DF2170VTE33 Renesas Electronics America, DF2170VTE33 Datasheet - Page 382

• Manufacturer Part Number: DF2170VTE33
• Description: MCU 3V 256K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2170VTE33

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 33MHz
• Connectivity: SCI, USB
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 76
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Other names: HD64F2170VTE33; HD64F2170VTE33

5. Status Stage (Control-Out)
Rev. 2.00, 03/04, page 348 of 534
The control-out status stage starts with an IN token from the host. When an IN-token is
received at the start of the status stage, there is not yet any data in the EP0i FIFO, and so an
EP0i transfer request interrupt is generated. The firmware recognizes from this interrupt that
the status stage has started. Next, in order to transmit 0-length packet to the host, 0 is written in
the packet enable register 0i but no data is written to the EP0i FIFO. As a result, the next IN
token causes 0-length packet to be transmitted to the host, and control transfer ends.
After the firmware has finished all processing relating to the data stage, 0 should be written in
the packet enable register 0i.
Set EP0i transmit complete flag
End of control transfer
Is SETUP TS in IFR0
Transmit data to host
(EP0i TS in IFR0 = 1)
Receive IN token
in EP0i FIFO?
USB function
cleared to 0?
Valid data
Figure 12.9 Status Stage Operation (Control-Out)
Yes
Yes
ACK
No
No
NAK
NAK
Interrupt generated
generated
Interrupt
Write 0 to packet enable register 0i
prohibited (EP0i TR in IER0 = 0)
EP0i transfer request interrupt
End of control transfer
(EP0i TR in IFR0 = 0)
(EP0i TS in IFR0 = 0)
Clear interrupt flag
Clear interrupt flag
Firmware
(PKTE0i)