SH7670 Datasheet, PDF (461/1292 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

Section 12 Ethernet Controller (EtherC)
Manual PAUSE Frame Transmission: PAUSE frames are transmitted by directives from the
software. When writing the Timer value to the manual PAUSE frame set register (MPR), manual
PAUSE frame transmission is started. With this method, PAUSE frame transmission is carried out
only once.
PAUSE Frame Reception: The next frame is not transmitted until the time indicated by the
Timer value elapses after receiving a PAUSE frame. However, the transmission of the current
frame is continued. A received PAUSE frame is valid only when the RXF bit in the EtherC mode
register (ECMR) is set to 1.
12.5 Connection to PHY-LSI
Figure 12.8 shows the example of connection to a DP83846AVHG by National Semiconductor
Corporation.
MII (Media Independent Interface)
This LSI
DP83846AVHG
TX-ER
MII_TXD3
MII_TXD2
MII_TXD1
MII_TXD0
TX-EN
TX-CLK
MDC
MDIO
MII_RXD3
MII_RXD2
MII_RXD1
MII_RXD0
RX-CLK
CRS
COL
RX-DV
RX-ER
TX_ER
TXD3
TXD2
TXD1
TXD0
TX_EN
TX_CLK
MDC
MDIO
RXD3
RXD2
RXD1
RXD0
RX_CLK
CRS
COL
RX_DV
RX_ER
Figure 12.8 Example of Connection to DP83846AVHG
Rev. 1.00 Nov. 14, 2007 Page 435 of 1262
REJ09B0437-0100