given address

RAMREMAP_RESET = Execute Program Downloaded to RAM

This command remaps the RAM to address 0 and performs a System reset (see also command

RESET).

Command is performed immediately without any delay.

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