High Performance Two Port 10/100 Managed Ethernet Switch with
Datasheet
Table 4.2
STRAP NAME | DESCRIPTION | PIN / DEFAULT | |
VALUE | |||
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speed_strap_2 | Port 2 Speed Select Strap: Configures the default value | 1b | |
| for the Speed Select LSB (PHY_SPEED_SEL_LSB) bit in |
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| the PHY_BASIC_CTRL_2 register (See Section 14.4.2.1). |
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| When configured low, 10 Mbps is selected. When |
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| configured high, 100 Mbps is selected. |
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| This strap also affects the default value of the following bits: |
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| PHY_SPEED_SEL_LSB bit of the Port x PHY Basic |
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| (bit 5) bits of the Port x PHY |
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| MODE[2:0] bits of the Port x PHY Special Modes Register |
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| Refer to the respective register definition sections for |
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| additional information. |
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duplex_strap_2 | Port 2 Duplex Select Strap: Configures the default value | 1b | |
| for the Duplex Mode (PHY_DUPLEX) bit in the |
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| PHY_BASIC_CTRL_2 register (See Section 14.4.2.1). |
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| When configured low, |
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| configured high, |
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| This strap also affects the default value of the following bits: |
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| PHY_DUPLEX bit of the Port x PHY Basic Control |
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| MODE[2:0] bits of the Port x PHY Special Modes Register |
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| Refer to the respective register definition sections for |
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| additional information. |
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|
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BP_EN_strap_2 | Port 2 Backpressure Enable Strap: Configures the | 1b | |
| default value for the Port 2 Backpressure Enable |
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| (BP_EN_2) bit of the Port 2 Manual Flow Control Register |
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| (MANUAL_FC_2). When configured low, backpressure is |
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| disabled. When configured high, backpressure is enabled. |
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FD_FC_strap_2 | Port 2 | 1b | |
| Configures the default value of the Port 2 |
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| Duplex Receive Flow Control Enable (RX_FC_2) bits in the |
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| which are used when manual |
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| When configured low, |
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| and generation are disabled. When configured high, full- |
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| duplex Pause packet detection and generation are enabled. |
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Revision 1.4 | 44 | SMSC LAN9312 |
| DATASHEET |
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