TDA4VM: BOOT-ROM QSPI support: W25Q16FW

Peter Li79

Part Number: TDA4VM

Hi, expert:

For OSPI, if 8-bit data rate is required for boot, a SPI Flash memory device should be carefully selected that is compatible with 1S-1S-8S mode of operation.

Does this affect QSPI boot mode?

For QSPI nor flash W25Q16FW ( )

In the data sheet, 8.2.9 Fast Read Quad Output (6Bh), Figure 13. Fast Read Quad Output Instruction (SPI Mode only)

it supports 1S-1S-4S mode.

I think TDA4VM boot ROM can support this device for QSPI_boot (0x6b command).

Please kindly help double check.

over 5 years ago

0 David Huang over 5 years ago

TI__Intellectual 2440 points

Hi Peter,

Looks like QSPI boot works in 1S-1S-1S mode on J7ES devices.

Thanks,

David

0 Peter Li79 over 5 years ago in reply to David Huang

TI__Expert 8940 points

Hi, David:

Would you please kindly share some information about how BOOT-ROM utilize the QSPI feature ?

3 bytes address? 4 bytes address?
the command used for "Quad read"?
1. 0x6b?
2. 0xeb?
3. 0x6d?
4. 0xed?
5. 0xe7?
what is the mode for "Quad read"
1. Extended SPI?
2. Quad SPI?
is Quad IO enabled? 4-4-4 ? 1-1-4?

Thanks.

0 David Huang over 5 years ago in reply to Peter Li79

TI__Intellectual 2440 points

Hi Peter,

Just a correction, we meant that QSPI boots in 1S-1S-4S mode.

I'm looking into the rest of your questions now.

Thanks,

David

0 David Huang over 5 years ago in reply to David Huang

TI__Intellectual 2440 points

Hi Peter,

In order:

1. 3 byte

2. 0x6b

3. We're not sure exactly what you're asking here. What does Extended SPI mean here?

4. No, Quad IO is not enabled.

Thanks,

David

Processors

Processors forum

TDA4VM: BOOT-ROM QSPI support: W25Q16FW