Automotive Module Series
AG521R-NA QuecOpen
Hardware Design
AG521R-NA_QuecOpen_Hardware_Design 63 / 92
1.
When WLAN or BT function is used, the coexistence interface must be used simultaneously.
2.
When BT function is enabled on the module, PCM_SYNC and PCM_CLK pins will only be used to output
signals.
3.
It is recommended that the networks of PCIE_CLKREQ and PCIE_WAKE
are pulled up to VDD_EXT.
4.
“*” means under development.
The following figure shows a reference design for WLAN and BT interfaces application.
BT_UART_CTS
62
DO
BT UART clear to send
GPIOs.
PCM_SYNC
73
IO
PCM data frame sync
PCM_CLK
75
IO
PCM data bit clock
PCM_IN
76
DI
PCM data input
PCM_OUT
78
DO
PCM data output
Others interfaces
WLAN_PWR_EN2
225
DO
WLAN power supply enable control
2
1.8 V power domain.
WLAN_PWR_EN1
222
DO
WLAN power supply enable control
1
WLAN_EN
228
DO
WLAN enable
BT_EN
66
DO
BT function enable
WLAN_SLP_CLK
231
DO
WLAN sleep clock
VDD_WIFI_VM
276
PO
Power supply for Wi-Fi
Vnorm = 1.35 V
VDD_WIFI_VH
277
PO
Power supply for Wi-FI
Vnorm = 1.95 V
NOTES
