TH6503 View Datasheet(PDF) - Melexis Microelectronic Systems

Part Name

Description

Manufacturer

TH6503

USB Low-Speed Interface

Melexis Microelectronic Systems  

TH6503 USB Low-Speed Interface

Flowchart for

Programming the

TH6503

Main Program

Figure 15 shows the main order of events of the USB specific part of firmware for the

microcontroller. The bits located in the StatusRegister mark the event. Depending on these bits the

firmware must branch.

Initialisation

SCK=0;SIN=1;

SDI=0

Yes

SDO=1

No

Read

StatusRegister

Read CntOutRegister

and OUT FIFO

Yes

OUT Done

Reaction (depends

on the received Data)

No

Data to send ?

Yes

EP0 IN Done

Yes

Write next Control

Byte(s) to

No

IN FIFO

No

Data to send ?

Yes

EP1/2 IN Done

Yes

Write next Device

Data to

No

IN FIFO

Reset SUS Bit in the

BridgeConfigRegister Yes

Reset Suspend

Yes

Timer

Resume Detect

No

USB Active

No

USB Reset

Yes

Figure 15. Flowchart for Main Program (using TH6503 in Interrupt mode)

15

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