DV164126 Microchip Technology, DV164126 Datasheet - Page 33

• Manufacturer Part Number: DV164126
• Description: KIT DEVELOPMENT USB W/PICKIT 2
• Manufacturer: Microchip Technology

Specifications of DV164126

• Main Purpose: Interface, USB 2.0 Slave
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: PIC18F13K50, PIC18F14K50
• Primary Attributes: Full Speed (12Mbps), MCU Based
• Secondary Attributes: 4 Labs: Enumeration, HID Mouse, HID Keyboard, CDC Serial Emulator
• Silicon Manufacturer: Microchip
• Silicon Core Number: PIC18F14K50, PIC18F13K50
• Core Architecture: PIC
• Core Sub-architecture: PIC18
• Silicon Family Name: Piccolo
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

© 2009 Microchip Technology Inc.
2.7.1
The CDC Serial Emulator firmware flow is shown in Figure 2-6.
FIGURE 2-6:
Overview of the CDC – Serial Emulator Firmware
RS232 OUT Buffer NOT EMPTY
USB OUT Buffer NOT EMPTY
RS232 OUT Buffer available
USB IN Buffer available
CDCTxService( )
FLOWCHART FOR CDC SERIAL EMULATOR CODE
EUSART is EMPTY
RS232 IN Buffer
NO
EUSART has
has data and
ProcessIO( )
NO
NO
NO
a byte
and
and
YES
YES
YES
YES
Copy USB IN Buffer to
Copy USB OUT Buffer
to RS232 OUT Buffer
Add byte to RS232
Copy next byte to
USB Buffer
EUSART
IN Buffer
DS41356B-page 29