TMF8701 datasheet(47/66 Pages) OSRAM

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[v2-00] 2023-Feb-21

TMF8701 − Register Description

DOWNLOAD_INIT

This command is used to initialize the download HW for secure

devices.

Figure 110:

DOWNLOAD_INIT Command

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.

Figure 111:

W_RAM Command

Address

Value

Meaning

BL_CMD_STAT

0x14

Initialize the HW for download from host to TMF8701

RAM

BL_SIZE

BL_DATA0

0... 0xFF

Seed

BL_CSUM

0... 0xFF

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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