USB 2.0 Hi-Speed 3-Port Hub Controller Optimized for Portable Applications
Datasheet
Table 7.14 Upstream (Port 0) Battery Charging Control 1 Register
BC_CTL_1
(0x6100- RESET=0x00)
UPSTREAM (PORT 0) BATTERY CHARGING CONTROL 1
REGISTER
BIT
NAME
R/W
DESCRIPTION
7
USB2_IDP_SRC_EN
R/W
AFE 10uA IDP_SRC current source Enable
0: Disabled (Hi Z)
1: Enabled
6
5
USB2_VDAT_SRC_EN
R/W
AFE 0.6V VDATA_SRC voltage source Enable
0: Disabled (Hi Z)
1: Enabled
USB2_HOST_CHRG_EN R/W
Enable charging host port mode
0: Portable Device
1: Charging Host port.
When the charging host port is bit is set, the connections of
V
DATA_SRC, IDAT_SINK, IDP_SRC, VDAT_DET are reversed
between DP and DM
4
3
USB2_IDAT_SINK_EN
USB2_VDAT_DET
R/W
R
AFE 100uA current sink and the VDAT_DET comparator Enable
0: Disabled (Hi Z)
1: Enabled
V
DAT_DET comparator output
0: No voltage detected
1: Voltage detected (a possible charger or a
device)
2
1
0
USB2_BC_DP_RDIV_EN R/W
AFE Battery Charging Resistor Divider Enable – DP.
0: Disables resistor divider on DP.
1: Enables 2.7V voltage reference on DP through use of
9.7K/48.5K resistor divider.
USB2_BC_DM_RDIV_E
N
R/W
AFE Battery Charging Resistor Divider Enable – DM.
0: Disables resistor divider on DM.
1: Enables 2.0V voltage reference on DM through use of
29.1K/48.5K resistor divider.
USB2_DP_DM_SHORT_ R/W
EN
Sets the port into China battery charger mode.
SMSC USB3813
45
Revision 1.0 (06-17-13)
DATASHEET
SMSC [ SMSC CORPORATION ]
