r8a66597 Renesas Electronics Corporation., r8a66597 Datasheet - Page 131

• Manufacturer Part Number: r8a66597
• Description: Assp Usb2.0 2 Port Host/1 Port Peripheral Controller
• Manufacturer: Renesas Electronics Corporation.

R8A66597FP/DFP/BG
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For control transfers when the Peripheral Controller function is selected, the controller automatically sets the sequence
bit for stage transitions.
In control transfers when the Peripheral Controller function is selected, the controller automatically sets the sequence
bit when the stage transitions. The bit goes to DATA0 when the setup stage completes, and responds with DATA1 in
the status stage. Therefore, the bit does not need to be set with software. In control transfers when the Host Controller
function is selected, the sequence bit must be set with software when the stage transitions.
Note that regardless of whether the Host or Peripheral function is selected, the data PID sequence bit must be set with
software when a ClearFeature request is sent or received.
Finally, the sequence bit cannot be controlled through the SQSET bit for the isochronous transfer setup pipe.
O c t 1 7 , 2 0 0 8
p a g e 1 3 1 o f 1 8 3