Renesas M30245 Series User Manual page 140

M30245 Group
SOF Packet: Packet to start the frame to be issued from the host for every 1ms.
8 bits
PID: SOF(0xA5)
Token Packet: Packet to be issued from the host at the time of transaction start.
8 bits
PID: OUT(0xE1),IN(0x69),SETUP(0x2D)
Data Packet: Packet to use at the time of data transfer.
8 bits
PID: DATA0(0xC3),DATA1(0x4B)
Hand Shake Packet: Packet to use at the transaction which controls flow.
8 bits
PID: ACK(0xD2),NAK(0xA5),STALL(0x1E)
Note: In each packet, there are SOP as start of packet, and EOP as end of packet.
Figure 2.8.2. Kinds of packet
Table 2.8.1. List of USB packet recognitions
PID type PID name
Token SETUP
IN
OUT
SOF
DATA DATA0
DATA1
Handshake ACK
NAK
STALL
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
8 bits 5 bits
PID Frame number CRC5
7 bits 4 bits
ADDR
PID ENDP
0 to 1034 bytes
PID DATA
PID
Process overview
Reports the operation request to device by the host CPU
Requests the data transmit to device by the host CPU
Requests the data receive to device by the host CPU
Indicates the start of frame to device by the host CPU
Indicates that the sequence bit of transmit/receive data is even number
Indicates that the sequence bit of transmit/receive data is odd number
Reports that the transmit data was correctly completed
Reports that the device is in the communication wait state
Reports that the communication was incorrectly completed
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5 bits
CRC5
16 bits
CRC16
2. USB function