TMF8805 datasheet(60/74 Pages) OSRAM

60 / 74 page

TMF8805

Datasheet

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DS000692

• v7-00 • 2023-Dec-01

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After this the application that is located in RAM will be running. If there is no valid application

you will need to do a HW reset (toggle enable pin or power cycle).

Table 105: RAMREMAP_RESET

Address

Value

Meaning

BL_CMD_STAT

0x11

REMAP RAM to 0 and RESET

BL_SIZE

No parameters

BL_CSUM

0xEE

DOWNLOAD_INIT

This command is used to initialize the download HW for secure devices.

Table 106: DOWNLOAD_INIT

Address

Value

Meaning

BL_CMD_STAT

0x14

Initialize the HW for download from host to TMF8805 RAM

BL_SIZE

BL_DATA0

0..0xFF

Seed

BL_CSUM

0..0xFF

W_RAM

This command writes the given data to a defined RAM region. Note that the RAM pointer has

first to be set by the command ADDR_RAM. After the command is successfully executed the

RAM pointer will point to the first byte after the written region.

Table 107: W_RAM

Address

Value

Meaning

BL_CMD_STAT

0x41

Write to main RAM

BL_SIZE

0..0x80

Number of bytes to be written

BL_DATA0

0..0xFF

1st byte to be written

BL_DATA1

0..0xFF

2nd byte to be written

…

BL_DATA127

0..0xFF

128th byte to be written (only if size was 0x80).

BL_CSUM

0..0xFF

The CSUM comes immediately after the data.

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