PRELIMINARY
CYW43438
Table 17. WLBGA Signal Descriptions (Cont.)
WLBGA
Signal Name
Ball
Type
Description
Power Supplies
WLRF_XTAL_VDD1P2
WLRF_PA_VDD
WCC_VDDIO
WLRF_VDD_1P35
VDDC
M3
I
XTAL oscillator supply
Power amplifier supply
M1
I
F6
I
VDDIO input supply. Connect to VDDIO.
LNLDO input supply
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
Document Number: 002-14796 Rev. *K
Page 61 of 101
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