M66591GP Datasheet, PDF (95/133 Pages) Renesas Technology Corp – ASSP (USB2.0 Peripheral Controller)

M66591GP
USB bus
SETUP ADDR EP CRC5
DATA0 8 bytes data (CR) CRC16
ACK
IN
NAK
ADDR EP CRC5
IN
NAK
ADDR EP CRC5
IN
ADDR EP CRC5
DATA1 MAX packet size data CRC16
ACK
H/W state
S/W procedure
VALID='1'
PID="00"
CCPL='0'
Interrupt
CTRT='1'
CTSQ ="001"
CTRT='0'
VALID='0'
CTRT interrupt confirm
CTRT interrupt clear
VALID clear
Request data analysis
VALID='1'
VALID confirm
Write data to
C_FIFO
(BVAL='1')
PID = "01"
VALID='0'
Execute the following
processing on the basis of
the request data analysis
result.
1. Set the transmit data to
the C_FIFO
2. Set the response PID to
BUF ("01")
Abandon request data
analysis result
Wait for the next CTRT
interrupt
SETUP ADDR EP CRC5
DATA0 8 bytes data (CR) CRC16
ACK
IN
NAK
ADDR EP CRC5
VALID='1'
PID="00"
CCPL='0'
CTRT='1'
CTSQ ="001"
Interrupt
CTRT interrupt confirm
CTRT interrupt clear
VALID clear
Request data analysis
IN
NAK
ADDR EP CRC5
IN
ADDR EP CRC5
DATA1 MAX packet size data CRC16
ACK
Write data to
C_FIFO
(BVAL='1')
PID = "01"
VALID='1'
VALID confirm
VALID='0'
Execute the following
processing on the basis of
the request data analysis
result.
1. Clear theDCP FIFO buffer
2. Set the transmit data to
the C_FIFO
3. Set the response PID to
BUF ("01")
Abandon request data
analysis result
Wait for the next CTRT
interrupt
SETUP : SETUP PID
OUT : OUT PID
IN
: IN PID
ADDR : USB address (H'00~H'7F)
EP : Endpoint
CRC5 : 5 bitsCRC
DATA0 : DATA0 PID
DATA1 : DATA1 PID
CR : Control read transfer
CW : Control write transfer
ND : Control no data transfer
CRC16 : 16 bitsCRC
ACK : ACK PID
NAK : NAK PID
STALL : STALL PID
: Data to device from host
: Data to host from device
Figure 3.22 Examples of Setup Continuous Operations (2)
Rev.1.00 Nov. 30, 2004 page 95 of 131