Acer AcerNote 970 Service Manual page 157

Table 2-16 T62.036.C Pin Descriptions (continued)
Pin Name Pin Type
CN1 signals (continued)
CHARGON I
CHARGFB I
CHARGSP I
GND GND
CHRGOUT I
CN2 signals
P12VR O
GND GND
P3VR O
BMCVCC O
P3VRON O
P5VRON O
P5VR O
Pin No.
12 This is a logic level signal, active high to enable the adapter
current output. This signal allows the system board to turn off the
charger output whenever the battery pack reports unsafe
conditions such as over temperature, error or no communication.
It may be used in response to any other detectable unsafe
system conditions ±1uA maximum loading.
13 This signal is provided by a current sensor in the system to
indicate the current drawn from the AC adapter or other power
source such as docking station power supply. This level is 2
Amps per volt nominal. The source impedance is less than 1KΩ.
14 Analog input from the system board to limit the total current
consumed by the system from the AC adapter. This signal shall
be compared by the module with the CHARGFB from the system
mother board and the battery charger output current adjusted
until CHARGFB does not exceed CHARGSP. The system board
generates CHARGESP in conjunction with a ID resistor
embedded in the LCD cable. The scale is 2 amps per volt. The
source impedance is less than 2KΩ.
Note: The battery charger output may be reduced below the
level of CHARGESP by the battery charger current limit signal
CHARGECL.
15, 16 Ground
17, 18, Battery charger current source output at 3.5A max. The output
19, 20 current is controlled by two control signals which limit the battery
charging current and AC adapter output current. The output
voltage is limited to 13.2V~13.5V.
1, 2 +12V output, 0~0.5A.
3, 4, 15, Ground
16
5, 6, 7, 8 +3.3V output, 0~3A.
11, 13 +5V output, 0~0.5A. Used for resuming from suspend-to-
memory mode.
12 Enables P3VR. Logic level, Active high, +/-luA max loading
14 Enables PSVR. Logic level, Active high, +/-luA max loading
17, 18, +5V output, 0~2.5A.
19, 20
Description