R5S77631Y266BGV Renesas Electronics America, R5S77631Y266BGV Datasheet - Page 1064

• 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: -

Section 23 Gigabit Ethernet Controller (GETHER)
(2)
Waveforms received from the RMII interface are converted to MII waveforms and output (10
Mbps or 100 Mbps). Illegal carrier detection signal received from the RMII interface is converted
to MII signal and output. RMII_RX-ER signal received from the RMII interface is converted to
MII interface signal and output.
Note: Illegal carrier detection is not generated from preamble detection to reception completion
(3)
Transmit waveforms from the MII interface is converted to the RMII interface waveforms and
output (10 Mbps or 100 Mbps). The collision signal, ET_COL, is generated by AND operation of
the ET_CRS and ET_TX-EN signals.
(4)
In full-duplex transfer mode, the assertion of the COL is suppressed. Figure 23.37 shows a
schematic of the conversion circuit.
Rev. 2.00 May 22, 2009 Page 994 of 1982
REJ09B0256-0200
Reception
Transmission
Full-Duplex/Half-Duplex Selection
(ET_RX_DV negation).
ET_TX-EN
ET_ETXD0
ET_COL
ET_CRS
ET_RX-DV
ET_ERXD3 to
ET_ERXD0
ET_TX-ER
ET_TX-CLK
ET_RX-CLK
ET_ETXD3 to
Figure 23.37 MII-RMII Conversion Circuit
MII-RMII conversion
Half-duplex/full-duplex
2 bit-to-4 bit
conversion
False carrier
detection
4 bit-to-2 bit
conversion
CRS and
RX_DV
generation
Clock
generation
D
D
REF50CK
RMII_TX-EN
RMII_TXD1
RMII_TXD0
RMII_CRS-DV
RMII_RXD1
RMII_RXD0
RMII_RX-ER