DS72030W200FPV Renesas Electronics America, DS72030W200FPV Datasheet - Page 1257

• 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

1. If IITV = 0
2. In any cases other than IITV = 0
Figure 23.18 shows an example of the buffer flush function of this module. When an unanticipated
token is received prior to the interval frame, this module sends the written data or a zero-length
packet according to the buffer state.
Figure 23.19 shows an example of this module generating an interval error. There are five types of
interval errors, as shown below. The interval error is generated at the timing indicated by (1) in the
figure, and the IN buffer flush function is activated.
If an interval error occurs during an IN transfers, the buffer flush function is activated; and if it
occurs during an OUT transfer, an NRDY interrupt is generated.
The OVRN bit should be used to distinguish between NRDY interrupts such as received packet
errors and overrun errors.
In response to tokens that are shaded in the figure, responses occur based on the buffer memory
status.
1. IN direction:
2. OUT direction:
The buffer flush operation starts from the next frame after the pipe becomes valid.
The buffer flush operation is carried out subsequent to the first normal transaction.
⎯ If the buffer is in the transmission enabled state, the data is transferred as a normal
⎯ If the buffer is in the transmission disabled state, a zero-length packet is sent and an
⎯ If the buffer is in the reception enabled state, the data is received as a normal response.
⎯ If the buffer is in the reception disabled state, the data is discarded and an overrun error
Buffer A
Buffer B
response.
underrun error occurs.
occurs.
Empty
Figure 23.18 Example of Buffer Flush Function Operation
Empty
Writing
Writing
Writing
ended
Writing ended
Transfer enabled
Section 23 USB 2.0 Host/Function Module (USB)
Rev. 3.00 Sep. 28, 2009 Page 1225 of 1650
Empty
Transfer enabled
Writing
REJ09B0313-0300
Writing
ended