TUSB8044AI datasheet(34/63 Pages) TI1

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TUSB8044A

SLLSF92 – FEBRUARY 2019

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8.5.11 Device Configuration Register 2

Figure 12. Register Offset Ah

Bit No.

Reset State

Table 19. Bit Descriptions – Device Configuration Register 2

Bit

Field

Type

Description

Reserved

Reserved. Read-only, returns 0 when read.

customBCfeatures

Custom Battery Charging Feature Enable. This bit controls the ability

to write to the battery charging feature configuration controls.

0 = The HiCurAcpModeEn is read only and the values are loaded from

the OTP ROM.

1 = The HiCurAcpModeEn bit is read/write and can be loaded by

EEPROM or written by SMBus.

This bit may be written simultaneously with HiCurAcpModeEn.

pwrctlPol

Power enable polarity. This bit is loaded at the de-assertion of reset

with the value of the PWRCTL_POL pin.

0 = PWRCTL polarity is active low

1 = PWRCTL polarity is active high

When the TUSB8044A is in I2C mode, the TUSB8044A loads this bit

from the contents of the EEPROM.

When the TUSB8044A is in SMBUS mode, the value may be over-

written by an SMBus host.

HiCurAcpModeEn

RO/RW

High-current ACP mode enable. This bit enables the high-current tablet

charging mode when the automatic battery charging mode is enabled

for downstream ports.

0 = High current divider mode disabled . High current is ACP2(default)

1 = High current divider mode enabled. High current mode is ACP3

This bit is read only unless the customBCfeatures bit is set to 1. If

customBCfeatures is 0, the value of this bit reflects the value of the

OTP ROM HiCurAcpModeEn bit.

3:2

Reserved

Reserved. These registers are unused and will return whatever value

was written.

autoModeEnz

Automatic Mode Enable.

The automatic mode only applies to downstream ports with battery

charging enabled when the upstream port is not connected. Under

these conditions:

0 = Automatic mode battery charging features are enabled.

1 = Automatic mode is disabled; only Battery Charging DCP and CDP

mode is supported.

NOTE: When the upstream port is connected, Battery Charging CDP

mode will be supported on all ports that are enabled for battery

charging support regardless of the value of this bit.

RSVD

Reserved. Read only, returns 0 when read.

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