R5S77631Y266BGV Renesas Electronics America, R5S77631Y266BGV Datasheet - Page 1045

• Manufacturer Part Number: R5S77631Y266BGV
• Description: IC SUPERH MPU ROMLESS 499BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7780r

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: -

23.4.7
In the E-DMAC, one to three bytes of padding can be inserted in any byte position of receive data
to improve software handling capability. By using this function, for instance, inserting 2-byte
padding after the MAC header (14 bytes) of Ethernet frame enables data following the MAC
header to set in 4-byte boundary.
Padding Insertion in Receive Data
16-byte boundary
16-byte boundary
16-byte boundary
16-byte boundary
16-byte boundary
16-byte boundary
[No padding]
[No padding]
Insert 2-byte padding after 14th byte
Figure 23.14 Padding Insertion in Receive Data
MAC header (14 bytes)
MAC header (14 bytes)
MAC header (14 bytes)
MAC header (14 bytes)
MAC header (14 bytes)
MAC header (14 bytes)
Receive buffer area
Receive buffer area
4 bytes
4 bytes
Section 23 Gigabit Ethernet Controller (GETHER)
Rev. 2.00 May 22, 2009 Page 975 of 1982
2 bytes padding inserted
after MAC header
Padding for separation
at 16-bytes boundary
Padding for separation
at 16 byte boundary
REJ09B0256-0200