Document No. 002-14949 Rev. *E
Page 57 of 113
PRELIMINARY
CYW43353
12.2 Signal Descriptions
The signal name, type, and description of each pin in the CYW43353 is listed in
. The symbols shown under Type indicate
pin directions (I/O = bidirectional, I = input, O = output) and the internal pull-up/pull-down characteristics (PU = weak internal pull-up
resistor and PD = weak internal pull-down resistor), if any.
Table 15. WLBGA Signal Descriptions
WLBGA
Ball#
Signal Name
Type
Description
WLAN and Bluetooth RF Signal Interface
N7
WRF_RFIN_2G
I
2.4 GHz Bluetooth and WLAN receiver shared input.
N5
BT_RF_TX
O
Bluetooth PA output.
N12
WRF_RFIN_5G
I
5 GHz WLAN receiver input.
N8
WRF_RFOUT_2G
O
2.4 GHz WLAN PA output.
N11
WRF_RFOUT_5G
O
5 GHz WLAN PA output.
J7
WRF_TSSI_A
I
5 GHz TSSI input from an optional external power amplifier/power
detector.
H7
WRF_RES_EXT/
WRF_GPIO_OUT/WRF_TSSI_G
I/O
GPIO or 2.4 GHz TSSI input from an optional external power
amplifier/power detector.
RF Switch Control Lines
F12
RF_SW_CTRL_0
O
Programmable RF switch control lines. The control lines are
programmable via the driver and NVRAM file.
F11
RF_SW_CTRL_1
O
E12
RF_SW_CTRL_2
O
E11
RF_SW_CTRL_3
O
D12
RF_SW_CTRL_4
O
F8
RF_SW_CTRL_5
O
H9
RF_SW_CTRL_6
O
G7
RF_SW_CTRL_7
O
E10
RF_SW_CTRL_8
O
F5
RF_SW_CTRL_9
O
WLAN SDIO Bus Interface
Note:
These signals can also have alternate functionality depending on host interface mode. Refer to
Table 21, “CYW43353 GPIO/SDIO Alternative
for additional details.
B11
SDIO_CLK
I
SDIO clock input.
B12
SDIO_CMD
I/O
SDIO command line.
B10
SDIO_DATA_0
I/O
SDIO data line 0.
C10
SDIO_DATA_1
I/O
SDIO data line 1.
D10
SDIO_DATA_2
I/O
SDIO data line 2.
C11
SDIO_DATA_3
I/O
SDIO data line 3.