BC3770 datasheet(32/45 Pages) FREESCALE

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Analog Integrated Circuit Device Data



Freescale Semiconductor

BC3770

5.5.5.8

CTRL: ON/OFF Control Register

5.5.5.9

VBUSCTRL: VBUS Input Current Limit

Address

(hex)

Mode

Reset Condition:

VSYS

 VSYS_UVLO

reset: 0x42

R/W

Bit

Name

Reset

Description

Reserved

Write “0”

ENCOMPARATOR

Enable/Disable the comparators to detect “BATOVP”, WEAKBAT”, “VSYSOK”, “VSYSNG”

and “DISLIMIT” interrupt events in the registers from 00h to 02h.

0: Turn Off the comparators

1: Turn On the comparators

Reserved

Do Not write “1”

Reserved

Do Not write “1”

RESET

Software Reset

0: No Reset

1: Reset all charge parameters on all registers (except interrupt, interrupt mask registers

and status register) (return to 0 after writing 1)

SUSPEN

Enable/Disable Suspend mode (Turn off the FET between VBUS and PMID)

0: Disable Suspend mode (Q1 FET ON)

1: Enable Suspend mode (Q1 FET in Hi-Z Mode)

CHGEN

Enable/Disable Battery Charger

0: Disabled

1: Enabled

ENBOOST

Enable/Disable OTG mode in Boost

0: Disable OTG mode

1: Enable OTG mode

Address (hex)

Mode

Reset Condition:

VSYS

 VSYS_UVLO

Reset: 0x08

R/W

Bit

Name

Reset

Description

7:6

Reserved

Write “00”

5:0

VBUSLIMIT

00 1000

Program the Input Current Limit, IIN_LIM, on VBUS in mA

Max current is limited to 2050 mA (All above 10 0111 set to 2.05 A)

500 mA Default

IIN_LIM = [100 mA + Dec. (bit 5:0) * 50 mA] (mA)

i.g: 500 mA = 100 mA + Dec. 8 (Bin 00 1000) * 50 mA

BC3770 Datasheet(PDF) 32 Page - Freescale Semiconductor, Inc

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