PRELIMINARY
CYW43340
Table 17. WLBGA Signal Descriptions (Cont.)
WLBGA Ball
Signal Name
Type
Description
Clocks
H1
G1
J3
WRF_XTAL_CAB_XON
O
XTAL oscillator output
XTAL oscillator input
WRF_XTAL_CAB_XOP
WRF_TCXO_CKIN2V
I
I
TCXO buffered input. When not using a TCXO
this pin should be connected to ground.
E11
CLK_REQ
O
External system clock request—Used when the
system clock is not provided by a dedicated
crystal (for example, when a shared TCXO is
used). Asserted to indicate to the host that the
clock is required. Shared by BT, and WLAN.
Can also be programmed as the BT_I2S_DI
input pin if CLK_REQ functionality is not
required.
F11
LPO_IN
I
External sleep clock input (32.768 kHz)
Bluetooth/FM Receiver
A7
BT_RF
I/O
Bluetooth transceiver RF antenna port
FM analog output 1
D11
C11
A10
FM_AOUT1
FM_AOUT2
FM_RFIN
O
O
FM analog output 2
I
Bluetooth PCM
I/O
FM radio antenna port
F8
BT_PCM_CLK
PCM clock; can be master (output) or slave
(input)
F9
E8
F7
BT_PCM_IN
I
PCM data input sensing
PCM data output
BT_PCM_OUT
BT_PCM_SYNC
O
I/O
PCM sync; can be master (output) or slave
(input)
Document Number: 002-14943 Rev. *L
Page 48 of 96
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