SH7619 Datasheet, PDF (694/836 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7619 Series

Section 22 Ethernet Physical Layer Transceiver (PHY)
• MII signals
Signal Name Type
CO_MII_TXD0 I
CO_MII_TXD1 I
CO_MII_TXD2 I
CO_MII_TXD3 I
CO_TX_EN I
CO_RX_ER OO
(RXD4)
CO_COL
O
CO_MII_RXD0 O
CO_MII_RXD1 O
CO_MII_RXD2 O
CO_MII_RXD3 O
CO_TX_ER I
(TXD4)
CO_CRS
O
CO_RX_DV O
CO_TX_CLK O
CO_RX_CLK O
Description
Transmit Data 0: Bit 0 of the 4 data bits that are accepted by the
PHY for transmission.
Transmit Data 1: Bit 1 of the 4 data bits that are accepted by the
PHY for transmission.
Transmit Data 2: Bit 2 of the 4 data bits that are accepted by the
PHY for transmission.
Transmit Data 3: Bit 3 of the 4 data bits that are accepted by the
PHY for transmission.
Transmit Enable: Indicates that valid data is presented on the
CO_MII_TXD[3:0] signals, for transmission.
Receive Error: Asserted to indicate that an error was detected
somewhere in the frame presently being transferred from the PHY.
In Symbol Interface (5B Decoding) mode, this signal is the MII
Receive Data 4: the MSB of the received 5-bit symbol code-group.
MII Collision Detect: Asserted to indicate detection of collision
condition.
Receive Data 0: Bit 0 of the 4 data bits that are sent by the PHY in
the receive path.
Receive Data 1: Bit 1 of the 4 data bits that are sent by the PHY in
the receive path.
Receive Data 2: Bit 2 of the 4 data bits that sent by the PHY in the
receive path.
Receive Data 3: Bit 3 of the 4 data bits that sent by the PHY in the
receive path.
MII Transmit Error: When driven high, the 4B/5B encode process
substitutes the Transmit Error code-group (/H/) for the encoded
data word. This input is ignored in 10BaseT operation. In Symbol
Interface (5B Decoding) mode, this signal becomes the MII
Transmit Data 4: the MSB of the 5-bit symbol code-group.
Carrier Sense: Indicate detection of carrier.
Receive Data Valid: Indicates that recovered and decoded data
nibbles are being presented on CO_MII_RXD[3:0].
Transmit Clock: 25MHz in 100Base-TX mode. 2.5MHz in 10Base-T
mode.
Receive Clock: 25MHz in 100Base-TX mode. 2.5MHz in 10Base-T
mode.
Rev. 5.00 Mar. 15, 2007 Page 656 of 794
REJ09B0237-0500