USB5906CSLASHKD datasheet(24/64 Pages) MICROCHIP

24 / 64 page

USB5906C

DS00003188C-page 24



2022 Microchip Technology Inc. and its subsidiaries

5.0

MODES OF OPERATION

The device provides two main modes of operation: Standby Mode and Hub Mode. These modes are controlled via the

RESET_N pin, as shown in Table 5-1.

The flowchart in Figure 5-1 details the modes of operation and how the device traverses through the Hub Mode stages

(shown in bold). The remaining sub-sections provide more detail on each stage of operation.

TABLE 5-1:

MODES OF OPERATION

RESET_N Input

Summary

Standby Mode: This is the lowest power mode of the device. No functions are active

other than monitoring the

RESET_N input. All port interfaces are high impedance and

the PLL is halted. Refer to Section 8.3.2, External Chip Reset (RESET_N) for additional

information on

RESET_N.

Hub (Normal) Mode: The device operates as a configurable USB hub with battery

charger detection. This mode has various sub-modes of operation, as detailed in

Figure 5-1. Power consumption is based on the number of active ports, their speed,

and amount of data transferred.

FIGURE 5-1:

HUB BOOT FLOWCHART

(OTP_CFG)

NORMAL operation

(SOC_CFG)

YES

(STRAP)

SPI

Signature

Present?

YES

Load Config from

Internal ROM

(CFG_RD)

Modify Config

Based on OTP

YES

(SPI_INIT)

CFG_STRAP for

SMBus Slave?

SOC Done?

Do SMBus or I2C

initialization

Combine OTP

Config Data

Run from

External ROM

Hub Connect

Load Config from

External ROM

(Ext_CFG

_RD)

Modify Config

Based on psuedo-

OTP

RESET_N deasserted

USB5906C/KD 数据表(PDF) 24 Page - Microchip Technology

USB5906C/KD 数据表(HTML) 24 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

数据表下载