DS72030W200FPV Renesas Electronics America, DS72030W200FPV Datasheet - Page 1234

• Manufacturer Part Number: DS72030W200FPV
• Description: MPU, 32BIT, SH7203, ROMLESS, 240QFP
• Manufacturer: Renesas Electronics America
• Series: SH7200r

Specifications of DS72030W200FPV

• Core Size: 32bit
• Program Memory Size: 32KB
• Cpu Speed: 200MHz
• Digital Ic Case Style: QFP
• No. Of Pins: 240
• Supply Voltage Range: 1.1V To 1.3V
• Operating Temperature Range: -20°C To +85°C
• Svhc: No SVHC
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Section 23 USB 2.0 Host/Function Module (USB)
(f)
Either the continuous transfer mode or the non-continuous transfer mode can be selected, using the
CNTMD bit in DCPCFG and PIPEnCFG. This selection is valid for PIPE0 to PIPE5.
The continuous transfer mode function is a function that sends and receives multiple transactions
in succession. When the continuous transfer mode is set, data can be transferred without interrupts
being issued to the CPU, up to the buffer sizes assigned for each of the pipes.
In the continuous sending mode, the data being written is divided into packets of the maximum
packet size and sent. If the data being sent is less than the buffer size (short packet, or the integer
multiple of the maximum packet size is less than the buffer size), BVAL = 1 must be set after the
data being sent has been written.
In the continuous reception mode, interrupts are not issued during reception of packets up to the
buffer size, until the transaction counter has ended, or a short packet is received.
Figure 23.11 shows an example of buffer memory operation for this module.
Rev. 3.00 Sep. 28, 2009 Page 1202 of 1650
REJ09B0313-0300
Buffer Memory Operation (Continuous Transfer Setting)
When packet is received
When packet is sent
Max Packet Size
Max Packet Size
Unused area
Unused area
CNTMD = 0
CNTMD = 0
Figure 23.11 Example of Buffer Memory Operation
Transmission
Interrupt issued
enabled
When packet is received
When packet is sent
Max Packet Size
Max Packet Size
Max Packet Size
Max Packet Size
CNTMD = 1
CNTMD = 1
Transmission
Interrupt issued
enabled