ZHCSI54A September 2016 – May 2018 BQ25890H
PRODUCTION DATA.
After the VBUS_GD bit is set and REGN LDO is powered, the charger device runs Input Source Type Detection when AUTO_DPDM_EN bit is set.
The bq25890H follows the USB Battery Charging Specification 1.2 (BC1.2) and to detect input source (SDP/CDP/DCP) and non-standard adapter through USB D+/D- lines. In addition, when USB DCP is detected, it initiates adjustable high voltage adapter handshake on D+/D-. The device supports MaxCharge™ handshake when MAXC_EN or HVDCP_EN is set.
After input source type detection, an INT pulse is asserted to the host. In addition, the following registers and pin are changed:
The host can over-write IINLIM register to change the input current limit if needed. The charger input current is always limited by the lower of IINLIM register or ILIM pin at all-time regardless of Input Current Optimizer (ICO) is enable or disabled.
When AUTO_DPDM_EN is disabled, the Input Source Type Detection is bypassed. The Input Current Limit (IINLIM) register, VBUS_STAT, and SPD_STAT bits are unchanged from previous values.