DS72030W200FPV Renesas Electronics America, DS72030W200FPV Datasheet - Page 1255

• 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

After the interval counter has been initialized, the counter is started under the following conditions
1 or 2 when a packet has been transferred normally.
1. An SOF is received following transmission of data in response to an IN token, in the PID =
2. An SOF is received after data following an OUT token is received in the PID = BUF state.
The interval counter is not initialized under the conditions noted below.
1. When the PID bit is set to NAK or STALL
2. The USB is suspended
(4)
With isochronous data transmission using this module in function controller function, after data
has been written to the buffer memory, a data packet can be sent with the next frame in which an
SOF packet is detected. This function is called the isochronous transfer transmission data setup
function, and it makes it possible to designate the frame from which transmission began.
If a double buffer is used for the buffer memory, transmission will be enabled for only one of the
two buffers even after the writing of data to both buffers has been completed, that buffer memory
being the one to which the data writing was completed first. For this reason, even if multiple IN
tokens are received, the only buffer memory that can be sent is one packet's worth of data.
When an IN token is received, if the buffer memory is in the transmission enabled state, this
module transmits the data. If the buffer memory is not in the transmission enabled state, however,
a zero-length packet is sent and an underrun error occurs.
Figure 23.17 shows an example of transmission using the isochronous transfer transmission data
setup function with this module, when IITV = 0 (every frame) has been set. Sending of a zero-
length packet is displayed in the figure as Null, in a shaded box.
BUF state.
The interval timer does not stop. This module attempts the transactions at the subsequent
interval.
The IITV bit is not initialized. When the SOF has been received, the counter is restarted from
the value prior to the reception of the SOF.
Setup of Data to be Transmitted using Isochronous Transfer when the Function
Controller Function is Selected
Section 23 USB 2.0 Host/Function Module (USB)
Rev. 3.00 Sep. 28, 2009 Page 1223 of 1650
REJ09B0313-0300