Q7-A29
Q7-A29 - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.B. - Reviewed by G.G. Copyright © 2016 SECO S.r.l.
42
series SOC
’
s System Management Bus controller.
SMB_ALERT#: SM Bus Alert line for System Management. Bidirectional signal, electrical level +3.3V_A with a 10k
Ω
pull-up resistor. It is managed by AMD G-
series SOC
’
s General Event manager. Any device place on the SM Bus can drive this signal low to signal an event on the bus itself.
GP0_I2C_CLK: general purpose I2C Bus clock line. Bidirectional signal, electrical level +3.3V_S with a 2k2
Ω
pull-up resistor. This I2C signal is derived from AMD
G-series SOC
’
s General Purpose I/O pin GPIO49.
GP0_I2C_DAT: general purpose I2C Bus data line. Bidirectional signal, electrical level +3.3V_S with a 2k2
Ω
pull-up resistor. This I2C signal is derived from AMD
G-series SOC
’
s General Purpose I/O pin GPIO51.
WDTRIG#: Watchdog Trigger Input. It is an active low signal, +3.3V_S voltage with a 10k
Ω
pull-up resistor. This signal can be used to reset and restart, via
Hardware, the embedded microcontroller
’
s internal Watchdog Timer (which is usually managed via Software using Q7-A29 dedicated API - Application Program
Interface - libraries).
WDOUT: Watchdog event indicator Output. It is an active high signal, +3.3V_S voltage. When this signal goes high (active), it reports out to the devices on the
Carrier board that the embedded microcontroller
’
s internal Watchdog
’
s timer expired without being triggered, neither via HW nor via SW.
THRM#: Thermal Alarm Input. Active Low +3.3V_S voltage signal with 10k
Ω
pull-up resistor, managed by the embedded microcontroller. This input gives the
possibility, to carrier board
’
s hardware, to indicate to the main module an overheating situation.
FAN_TACHOIN: External FAN Tachometer Input. +3.3V_S voltage signal with 10k
Ω
pull-up resistor, managed by ST STM32F100R4H6 microcontroller.
FAN_PWMOUT: PWM output for FAN speed management, +3.3V_S voltage signal. It is managed by ST Microelectronics STM32F100R4H6 microcontroller.
SPKR: Speaker output, +3.3V_S voltage buffered signal, directly managed by AMD G-series SOC
’
s embedded 8254 Timer (counter #2).
3.2.3.16
Manufacturing signals
According to Qseven
®
Standard specifications, rel. 2.0, on pin designed as MFG_NCx (pins 204, 207÷210) are carried the JTAG signal necessary to program Q7-
A29 embedded microcontroller.
The JTAG interface available on MFG_NCx pins is reserved only for the manufacturing phase; it must not be used by the customer.
It is not possible at all to use these pins to trace the software (for debug purposes).
