UPD70F3786GJ-GAE-AX Renesas Electronics America, UPD70F3786GJ-GAE-AX Datasheet - Page 1514
UPD70F3786GJ-GAE-AX
Manufacturer Part Number
UPD70F3786GJ-GAE-AX
Description
MCU 32BIT V850ES/JX3-E 144-LQFP
Manufacturer
Renesas Electronics America
Series
V850ES/Jx3-Er
Datasheet
1.UPD70F3778GF-GAT-AX.pdf
(1817 pages)
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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
UPD70F3786GJ-GAE-AX
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Part Number:
UPD70F3786GJ-GAE-AX
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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RXDP/TXDP
(6) Descriptor chain
A descriptor is used to indicate the data buffer (of an undefined length) in a chain structure.
An image is as shown below.
At the memory addresses following a buffer descriptor (address + 8), either buffer descriptors are successively
allocated or a link pointer is allocated. The link pointer indicates the location address of the next buffer
descriptor. This combination makes up a descriptor chain.
The descriptor chain ends when an end of chain is set.
If an end of chain is detected before all receive packets are stored, the TBEI (RBEI) bit that reports a buffer
access error by using the INTETMTX (INTETMRX) interrupt is set to 1.
Two or more packets may be stored in one descriptor chain.
A ring shaped descriptor chain may be configured by specifying the memory address of the first buffer
descriptor by using the last link pointer.
(E bit = 0 indicates link to next descriptor)
(E bit = 1 indicates end of chain)
Buffer descriptor [1]
Buffer descriptor [2]
Buffer descriptor [a]
Buffer descriptor [b-1]
Buffer descriptor [b]
End of chain
Link pointer
Figure 23-24. Overview of Descriptor Chain
CHAPTER 23 ETHERNET CONTROLLER
Memory map
User’s Manual U19601EJ2V0UD
: Empty
: Packet
Data buffer [b-1]
Data buffer [b]
Data buffer [1]
Data buffer [2]
Data buffer [a]
Memory map
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