TUSB8040ARKMR datasheet(21/38 Pages) TI2

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TUSB8040A

www.ti.com

SLLSEA7F – MAY 2012 – REVISED SEPTEMBER 2013

3.4.7

Battery Charging Support Register

Table 3-14. Register Offset 6h

Bit No.

Reset State

Table 3-15. Bit Descriptions – Battery Charging Support Register

Bit

Field Name

Access

Description

7:4

RSVD

Reserved. Read only, returns 0 when read.

Battery Charger Support. The bits in this field indicate whether the

downstream port implements the charging port features. A value of 0

indicates the port does not implement the charging port features. A value

of 1 indicates the port does support the charging port features. Each bit

corresponds directly to a downstream port, i.e. batEn0 corresponds to

downstream port 0. When in I2C/SMBus mode the bits in this field

corresponding to the enabled ports per used[3:0] may be over-written by

3:0

batEn[3:0]

EEPROM contents or by an SMBus host.

The default value for these bits are loaded at the de-assertion of reset

with the value of the PWRON[3:0]z_BATEN[3:0] as follows:

bateEn[3:0] defaults to wxyzb,

where w is PWRON3z_BATEN3, x is PWRON2z_BATEN2, y is

PWRON1z_BATEN1 and z is PWRON0z_BATEN0.

3.4.8

Device Removable Configuration Register

Table 3-16. Register Offset 7h

Bit No.

Reset State

Table 3-17. Bit Descriptions – Device Removable Configuration Register

Bit

Field Name

Access

Description

7:4

RSVD

Reserved. Read only, returns 0 when read.

Removable. The bits in this field indicate whether a device attached to

downstream ports 3 through 0 are removable or permanently attached. A

value of 0 indicates the device attached to the port is not removable. A

value of 1 indicates the device attached to the port is removable.

3:0

rmbl[3:0]

The default value for these bits are loaded at the de-assertion of reset

with the value of LEDA[3:0]z_RMBL[3:0] as follows:

rmbl[3:0] defaults to wxyzb,

where w is LEDA3z_RMBL3, x is LEDA2z_RMBL2, y is LEDA1z_RMBL1

and z is LEDA0z_RMBL0.

FUNCTIONAL DESCRIPTION

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