R5S77631Y266BGV Renesas Electronics America, R5S77631Y266BGV Datasheet - Page 1062

• 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)
The program accesses MII registers via PIR. Access is implemented by a combination of 1-bit-unit
data write, 1-bit-unit data read, bus release, and independent bus release. Figure 23.33 shows the
MII register access timing. The timing will differ depending on the PHY-LSI type.
Rev. 2.00 May 22, 2009 Page 992 of 1982
REJ09B0256-0200
MII Register Access Procedure
(1)
(2)
(3)
Figure 23.34 Bus Release Flowchart (TA in Read in Figure 23.33)
(1)
(2)
(3)
Write to PHY interface
register
ET_MMD = 1
ET_MDO = write data
ET_MDC = 0
Write to PHY interface
register
ET_MMD = 1
ET_MDO = write data
ET_MDC = 1
Write to PHY interface
register
ET_MMD = 1
ET_MDO = write data
ET_MDC = 0
Write to PHY interface
register
ET_MMD = 0
ET_MDC = 0
Write to PHY interface
register
ET_MMD = 0
ET_MDC = 1
Write to PHY interface
register
ET_MMD = 0
ET_MDC = 1
Figure 23.33 1-Bit Data Write Flowchart
ET_MDC
ET_MDO
ET_MDC
ET_MDO
1-bit data write timing
relationship
(1) (2)
Bus release timing
relationship
(1) (2)
(3)
(3)