R8A66597BG RENESAS [Renesas Technology Corp], R8A66597BG Datasheet - Page 64
R8A66597BG
Manufacturer Part Number
R8A66597BG
Description
ASSP (USB2.0 2 Port Host/1 Port Peripheral Controller)
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.R8A66597BG.pdf
(185 pages)
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R8A66597FP/DFP/BG
2.11.22.1 If the Host Controller function is selected, and the connection where a split transaction does not
occur
R e v 1 . 0 1
(1) When the pipe is transmitting: When any of the conditions from (a) to (c) are fulfilled, the controller detects the
(2) When the pipe is receiving:
O c t 1 7 , 2 0 0 8
NRDY interrupt.
(a) In an isochronous transfer type pipe, when the time reaches the Out-token issue timing where
(b) In a transfer type pipe that is not isochronous, and in communications other than a Setup transaction,
(c) In communications other than a Setup transaction, when a stall handshake is received from the
(a) In an isochronous transfer type pipe, the time reaches the In-token issue timing when there is no space
(b) In a transfer type pipe that is not isochronous, when a case occurs continuously three times in any
(c) In an isochronous transfer type pipe, when the Peripheral device does not respond to the In-token (a
(d) In an isochronous transfer type pipe, when a CRC error or bit stuffing error is detected in the received
(e) When a STALL handshake is received. In this case, the controller sets "1" in the PIPENRDY bit
transmission data does not exist in the FIFO buffer. Here, the controller sends a zero-length packet in
continuation with the Out-token, sets "1" to the bit corresponding to the PIPENRDY bit, and also sets "1"
to the OVRN bit.
when a case occurs continuously three times in any combination where a Peripheral device is idle (no
response) (detected timeout without detecting a handshake packet from the Peripheral device) or an
error has been detected in the Peripheral device packet. Here, the controller sets "1" to the PIPENRDY
bit and modifies the PID bit of the corresponding pipe to "NAK".
Peripheral device (STALL is related to OUT as well as PING). Here, the controller sets "1" to the bit
corresponding to the PIPENRDY bit, and modifies the PID bit of corresponding pipe to "STALL(11)".
in the FIFO buffer. Here, the controller deletes the reception data related to the In-token, sets "1" to the
PIPENRDY bit corresponding to the pipe, and also sets "1" in the OVRN bit. Moreover, when a packet
error is detected in the reception data related to the In-token, "1" is also set to the CRCE bit.
combination where the Peripheral device does not respond to the In-token issued by the controller
(detected a timeout without detecting a handshake packet from the Peripheral device) or an error is
detected in the Peripheral device packet. The controller sets "1" to the PIPENRDY bit corresponding to
the pipe, and modifies the PID bit of the corresponding pipe to "NAK".
timeout is detected without detecting a data packet from the Peripheral device), or when an error occurs
in the Peripheral device packet. In this case, the controller sets "1" to the PIPENRDY bit corresponding
to the pipe (the PID bit of the corresponding pipe is not modified).
packet. In this case, the controller sets "1" to the PIPENRDY bit corresponding to the pipe and sets "1"
to the CRCE bit.
corresponding to the pipe, and modifies the PID bit of the corresponding pipe to "1".
p a g e 6 4 o f 1 8 3
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