HD6417712BPV Renesas Electronics America, HD6417712BPV Datasheet - Page 788

• Manufacturer Part Number: HD6417712BPV
• Description: MPU 1.5/3.3V 0K PB-FREE 256-BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH Ethernetr

Specifications of HD6417712BPV

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, Ethernet, FIFO, SCI, SIO
• Peripherals: DMA, POR, WDT
• Number Of I /o: 24
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Section 19 Ethernet Controller Direct Memory Access Controller (E-DMAC)
19.2.9
RMFCR is a 16-bit counter that indicates the number of frames missed (discarded, and not
transferred to the receive buffer) during reception. When the receive FIFO overflows, the receive
frames in the FIFO are discarded. The number of frames discarded at this time is counted. When
the value in this register reaches H′FFFF, counting-up is halted. When this register is read, the
counter value is cleared to 0. Write operations to this register have no effect.
Rev. 1.00 Dec. 27, 2005 Page 744 of 932
REJ09B0269-0100
Bit
31 to 16
15 to 0
Receive Missed-Frame Counter Register (RMFCR)
Bit Name

MFC15 to
MFC0
Initial
Value
All 0
All 0
R/W
R
R
Description
Reserved
These bits are always read as 0. The write value
should always be 0.
Missed-Frame Counter
Indicate the number of frames that are discarded and
not transferred to the receive buffer during reception.