ADLINK BattMan: Smart Battery Management Reference Design - Manual (Page 17)

Page 17 Express-IA533 User’s Manual Page 17 Express-IA533 User’s Manual Express-CB User’s Manual Page 17 BattMan User’s Guide Page 17
6.3 Indicator LEDs
There are four LEDs to indicate the Operating Mode and Charger Status of the BattMan
module. The functions of LED1~4 are dependent on the settings of JP1 and JP2.
When in Battery Management Mode (JP1 pins 1-2 shorted), LED1/LED2 are connected to the
Host SMBus clock and data signals and are ON to indicate that the BattMan module is
actively communicating with the Host System. LED3 is connected to the SMB_ALERT signal
and will light briefly during system power up but will remain OFF during normal operation.
When in Stand-alone Charger Mode (JP1 pins 2-3 shorted), LED1 is OFF and LED2/LED3
indicate the charging status of Battery2/Battery1 respectively (ON if charging).
LED JP1 (1-2) Battery Management Mode JP1 (2-3) Stand-alone Charger Mode
1 (ON) SMB_CLK Active OFF
2 (ON) SMB_DAT Active ON if Battery2 charging
3 SMB_ALERT Active ON if Battery1 charging
When the charger is enabled (JP2 pins 1-2 shorted) and the 19V AC/DC power adapter is
connected, LED4 is ON. When the charger is disabled (JP2 pins 2-3 shorted) or the 19V AC/
DC power adapter is not connected, LED4 is OFF.
LED JP2 (1-2) Charger Enabled JP2 (2-3) Charger Disabled
4 ON (charger enabled & 19VDC present) OFF (charger disabled or no 19VDC)
LED4
LED1
LED2
LED3