UPD70F3785GJ-GAE-AX Renesas Electronics America, UPD70F3785GJ-GAE-AX Datasheet - Page 1492

• 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: -

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(3) Operations related to VLAN frame
The Ethernet controller detects a VLAN frame by comparing the TPID field in a receive/transmit packet with the
value of the VLAN type register (VLTP). Operations related to the VLAN frame are described next.
(a) Detection of VLAN frame
(b) Reception of VLAN frame
(c) Transmission of VLAN frame
The Ethernet controller constantly monitors the value of the 2-byte TPID field that follows the source
address in a receive packet.
During transmission, the value of the TPID field is checked when MACC2.APD or VPD is 1. The Ethernet
controller recognizes a packet whose TPID field matches the value of the VLAN type register (VLTP) as a
VLAN frame.
If the value of the TPID field of a received packet matches the value of the VLAN type register (VLTP), all
judgments concerning the frame size are made based on the VLAN frame size (MAX: 1,522 bytes, MIN: 64
bytes).
If a frame having a TPID field whose value matches the value of the VLAN type register (VLTP) is
transmitted from an upper layer when the MACC2.APD bit is 1, the frame is recognized as a VLAN frame
and is padded to increase the frame length to 68 bytes.
When the MACC2.VPD bit is 1, all frames are recognized as VLAN frames and are padded to increase the
frame length to 68 bytes.
CHAPTER 23 ETHERNET CONTROLLER
User’s Manual U19601EJ2V0UD