Freescale Semiconductor Enhanced serial module TWR-SER2 TWR-SER2 TWR-SER2 ユーザーズマニュアル
製品コード
TWR-SER2
TWR-SER2 User’s Manual
Page 15 of 17
4 Configuration Settings
There are several jumpers provided for isolation, configuration, and feature selection. Refer to the
following table for details. The default installed jumper settings are shown in *bold*.
following table for details. The default installed jumper settings are shown in *bold*.
4.1 Switch Settings
Switch Options
Setting
Description
SW1
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Dip 1
*On*
Enables RMII mode for Ethernet PHY A
Off
Enables MII mode for Ethernet PHY A
Dip 2
*On*
Connects RX_CRS to RMII0_CRS_DV (required for RMII operation)
Off
Disconnects RX_CRS from RMII0_CRS_DV (required for MII operation)
Dip 3
On
Connects RX_CRS to MII_CRS (required for MII operation)
*Off*
Disconnects RX_CRS from MII_CRS (required for RMII operation)
Dip 4
On
Connects RX_DV to MII_RXDV (required for MII operation)
*Off*
Disconnects RX_DV from MII_RXDV (required for RMII operation)
Dip 5
On
Enables Dual PHY Extender Mode
*Off*
Disables Extender Mode
Dip 6
On
PHY A - Auto Negotiation (Use AN0/AN1 to set highest capability)
*Off*
PHY A - Forced Mode (Use AN0/AN1 to set forced mode)
Dip 7
On
AN0_A - Full-Duplex on PHY A
*Off*
AN0_A - Half-Duplex on PHY A
Dip 8
On
AN1_A - 100Base-TX on PHY A
*Off*
AN1_A - 10Base-T on PHY A
SW2
Eth
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Dip 1
*On*
Enables RMII mode for Ethernet PHY B
Off
Enables MII mode for Ethernet PHY B
Dip 2
On
Connects CLOCKOUT0 to Ethernet PHY Clock
*Off*
Isolates CLOCKOUT0 from Ethernet PHY Clock
Dip 3
*On*
Connects onboard 50MHz clock to Ethernet PHY Clock
Off
Isolates onboard 50MHz clock from Ethernet PHY Clock
Dip 4
On
Connects onboard 25MHz clock to Ethernet PHY Clock
*Off*
Isolates onboard 25MHz clock from Ethernet PHY Clock
Dip 5
On
Disables onboard 25MHz / 50MHz clock
*Off*
Enables onboard 25MHz / 50MHz clock
Dip 6
On
PHY B - Auto Negotiation (Use AN0/AN1 to set highest capability)
*Off*
PHY B - Forced Mode (Use AN0/AN1 to set forced mode)
Dip 7
On
AN0_B - Full-Duplex on PHY B
*Off*
AN0_B - Half-Duplex on PHY B
Dip 8
On
AN1_B - 100Base-TX on PHY B
*Off*
AN1_B - 10Base-T on PHY B
Figure 3 - TWR-SER2 Switch Settings