R5S77631Y266BGV Renesas Electronics America, R5S77631Y266BGV Datasheet - Page 1065
R5S77631Y266BGV
Manufacturer Part Number
R5S77631Y266BGV
Description
IC SUPERH MPU ROMLESS 499BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7780r
Datasheet
1.R5S77631Y266BGV.pdf
(2056 pages)
Specifications of R5S77631Y266BGV
Core Processor
SH-4A
Core Size
32-Bit
Speed
266MHz
Connectivity
Audio Codec, I²C, MMC, SCI, SIM, SIO, SSI, USB
Peripherals
DMA, LCD, POR, WDT
Number Of I /o
107
Program Memory Type
ROMless
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.15 V ~ 1.35 V
Data Converters
A/D 4x10b; D/A 2x8b
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
499-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R5S77631Y266BGV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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23.6
23.6.1
This LSI is capable of calculating the checksum data of the received frames. Only the data fields
of the Ethernet frames are subject to calculation. Specifically, a data field follows the length/type
field and is followed by the CRC field. Calculation involves 16-bit addition only; it does not
involve bit reversal.
Note: Also for the frames with VLANTag inserted, the 15th byte from the top and the following
23.6.2
The TSU of this LSI supports up to 100BASE-T data transfers. Therefore, even when The TSU of
this LSI is used with 1000BASE-T, the transfer performance is equal to that with 100BASE-T.
bytes before the CRC field are subject to calculation.
Usage Notes
Checksum Calculation of Ethernet Frames
Notes on TSU Use
Schematic of an Ethernet frame
(without VLANtag)
Data (46 to 1500 bytes)
Destination address
Source address
CRC (4 bytes)
Type (2 bytes)
(6 bytes)
(6 bytes)
Figure 23.38 Data Subject to Checksum Calculation
Data subject to
checksum
calculation
Schematic of an Ethernet frame
(with VLANtag)
Section 23 Gigabit Ethernet Controller (GETHER)
Destination address
Source address
Data (60 bytes)
CRC (4 bytes)
Type (2 bytes)
VLANtag
(6 bytes)
(6 bytes)
(4 bytes)
Rev. 2.00 May 22, 2009 Page 995 of 1982
Data subject to
checksum
calculation
REJ09B0256-0200
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