UPD70F3786GJ-GAE-AX Renesas Electronics America, UPD70F3786GJ-GAE-AX Datasheet - Page 1360

• Manufacturer Part Number: UPD70F3786GJ-GAE-AX
• Description: MCU 32BIT V850ES/JX3-E 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Er

Specifications of UPD70F3786GJ-GAE-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: CAN, CSI, EBI/EMI, Ethernet, I²C, UART/USART, USB
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 100
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 124K x 8
• Voltage - Supply (vcc/vdd): 2.85 V ~ 3.6 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

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22.9.7 Transmitting data for bulk transfer (IN) in DMA mode
controlled when DMA is used. Endpoint3 can also be controlled in the same sequence. To use this flowchart as the
control flow of Endpoint3, therefore, read the bit names of Endpoint1 in the flowchart as those of Endpoint3.
signal for Endpoint1, instead of an interrupt request (INTUSBF0), becomes active. This DMA request signal for
Endpoint1 operates according to the setting of the MODEn bit of the UF0IDR register (n = 0, 1). If all the data that can
be written to the UF0BI1 register has been written by DMA, the DMA request signal for Endpoint1 becomes inactive.
In this status, the toggle operation of the FIFO takes place and, if data for bulk transfer (IN) can be written, the DMA
request signal for Endpoint1 becomes active again. The automatic toggle operation of the FIFO is not executed even
if the FIFO has become full as a result of DMA transfer, unless the BKI1T bit of the UF0DEND register is set to 1.
Therefore, be sure to set the BKI1DED bit of the UF0DEND register to 1 to transfer data. If DMA is completed by the
DMA end signal for Endpoint1, the DQBI1MS bit of the UF0IDR register is cleared to 0, and the DMA request signal
for Endpoint1 becomes inactive. At the same time, the DMA_END interrupt request is issued. To transmit a short
packet at this time when the FIFO is not full, set the BKI1DED bit of the UF0DEND register to 1.
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Bulk transfer (IN) is allocated to Endpoint1 and Endpoint3. The flowchart shown below illustrates how Endpoint1 is
If data for bulk transfer (IN) can be written by setting the DQBI1MS bit of the UF0IDR register to 1, the DMA request
Cautions 1. The DMA request signal for Endpoint n (n = 1, 3) becomes active in the demand mode
(1) Initial settings for a bulk transfer (IN: EP1, EP3)
(a) Initial settings for DMAC
(b) Initial settings for EPC
- The DDAn registers (n = 0 to 3) are set to 00201000H (for EP1) or 00202000H (for EP3).
- The DADCn registers (n = 0 to 3) are set to 0020H.
- The DTFRn registers (n = 0 to 3) are set to 0000H.
- The UFDRQEN register is set up according to the DMA channel to be used.
- The UF0IDR register is set to 42H (for EP1) or 82H (for EP3) (demand mode).
- The UF0IM0.DMAEDM bit = 0
- The UF0IM2.BKI1NLM bit = 0 (for EP1)
- The UF0IM2.BKI1DTM bit = 0 (for EP1)
- The UF0IM2.BKI2NLM bit = 0 (for EP3)
- The UF0IM2.BKI2DTM bit = 0 (for EP3)
(8-bit transfer, transfer source address: incremental, transfer destination address: fixed)
(For details, see 21.6.10 (1) USBF DMA request enable register (UFDRQEN).)
2. The DMA request signal for Endpoint n (n = 1, 3) becomes active in the single mode (MODE1
(MODE1 and MODE0 bits of the UF0IDR register = 10), as long as data can be transferred.
and MODE0 bits of the UF0IDR register = 0X (X: don’t care)) if data can be transferred, but this
signal becomes inactive each time one byte has been transferred. This operation is repeated
until there is no more data to be transferred.
CHAPTER 22 USB FUNCTION CONTROLLER (USBF)
User’s Manual U19601EJ2V0UD