CY8CKIT-064S0S2-4343W PSoC 64 Standard Secure – AWS Wi-Fi BT Pioneer Kit Guide, Doc. # 002-30680 Rev. *B
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Hardware
4.3.4
microSD Card SPI Multiplexing
The microSD card is connected by a 6-pin SDHC interface by default i.e., CLK, CMD and DAT[0:3].
There is an optional provision to connect it over a 4-pin SPI interface i.e., CLK, MOSI, MISO and
SSEL . To do this, load R165, R167, and R169 and remove R162, R163, R164, R166, and R168.
Figure 4-22. microSD Card SPI Multiplexing
4.3.5
U.FL (UMCC) Connector for External Antenna
The RF output of CYW4343W is connected to the chip antenna by default. To disconnect the chip
antenna and connect an external antenna, remove C13 and then populate C12 and J1 on
CY8CMOD-064S0S2-4343W.
Figure 4-23. U.FL (UMCC) Connector for External Antenna
4.3.6
U.FL (UMCC) Connector for Antenna Diversity
To evaluate antenna diversity, an external antenna can be connected to the output of antenna
diversity RF switch by populating C21 and J2 on CY8CMOD-064S0S2-4343W.
Figure 4-24. U.FL (UMCC) Connector for Antenna Diversity
R34
49.9K
J20
MICROSD CARD SOCKET
DAT2
1
DAT3
2
CMD
3
VDD
4
CLK
5
VSS
6
DAT0
7
DAT1
8
CD1
9A
CD_COM1
10A
CD_COM2
10B
CD2
9B
R46
4.7K
SD_CD_L
VCC_VDDIO0
J_SD_DAT2
J_SD_DAT3
J_SD_CLK
J_SD_DAT0
J_SD_DAT1
J_SD_CMD
R169
0 OHM
No Load
R168
0 OHM
R167
0 OHM
No Load
R166
0 OHM
R164
0 OHM
R165
0 OHM
No Load
J_SD_CMD
J_SD_CLK
J_SD_DAT0
R163
0 OHM
R162
0 OHM
SD_DAT0
SD_DAT2
SD_DAT1
J_SD_DAT0
J_SD_DAT1
J_SD_DAT2
J_SD_DAT3
J_SD_CMD
R43
49.9K
R40
49.9K
R42
49.9K
R39
49.9K
R41
49.9K
SD_DAT3
VDDIO0
SD_CLK
SD_DAT0
SD_DAT1
SD_DAT2
microSD Card Section
SD_CMD
ANT1_ANT2
L5
1.8nH
J1
A-1JB
DNI
S
G1
G2
G3
A1
2450AD14A5500T
1
GND
3
NC1
NC2
2
4
FEED
ANT2
L2
1.5nH
ANT1
L1
1.8nH
C19
0.2pF
200V
C13
8.2pF
50V
C12
8.2pF
50V
DNI
Antenna
Note: VDDUSB is used as this is the only fix ed 3.3V rail
VBAT is prov ided as optional
ANT0
ANT1 (default)
WL_GPIO_2
Anetnna Diver sity
Diversity Switch Truth Table
1
0
VDD_RFSW
VBAT
VDDUSB
R1
0 OHM
DNI
R2
0 OHM
RTC7608
U3
SON6H_0.35mm
OUT1
1
IN
5
VDD
6
GND
2
OUT2
3
VCTL
4
VDD_RFSW
C20
0.1uF
10V
J2
A-1JB
DNI
S
G1
G2
G3
C21
8.2pF
50V
DNI
WL_GPIO_2
ANT0
ANT1_ANT2
RF_SW_IN
Antenna Diversity Switch
C11
8.2pF
50V