N27 Hardware User Guide
Chapter 4 Application Interfaces
Copyright © Neoway Technology Co., Ltd. All rights reserved.
35
t(sr)
Set-up time from data
receive to WS input
16.276
/
/
ns
t(hr)
Hold
time
from
data
receive to WS input
0
/
/
ns
t(dtr)
Delay time from data send
to WS output
/
/
65.100
ns
t(htr)
Hold time from data send
to WS output
0
/
/
ns
4.3.5 SPI
Signal
Pin
I/O
Function
Remarks
SPI4_CLK
1
64
DO
Clock signal
Software (open) version: used
as
SPI4_CLK.
Maximum
frequency: 50 MHz.
SPI4_MISO
1
65
DI
Master input
Software (open) version: used
as SPI4_MISO.
SPI4_MOSI
1
66
DO
Master output
Software (open) version: used
as SPI4_MOSI.
SPI4_CS_N
1
63
DO
Chip select
Software (open) version: used
as SPI4_CS_N.
The SPI interface supports 1.8 V and only master mode. The following figures show the SPI connection
and timing.
Figure 4-16 SPI connection
SPI_MOSI
SPI_CS_N
SPI_CLK
N27 module
(host)
SPI_MISO
SPI_MISO
SPI_MOSI
CLK
CS
SPI device
(device)
