Delay (SPI) Register - UG1087

Zynq UltraScale+ Devices Register Reference (UG1087)

Document ID
UG1087
Release Date
2025-06-20
Revision
1.11

Delay (SPI) Register Description

Register NameDelay
Offset Address0x0000000018
Absolute Address 0x00FF040018 (SPI0)
0x00FF050018 (SPI1)
Width32
TyperwNormal read/write
Reset Value0x00000000
DescriptionClock Delay

Delay (SPI) Register Bit-Field Summary

Field NameBitsTypeReset ValueDescription
d_nss31:24rwNormal read/write0x0Delay in SPI_REF_CLK for the length that the master mode slave select outputs are de-asserted between words when CPHA = 0.
Change only when controller is not actively transmitting or receiving data.
d_btwn23:16rwNormal read/write0x0Delay in SPI_REF_CLK cycles between one chip select being de-activated and the activation of another.
Change only when controller is not actively transmitting or receiving data.
d_after15:8rwNormal read/write0x0Delay in SPI_REF_CLK cycles from last bit of current word and the first bit of the next word.
Change only when controller is not actively transmitting or receiving data.
d_int 7:0rwNormal read/write0x0Added delay in SPI_REF_CLK cycles between setting SSx_b out low and first bit of transfer.
Change only when controller is not actively transmitting or receiving data.