USB 2.0 Hi-Speed 3-Port Hub Controller Optimized for Portable Applications
Datasheet
Table 7.2 Upstream Battery Charging Detection Control Register (continued)
UP_BC_DET
(0x30E2 - RESET= 0x02)
UPSTREAM BATTERY CHARGING REGISTER
DESCRIPTION
BIT
NAME
R/W
0
START_CHG_DET
R/W
Manually Initiates a USB battery charger detection sequence at the time
of assertion. This bit must not be set while hub is in operation. This bit
is cleared automatically when the manual battery charger detection
sequence is completed.
0 = Write: No Effect / Read: Battery Charger Detection Sequence
Completed or not run.
1 = Write: Start Battery Charger Detection / Read: Battery Charger
Detection Sequence is running
Table 7.3 Upstream Custom Battery Charger Control Register
UPSTREAM CUSTOM BATTERY CHARGING CONTROL
UP_CUST_BC_CTL
(0x30E3 - RESET= 0x00)
BIT
NAME
R/W
DESCRIPTION
7
I2CControl
R/W
I2C control
0: I2C control disabled
1: I2C control enabled
6
5
4
3
DmPulldownEn
DpPulldownEn
IdatSinkEn
R/W
R/W
R/W
R/W
DM 15K pull down resistor control
0: DM 15K pull down resistor disabled
1: DM 15K pull down resistor enabled
DP 15K pull down resistor control
0: DP 15K pull down resistor disabled
1: DP 15K pull down resistor enabled
Idat current sink control
0: Idat current sink disabled
1: Idat current sink enabled
HostChrgEn
Host charger detection swap control
0: Charger detection connections of DP and DM are not swapped
(standard)
1: Charger detection connections of DP and DM are swapped. The USB
signal path is not reversed.
2
1
VdatSrcEn
R/W
R/W
Vdat voltage source control
0: Vdat voltage source disabled
1: Vdat voltage source enabled
ContactDetectEn
Contact detect current source control
0: Contact detect current source disabled
1: Contact detect current source enabled
SMSC USB3813
37
Revision 1.0 (06-17-13)
DATASHEET
SMSC [ SMSC CORPORATION ]
