Data Sheet
Table Of Contents
- 5.User Manual
- Revision History
- Table List
- About This Document
- Table of Contents
- Chapter 1. Overview
- Chapter 2. Interfaces Description
- 2.1. Interfaces parameter definitions
- 2.2. Pin description
- 2.3. Interfaces detail description
- 2.3.1. Power supply interface
- 2.3.2. RGMII interfaces
- 2.3.3. SPDIF interface
- 2.3.4. Audio interface
- 2.3.5. USB interface
- 2.3.6. PCIe interface
- 2.3.7. MIPI DSI interface
- 2.3.8. HDMI interface
- 2.3.9. JTAG interface
- 2.3.10. SDIO interface
- 2.3.11. BLSP interface
- 2.3.12. Power on interface
- 2.3.13. Reset interface
- 2.3.14. Boot configuration interface
- 2.3.15. Debug UART interface
- 2.3.16. PWM
- 2.3.17. Sleep clock
- 2.3.18. SPMI
- 2.3.19. Antenna interface
- Chapter 3. Electrical Characteristics
- Appendix 1. Notices
- Appendix 2. Trademarks
- 5.User Manual_ Warning
Thundercomm TurboX C40x SOM Datasheet
- 27 -
2.3.17. Sleep clock
The sleep-clock output from PMS405, and it is generated following ways:
Calibrated low-frequency RC oscillator, periodically uses the 38.4 MHz XO signal for calibration, achieving
accuracy suitable for the real-time clock.
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.
Table 2-25. SLEEP_CLK definition
Pin Name PIN Location Voltage Type Description Notes
SLEEP_CLK D2 1.8V DO 32.7 KHZ sleep clock output. -
2.3.18. 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.
Table 2-26. SPMI definition
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
2.3.19. 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.
Table 2-27. Antenna interface definition
Pin Name PIN Location Voltage Type Description
ANT_WL_Chain 1 50 - RF IO Antenna port for WIFI TX/Rx chain 1 of WCN3999 only
ANT_WL_Chain 0 59 - RF IO
Antenna port for WIFI/BT TX/Rx chain 0 of WCN3980
Antenna port for WIFI TX/Rx chain 0 of WCN3999 (BT standalone)
Antenna port for WIFI/BT TX/Rx chain 0 of WCN3999
BT_ANT 56 - RF IO Antenna port for standalone BT antenna (BT standalone), NC in others
NOTE:
On Wi-Fi/BT shared chain 0 SOM, BT_ANT should be NC and BT signal is output from “ANT_WL_Chain 0”.
On BT standalone SOM, BT signal is output from “BT_ANT”.
BT_ANT and ANT_WL_Chain 0 are supported by different variants of the SOM.
nicholas.wang_thundercomm.com
2022-07-21 2:34:47 AM CST