CYW4343X
Table 22. WLBGA Signal Descriptions (Cont.)
WLBGA Ball Type
Signal Name
Description
Power Supplies
WLRF_XTAL_VDD1P2
M3
I
XTAL oscillator supply
WLRF_PA_VDD
M1
I
Power amplifier supply
WCC_VDDIO
F6
I
VDDIO input supply. Connect to VDDIO.
VDDIO input supply. Connect to VDDIO.
LNLDO input supply
SYS_VDDIO[4343S+4343W+43CS4343W1]
C5
I
WLRF_VDD_1P35
VDDC
M2
I
D3, G4
E7
I
Core supply for WLAN and BT.
VOUT_3P3
O
3.3V output supply. See the reference schematic for
details.
Ground
BT_IF_VSS
H2
G2
H3
E3
B6
A7
D4, J5
H4
J2
I
I
I
I
I
I
I
I
I
I
I
I
I
1.2V Bluetooth IF block ground
Bluetooth/FM RF PLL ground
1.2V Bluetooth RF ground
FM RF ground
BTFM_PLL_VSS
BT_VCO_VSS
FM_RF_VSS
PMU_AVSS
Quiet ground
SR_PVSS
Switcher-power ground
Core ground for WLAN and BT
AFE ground
VSSC
WLRF_AFE_GND
WLRF_LNA_GND
WLRF_GENERAL_GND
WLRF_PA_GND
WLRF_VCO_GND
WLRF_XTAL_GND
2.4 GHz internal LNA ground
Miscellaneous RF ground
2.4 GHz PA ground
K2
L2
L3
VCO/LO generator ground
XTAL ground
L4
[4343W]Table 23 provides the WLCSP package signal descriptions.
Table 23. WLCSP Signal Descriptions
Signal Name
WLCSP Bump
Type
Description or Instruction
RF Signal Interface
WRF_RFIN_ELG_2G
61
63
I
Connect to an external inductor. See the
reference schematic for details.
WRF_RFIO_2G
I/O
2.4 GHz BT and WLAN RF input/output port
SDIO Bus Interface
SDIO_CLK
108
104
112
115
118
I
SDIO clock input
SDIO_CMD
I/O
I/O
I/O
I/O
SDIO command line
SDIO data line 0
SDIO data line 1.
SDIO_DATA_0
SDIO_DATA_1
SDIO_DATA_2
SDIO data line 2. Also used as a strapping option (see
Table 26 on page 87).
SDIO_DATA_3
122
I/O
SDIO data line 3
Note: Per Section 6 of the SDIO specification, 10 to 100 kΩ pull-ups are required on the four DATA lines and the CMD line.
This requirement must be met during all operating states by using external pull-up resistors or properly programming internal
SDIO host pull-ups.
Document No. 002-14797 Rev. *H
Page 82 of 128
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