User guide

Redpine Signals, Inc. Proprietary and Confidential. Page 99
R
R
S
S
9
9
1
1
1
1
0
0
-
-
N
N
-
-
1
1
1
1
-
-
2
2
2
2
/
/
2
2
4
4
/
/
2
2
8
8
S
S
o
o
f
f
t
t
w
w
a
a
r
r
e
e
P
P
r
r
o
o
g
g
r
r
a
a
m
m
m
m
i
i
n
n
g
g
R
R
e
e
f
f
e
e
r
r
e
e
n
n
c
c
e
e
M
M
a
a
n
n
u
u
a
a
l
l
V
V
e
e
r
r
s
s
i
i
o
o
n
n
4
4
.
.
1
1
5
5
For the initialization command, the Host drives C1 command followed by an 8-bit
dummy data. Bits [7:6] of C1 are cleared and 0x15 is driven on bits [5:0].
Status response from the SPI Interface is driven during the transmission of the
dummy data i.e. after the transfer of 8-bits of command C1.
0 0 0 1 0 1 0 1 0 0 0 0 0 0 0 0
0
0 0 0 0 0 0 0 0 0 1 0 1 1 0 0 0
C1 (0x15)
Misc Data
Status Response (0x58)
sclk
cs
master_data
slave_data
Figure 18: SPI Slave Initialization
C1 (0x15)
0x00
Dummy
0x58
Host
Module
Response
Response (init success)