E
E
v
v
a
a
l
l
u
u
9
GND
10
VCC
11
NC
12
NC
13
BT_PRIORITY
14
NC
15
WLAN_ACTIVE
16
NC
17
NC
18
NC
19
NC
20
GND
Table 4: General Purpose Header(RS-WC-301-EVB)
SPI Header
The SPI header is used to connect the SPI interface of the module to a Host
MCU.
Pin
Pin Name
Number
NC
1
SPI_CS
2
GND
3
NC
4
SPI_CLK
5
Redpine Signals, Inc.
R
S
-
W
C
-
3
0
1
R
S
-
W
C
-
3
0
1
a
a
t
t
i
i
o
o
n
n
B
B
o
o
a
a
r
r
d
d
U
U
s
s
e
e
r
r
G
G
u
u
V
e
r
s
i
o
n
2
.
5
1
V
e
r
s
i
o
n
2
.
5
1
-
Power
-
-
Input
-
Output
-
-
-
-
-
Direction
-
Input
-
-
Input
i
i
d
d
e
e
be left open
Ground
3.3V power supply. If the USB
port for power supply is not used,
this pin can be used to drive
power to the EVB from the Host
MCU platform. The direction of the
"Power Selection" switch is
ignored in this case. The
maximum current sourcing
capacity of the Host should be
500mA. If not used, this pin
should be left open
No connect
No connect
Used to indicate through logic
high that BT is transmitting high
priority traffic. When BT
coexistence is not used, this pin
should be grounded
No connect
Used for BT Coexistence. It
indicates with logic high that
WLAN activity is in progress.
When low, BT device has the
opportunity to transmit. Not used
in current firmware, should be left
open
No connect
No connect
No connect
No connect
Ground
Description
No connect
SPI slave select. Active low.
Ground
This pin must be left unconnected
SPI clock. Max frequency of 12.5
Page 11
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