R8A66597BG RENESAS [Renesas Technology Corp], R8A66597BG Datasheet - Page 145

• Manufacturer Part Number: R8A66597BG
• Description: ASSP (USB2.0 2 Port Host/1 Port Peripheral Controller)
• Manufacturer: RENESAS [Renesas Technology Corp]

R8A66597FP/DFP/BG
3.6.1.4 PING Packet Control in Data Stage and Status Stage
R e v 1 . 0 1
OUT direction PING packets are automatically sent out by the controller. When “PINGE=0” is set, the controller starts
the send direction transmission with the OUT packet. If a NAK or NYET is received in response to an OUT transaction,
a PING is sent. When an ACK handshake is received in response to the PING, the OUT packet is sent.
<<Start OUT Data Send>>
Usage with ”PINGE=0” setting is recommended.
Operations for “PINGE=1” setting are described in Section 3.7.1.
(1) Send OUT data packet
(2) Receive ACK handshake
(3) Send OUT data packet
(4) Receive NAK/NYET handshake
(5) Send PING packet
(6) Receive NAK handshake
(7) Send PING packet
(8) Receive ACK handshake
O c t 1 7 , 2 0 0 8
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