Silicon Laboratories Si475X Series Programming Manual page 9

Example:
PART_INFO Command
Action Data
CMD 0x02
STATUS →0x80
RESP1 →0x06
RESP2 →0x35
RESP3 →0x32
RESP4 →0x30
RESP5 →0x00
RESP6 →0x00
RESP7 →0x00
RESP8 →0x04
In this example, the part revision is 2.0.0 and the ROM ID is 4. Ensure that partial patches received from Silicon
Labs are intended for use with the part firmware revision and ROM, and that full patches are intended for use with
the ROM ID as shown in Table 2. It is possible to verify the FM and AM component firmware revisions with the
FUNC_INFO command, however, this is not necessary because there is always a unique mapping of component
revision to part revision.
Table 2. Si475x Firmware and ROM Compatibility
Part #
Si475x-A10
Si475x-A20
Si475x-A30
6. (Optional—step 3 of 3 to verify part firmware revision and ROM revision.) Send the POWER_DOWN
command. This step is required before proceeding with the patching procedure if steps 4 and 5 have been
followed.
Example
POWER_DOWN Command
Action Data
CMD 0x11
ARG1 0x00
STATUS →0x80
7. Send the POWER_UP command for boot loader function.
Description
PART_INFO
CTS = 1
Chip revision, 6
Part number (last two digits) 0x35 = 53, or Si4753
Firmware major revision = ASCII character "2"
Firmware minor revision = ASCII character "0"
Firmware build version = 0
Reserved, values will vary
Reserved, values will vary
ROM ID
Part Revision
1.0
2.0
3.0
Description
POWER_DOWN
Disable oscillator (ARG1 may be omitted with the same result)
CTS = 1
ROM ID FM Revision
2 3.2.3
4 8.0.8
5 10.0.8
Rev. 0.9
AN543
AM Revision
3.2.3
7.0.5
9.0.6
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