UPD70F3785GJ-GAE-AX Renesas Electronics America, UPD70F3785GJ-GAE-AX Datasheet - Page 1379

• 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: -

13 to 8
3 to 0
(5) CLRT: Collision register
Caution Be sure to set bits 31 to 14 and 7 to 4 to “0”.
Bit
Access
Address
Default value 0000 380FH. This register is cleared to its default value by all types of resets.
LCOL
RETRY
31
23
15
Name
R
R
R
R
0
0
0
7
0
This register can be read and written in 32-bit units.
002E 0010H
Collision window
These bits set the collision window width. The width of the collision window to be set is calculated
by the following expression.
• Collision window width = (LCOL + 8) x time required to transmit 8 bits
The specification of IEEE802.3 is that the collision window width is time required to transmit 512
bits.
Maximum number of times of retransmission in case of collision
These bits set the maximum number of times retransmission is executed when a collision occurs. If
retransmission is not completed within the value set by these bits, transmission is aborted. This
value indicates the maximum number of collisions.
The specification of IEEE802.3 is that the maximum number of collisions is 15.
30
22
14
R
R
R
R
0
0
0
6
0
CHAPTER 23 ETHERNET CONTROLLER
R/W
29
21
13
R
R
R
0
0
5
0
User’s Manual U19601EJ2V0UD
R/W
28
20
12
R
R
R
0
0
4
0
R/W
R/W
27
19
11
R
R
0
0
3
Description
LCOL
R/W
R/W
26
18
10
R
R
0
0
2
RETRY
R/W
R/W
25
17
R
R
0
0
9
1
R/W
R/W
24
16
R
R
0
0
8
0
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