USB4624 Datasheet, PDF (34/68 Pages) SMSC Corporation – USB 2.0 HSIC Hi-Speed 4-Port Hub Controller

USB 2.0 HSIC Hi-Speed 4-Port Hub Controller
Datasheet
7.1.6
Byte Program Example
To perform a Byte Program, the device writes 0x02 to the first byte of the command buffer, followed
by a 3-byte address of the location that will be written to, and one data byte. The length of the transfer
is set to 5 bytes. The device first drives SPI_CE_N low, then SPI_DO outputs 8 bits of command,
followed by 24 bits of address, and one byte of data. SPI_DI is not used in this example.
SPI_CE_N
SPI_CLK
0 1 2 3 4 5 6 7 8 15 16 23 24 _{31 32 39}
SPI_DO
SPI_DI
0xDB
MSB
0x00
MSB
0xBF
0xFE
/0xFF
Data
MSB LSB
HIGH IMPEDANCE
Figure 7.4 SPI Byte Program Sequence
Revision 1.0 (06-17-13)
34
DATASHEET
SMSC USB4624