Artesyn COMX-P4080-2G-ENP2 Installation and Use (August 2014) - Manual (Page 48)

Functional Description
COMX-P4080-2G-ENP2 Installation and Use (6806800P63B) 48
4.16 RTC & WDT
The RTC and WDT functions provided in the module are embedded separated in 2 ICs, U2100
and U2101 respectively. The WDT is accessed through I2C1 bus of the processor, and the RTC
is accessed through I2C2 bus, both with an address of 0xD0.The WDT triggers a reset output
signal for power-on reset, and the RTC provides a 32 KHz clock output for the RTC clock input
of the processor. Battery backup for the RTC is supplied by the VCC_BAT pin on the COME
connectors.
4.17 USB
This module consists of one USB PHY (USB3315) and one 4-ports (USB4~USB7) USB hub
(USB2514).The interface between the USB controller and USB PHY is ULPI bus, the second
group of multiplexing interface RGMII/ULPI. So the RCW should be properly set for the using of
the second group of ULPI bus.
Table 4-8 Real Time Clock
Characteristic Value
Vendor ST Micro
Device M41T62LC6F
Function Real-time clock with alarm interrupt, programmable
square wave output
Package LCC8 (1.5 mm x 3.2 mm)
Oracle Number 5106837C55
Table 4-9 WDT
Characteristic Value
Vendor ST Micro
Device M41T65Q6F
Function Watchdog output
Package QFN16 (3 mm x 3 mm)
Oracle Number 5106837C56