HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 846

• Manufacturer Part Number: HD6417641
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 20 USB Function Module
Rev. 4.00 Sep. 14, 2005 Page 796 of 982
REJ09B0023-0400
CPU
Host
USB
IN token
Figure 20.24 Timing for Setting the TR Interrupt Flag
Check NAK
NAK
Set TR flag
TR interrupt routine
Clear TR flag, Write transmit
data, and TRG/PKTE
IN token
Check NAK
NAK
Set TR flag
(flag is set again)
TR interrupt routine
IN token
transmission
Data
ACK