User's Manual

Page 10
BitaTek Co., Ltd. Copyright protected. All rights reserved.
NO. 115 Wugong 3rd Rd., Tel [phone]
Wugu Dist., New Taipei City 248, Taiwan (R.O.C.) Fax[phone]
P20
VCOIN
PI, PO
For RTC battery.
Clock
F17
PM8952_BB_CLK2
DO
Buffered baseband
(low-power) XO clock 2
System
W17
KYPD_PWR_N
DI
Internal pull-up to dVdd;
keep C load < 10 pF. Dual
function:
1. Keypad power on;
initiates power on when
grounded
2. Can be configured as
stage 2 or stage 3 reset if
held LOW longer
X15
RESIN_N
DI
PMIC reset input ; initiates
stage 2 or stage 3 reset if
held LOW
W20
PMI8952_CHG_EN
DI
Charger enable
V20
CHG_VBAT_SNS
AI
Sensed battery voltage for
charger circuits
T20
BATT_ID
AI
Battery ID input to ADC;
also detects missing
battery
Y16
CS_MINUS
AI
Current sense resistor —
minus side (low side)
V15
CS_PLUS
AI
Current sense resistor —
plus side (high side)
V16
BATT_MINUS
AI
Battery minus (-) terminal
sense input
U15
BATT_PLUS
AI
Battery plus (+) terminal
sense input
X17
BATT_THERM
AI
Battery temperature input
to ADC (measures pack
temperature) , default NTC
is 47KΩ±1% in EVB
battery .