USB3803 datasheet(16/99 Pages) MICROCHIP

16 / 99 page

USB3803

DS00001691B-page 16

 2014-2015 Microchip Technology Inc.

FIGURE 4-1:

MODES OF OPERATION FLOWCHART

Hub Communication Stage

(USB Traffic)

Hub Battery Charger Detection Stage

Hub Connect Stage

Hub Configuration Stage

Hub Wait RefClk Stage

Start

(SOC Set Pin RESET_N=0)

System Detects

VBUS/Cable

Inserted?

PMIC/SOC

Battery Charger Detection

(or other switch function)

SOC Set Pin RESET_N=1

SOC Set Pin BYPASS_N=0

SOC Set RESET_N=1

SOC Set BYPASS_N=1

Hub Enables Pullup Reistor

Host Enumerates and

Configures Hub

Host Initiates Data Transfers

to Downstream Devices

System identifies loss of

VBUS (cable removal)

SOC Set Pin RESET_N=0

SOC Set Pin BYPASS_N=0

System

Detects VBUS

Present?

Legend

Bypass

Mode

(USB3803C

ONLY)

Hub Mode

Standby

Mode

Hub Initialization Stage

Core Regulator Enabled

Power-On-Reset

PLL Synchronization

Timeout or

I2C Write

SP_ILOCK.

config_n

I2C Write

Wait for

I2C bit

SP_ILOCK.config_n

Hub Charger Detection

Integrated Battery Charger

Detection

Timeout

BCHGMODE.

EnableChrgDet

SP_ILOCK.

config_n

REF_CLK available

Default Charger

Detection

Run on Ring Oscillator

with default settings

BCHGMODE

.Enable

ChrgDet

Wait for

REF_CLK

Wait for Pin

HUB_CONNECT=1

OR I2C bit

SP_ILOCK.connect_n

USB3803 bảng dữ liệu(PDF) 16 Page - Microchip Technology

USB3803 bảng dữ liệu(HTML) 16 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99

bảng dữ liệu tải về

Link URL