Spi Flash Characteristics; Spi Flash Timing; Read-Register Timing - Infineon Cypress WICED CYW43903 Manual

17. SPI Flash Characteristics

17.1 SPI Flash Timing

17.1.1 Read-Register Timing

Figure 13 shows the SPI flash extended and quad read-register timing.
Note: Regarding Figure 13: All Read Register commands except Read Lock Register are supported. A Read Nonvolatile Configuration Register operation will output data
starting from the least significant byte.
Extended
0
C
DQ0 Command
MSB
DQ1 High-Z
Quad
0
C
DQ[3:0] Command
MSB
Document Number: 002-14826 Rev. *G
PRELIMINARY
Figure 13. SPI Flash Read-Register Timing
7 8 9
LSB
D D
OUT OUT
MSB
1 2 3
LSB LSB
D D D
OUT OUT
MSB
10 11 12
D D D
OUT OUT OUT
OUT
CYW43903
13 14 15
LSB
D D D
OUT OUT OUT
Don't care
D
OUT
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