User Guide

NPM-5
CMT Module MA4 PAMS Technical Documentation
3DJH 1RNLD&RUSRUDWLRQ/WG ,VVXH
)LJXUH3RZHUXSZLWKVZLWFK
3RZHUXSE\57&
:KHQWKHXVHUVHOHFWVWKH$ODUPDQGWKHSKRQHLVSRZHUHGRIIWKH57&LQWHUQDOLQ
&&217SRZHUVXSWKHSKRQHDWWKHDODUPVHWWLPHLQWHUQDO&&217VLJQDO57&3ZUVHWWR
ORJLFDO
3RZHUXSE\,%,
,%,FDQSRZHU&&217XSE\JLYLQJDVKRUWSXOVHPVWKURXJKWKH%7(03OLQH$IWHU
SRZHUXS%7(03ZLOODFWDVDQ\RWKHULQSXWFKDQQHOIRU$'&
3RZHU'RZQ
7KHEDVHEDQGLVSRZHUHGGRZQ
• Pressing the power key (that the MAD monitors).
• The battery voltage has dropped below the operation limit, either by not charging it or
by removing the battery.
• Letting the CCONT watchdog expire, which switches off all CCONT regulators and the
phone is powered down.
• Setting the real time clock to power off the phone by a timer. The RTC generates an
interrupt signal, when the user turns the alarm off. The RTC interrupt signal is con-
nected to the PWRONX line to give a power off signal to the CCONT as the power key
does.
7KH0$'FRQWUROVWKHSRZHUGRZQ:KHQWKHSRZHUNH\KDVEHHQSUHVVHGORQJHQRXJK
RUWKHEDWWHU\YROWDJHLVGURSSHGEHORZWKHOLPLWWKH0&8LQLWLDWHVDSRZHUGRZQSURFH
VBB (2
CCPURX
PURX
Vcha
r
12 3
1: Power switch pressed ==> Digital voltages on in CCONT.
(VBB)
2: CCONT digital reset released. VCXO turned on.
3:
≈
62 ms delay.
VR1
,VR
SLEEPX
PWRONX
Figure 17. Power up with switch