TQ MB-SMARC-3, Руководство пользователя

Страница: 24 / 34

User's Manual l MB-SMARC-3 UM 0100 l © 2022, TQ-Systems GmbH Page 19
3.6.22 Debug LEDs
The MB-SMARC-3 provides several LEDs for debug purposes.
Table 17: Debug LEDs
Function PCB Text Remark
Power PWR Green if input power is present
Carrier Power on CARRIER_PWR_ON Green if module has turned carrier power on
SUS S3 S3 act. Green if module is in power-saving mode S3 (Suspend to RAM)
Reset active RST act. Green if Reset is asserted
SATA activity SATA act. SATA activity LED (green if active)
3.6.23 SMARC signal extension connector, X26
The MB-SMARC-3 provides an extension connector (2.54 mm pitch), where some signals of the SMARC module are available.
Table 18: SMARC signal extension connector, X26
Illustration 20: SMARC signal extension connector
3.6.24 SMARC connector
On the MB-SMARC-3 an MXM3 compatible connector X1 is used to contact the gold contacts of the SMARC module.
The stack height (board to board distance between carrier board and module) is 5 mm.
Signal Pin Signal
SMB_CLK_3V3 1 2 I2C_GP_CK_3V3
SMB_DAT_3V3 3 4 I2C_GP_DAT_3V3
SMB_ALERT_3V3 5 6 NC
FORCE_RECOV_1V8# 7 8 BATLOW_1V8#
CHARGING_1V8# 9 10 CHARGER_PRSNT_1V8#
LID_1V8# 11 12 SLEEP_1V8#
WDT_1V8# 13 14 PCIE_WAKE_3V3#
V_3V3 15 16 GND
V_3V3 17 18 GND
V_5V 19 20 GND
2
20
1
19