Data Sheet

THUNDERCOMM TurboX™ C40x SoM Datasheet
35
■ Using the 38.4 MHz XO circuit and dividing its output by 1172 to create a 32.7645 KHz signal. This signal is
used as the start-up sleep clock.
SLEEP_CLK Pin
Pin Name
PIN Location
Voltage
Type
Description
Notes
SLEEP_CLK
D2
1.8V
DO
32.7 KHZ sleep output.
Table 3-18 SLEEP_CLK definition
3.3.18 SPMI
The SPMI is a bidirectional, two-line digital interface for communication between Qualcomm chipsets, which
meets the relevant information for voltage and current level requirements.
SPMI Pin
Pin Name
PIN Location
Voltage
Type
Description
Notes
SPMI_CLK_CON
E6
1.8v
DO
System power management interface clock
SPMI_DATA_CON
E7
1.8v
IO
System power management interface data
Table 3-19 SPMI definition
3.3.19 Antenna Interface
The SoM provides the fully-integrated WLAN, Bluetooth function.
➢ WLAN supports 2 × 2 (WCN3999) and 1 × 1 (WCN3980) multiple input, multiple output (MIMO) with two
spatial streams IEEE802.11 a/b/g/n/ac WLAN standards.
➢ Supports Bluetooth +LE5.x + HS enabling seamless integration of WLAN/Bluetooth and low energy
technology.
➢ Concurrent operation for WLAN and BT.
Antenna interface
Pin Name
PIN Location
Voltage
Type
Description
Notes
ANT_WL_Chain 1
50
-
RF IO
Antenna port for WIFI Tx/Rx chain 1
ANT_WL_Chain 0
59
-
RF IO
Antenna port for WIFI/BT Tx/Rx chain 0
Table 3-20 Antenna interface definition