UPD70F3785GJ-GAE-AX Renesas Electronics America, UPD70F3785GJ-GAE-AX Datasheet - Page 1505

• Manufacturer Part Number: UPD70F3785GJ-GAE-AX
• Description: MCU 32BIT V850ES/JX3-E 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Er

Specifications of UPD70F3785GJ-GAE-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: 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: -

23.6 Data transmission
23.6.1 Buffer structure
Remark When transmitting packets continuously, make the area following the final buffer descriptor an end-of-
The buffers in the Ethernet controller of the V850ES/Jx3-E are made up of a buffer descriptor and a data buffer.
chain. DMA transmission will stop when the Ethernet controller of the V850ES/Jx3-E detects an end-of-
chain.
Figure 23-18. Buffer Structure of Ethernet controller(1/2)
Buffer descriptor
Status
Status
Status
Status
Status
Status
End of chain
CHAPTER 23 ETHERNET CONTROLLER
Size
Size
Size
Size
Size
Size
User’s Manual U19601EJ2V0UD
(a) At transmission
Address pointer
Address pointer
Address pointer
Address pointer
Address pointer
Link pointer
Size
Data buffer
Data
Data
Data
Data
Data
Size
Size
Size
Size
Size
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