CYW4343X
Figure 13. An Example Multimode Wireless Charging Implementation
Motherboard
BSC
BSC
WPC/PMA
Coil
USB
External Charger
PMU
Host (AP)
NTC
Battery
Charging
WPT Front End (Power IC)
VDDIO
VBAT
Load
Control
V1P8SYS
VBAT
A4WP
Coil
Bridge
Voltage
Rectifier
WPT_3V3 (VBAT)
VBAT
SPDT
Regulator
3.3V
LDO
BT_REG_ON
WL_REG_ON
WPT_1V8 (VDDIO)
1V8
SPDT
1.8V
LDO
Power
Monitoring/
Control
BSC IF
Slave
SYS_VDDIO,
WCC_VDDIO
LDO_VDDBAT5V,
SR_VDDBAT5V
BCM5935X
WPT_IRQ
PMU
Wake‐Up
Internal
Power
POR
WPT_IRQ
BSC_CLK
BSC_SDA
OTP for A4WPT
Parameters
NFC_GPIO
NFC IC
CYW4343X
BT_VDDIO Domain
Figure 14 shows the signal interface between a CYW4343X and a CYW59350.
Figure 14. CYW4343X Interface to a BCM59350
BT_GPIO_3 (WPT_INTb)
BCM59350
Wireless
Charging PMU
BT_GPIO_4 (BSC_SDA)
BT_GPIO_5 (BSC_SCL)
CYW4343X
Document No. 002-14797 Rev. *H
Page 21 of 128
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