HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 923

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

25.9.7
When using the USBF, be sure to set the peripheral clock (Pφ) at a frequency higher than 13 MHz.
CPU
Host
USB
Note on Clock Frequency
IN token
determination
Figure 25.20
NAK
NAK
TR flag setting
TR interrupt routine
TR flag
clearing
Set Timing of TR Interrupt Flag
Transmit data
writing
IN token
determination
NAK
NAK
TRG/
PKTE
(TR flag is set again)
TR flag setting
Section 25
Rev. 3.00 Jan. 18, 2008 Page 861 of 1458
TR interrupt routine
USB Function Controller (USBF)
IN token
transmission
Data
ACK
REJ09B0033-0300