DF2211NP24V Renesas Technology / Hitachi Semiconductor, DF2211NP24V Datasheet - Page 572

• Manufacturer Part Number: DF2211NP24V
• Description: H8S/2200 Series, 2212 Group, USB, RTC, HSS TNP-64B; Vcc= 2.7 to 3.6 volts, Temp= -20 to 75 C; Package: PVQN0064LB-A
• Manufacturer: Renesas Technology / Hitachi Semiconductor

Rev.7.00 Dec. 24, 2008 Page 518 of 698
REJ09B0074-0700
(1) Transition from normal operation to stall
(2) When Clear Feature is sent after EPnSTL has been cleared
(3) When Clear Feature is sent before EPnSTL 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 14.20 Forcible Stall by Firmware
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
USB function module
To (2-1) or (3-1)
Reference
To (1-3)
To (1-2)
Stall
1 (SCME = 0)
EPnSTL
EPnSTL
EPnSTL
EPnSTL
EPnSTL
EPnSTL
EPnSTL
0 → 1
1 → 0
1
0
0
1
1. Set EPnSTL to 1 by
1. Receive IN/OUT
2. Refer to EPnSTL
1. SCME is set to 0
2. EPnSTL is set to 1
3. Set internal status
4. Transmit stall
1. Clear EPnSTL to 0
2. Receive IN/OUT
3. Internal status bit
4. EPnSTL is not
5. No change in
1. Transmit stall
1. Clear internal status
1. Clear internal status
2. No change in
firmware
token from the host
bit to 1
handshake
by firmware
token from the host
has been set to 1
referred to
internal status bit
handshake
bit to 0
bit to 0
EPnSTL bit