HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 831

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

(1) Transition from normal operation to stall
(2) When Clear Feature is sent after USBEPSTL is cleared
(3) When Clear Feature is sent before USBEPSTL is cleared to 0
(1-1)
(1-2)
(1-3)
(2-1)
(2-2)
(2-3)
(3-1)
Transaction request
STALL handshake
Transaction request
STALL handshake
Clear Feature command
Clear Feature command
USB
Figure 20.13 Forcible Stall by Application
Internal status bit
Internal status bit
Internal status bit
Internal status bit
Internal status bit
Internal status bit
Internal status bit
0 → 1
1 → 0
1 → 0
0
0
1
1
Normal status restored
To (2-1) or (3-1)
Reference
To (1-2)
Stall
USBEPSTL
USBEPSTL
USBEPSTL
USBEPSTL
USBEPSTL
USBEPSTL
USBEPSTL
0 → 1
1 → 0
Rev. 4.00 Sep. 14, 2005 Page 781 of 982
1
1
0
0
1
Section 20 USB Function Module
1. 1 written to
1. IN/OUT token
2. USBEPSTL
1. 1 set in USBEPSTL
2. Internal status bit
3. Transmission of
1. USBEPSTL cleared
2. IN/OUT token
3. Internal status bit
4. USBEPSTL not
5. Internal status bit
1. Transmission of
1. Internal status bit
1. Internal status bit
2. USBEPSTL not
USBEPSTL by
application
received from host
referenced
set to 1
STALL handshake
to 0 by application
received from host
already set to 1
referenced
not changed
STALL handshake
cleared to 0
cleared to 0
changed
REJ09B0023-0400