TUSB8020BPHPR datasheet(17/44 Pages) TI

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TUSB8020B

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SLLSEF6C – JULY 2014 – REVISED JUNE 2017

Product Folder Links: TUSB8020B

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8.5.1.7 Battery Charging Support Register (offset = 6h) [reset = 0Xh]

Figure 9. Register Offset 6h

R/W

LEGEND: R/W = Read/Write; R = Read only; –n = value after reset

Table 10. Battery Charging Support Register

Bit

Field

Type

Reset

Description

7:2

RSVD

0Xh

Reserved. Read only, returns 0 when read.

1:0

batEn[1:0]

R/W

0Xh

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

implements the charging port features.

0 = The port is not enabled for battery charging support features

1 = The port is enabled for battery charging support features

Each bit corresponds directly to a downstream port, that is batEn0 corresponds to

downstream port 1, and batEN1 corresponds to downstream port 2.

The default value for these bits are loaded at the deassertion of reset with the value of

PWRCTL/BATEN[1:0].

When in I2C/SMBus mode the bits in this field may be overwritten by EEPROM contents or

by an SMBus host.

8.5.1.8 Device Removable Configuration Register (offset = 7h) [reset = 0Xh]

Figure 10. Register Offset 7h

R/W

LEGEND: R/W = Read/Write; R = Read only; –n = value after reset

Table 11. Device Removable Configuration Register

Bit

Field

Type

Reset

Description

customRmbl

R/W

0Xh

Custom removable status. When this field is a 1, the TUSB8020B uses rmbl bits in this

6:2

RSVD

0Xh

Reserved. Read only, returns 0 when read. Bits 3:2 are RW. They are reserved and

return 0 when read.

1:0

rmbl[1:0]

R/W

0Xh

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

ports 2 through 1 are removable or permanently attached.

0 = The device attached to the port is not removable

1 = The device attached to the port is removable

Each bit corresponds directly to a downstream port n + 1, that is rmbl0 corresponds to

downstream port 1, rmbl1 corresponds to downstream port 2, and so forth.

This field is read only unless the customRmbl bit is set to 1. Otherwise the value of this

filed reflects the inverted values of the OTP ROM non_rmb[1:0] field.

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