UPD70F3786GJ-GAE-AX Renesas Electronics America, UPD70F3786GJ-GAE-AX Datasheet - Page 1493

• 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: -

23.5.5
controller. The DMAC in the Ethernet controller is used specifically for transmission and reception.
The dedicated DMA controller (DMAC) enables a DMA communication with the internal system bus of the Ethernet
All data to be transmitted and received is transferred by the DMAC in the Ethernet controller.
(1) DMA transfer mode
The following settings can be made by using the DMACM register.
Transfer mode
• Single transfer mode
• 4-beat incremental burst transfer mode
• 8-beat incremental burst transfer mode
• 16-beat incremental burst transfer mode
After the transfer mode has been set to the register, it will be applied from the next DMA transfer.
Cautions 1. A burst transfer mode of undefined length cannot be set to the register.
Dedicated DMAC
2. The register that sets the transfer mode is not locked during DMA transfer. If the setting
Undefined length burst transfer is automatically used by the Ethernet controller to
process fractional data.
This mode cannot be intentionally used to transfer all transfer data.
of this register is changed during DMA transfer, therefore, the current DMA cycle
becomes illegal. Do not change the set value of the register during DMA transfer (when
RXEN_STA = 1 or TXEN_STA = 1).
CHAPTER 23 ETHERNET CONTROLLER
User’s Manual U19601EJ2V0UD
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