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LAN9313 Datasheet(PDF) 47 Page - SMSC Corporation |
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LAN9313 Datasheet(HTML) 47 Page - SMSC Corporation |
47 / 398 page Three Port 10/100 Managed Ethernet Switch with MII Datasheet SMSC LAN9313/LAN9313i 47 Revision 1.2 (04-08-08) DATASHEET duplex_strap_1 Port 1 Duplex Select Strap: Configures the default value for the Duplex Mode (PHY_DUPLEX) bit in the PHY_BASIC_CTRL_1 register (See Section 13.2.2.1). When configured low, half-duplex is selected. When configured high, full-duplex is selected. This strap also affects the default value of the following bits: PHY_DUPLEX bit of the Port x PHY Basic Control Register (PHY_BASIC_CONTROL_x) 10BASE-T Full Duplex (bit 6) of the Port x PHY Auto- Negotiation Advertisement Register (PHY_AN_ADV_x) MODE[2:0] bits of the Port x PHY Special Modes Register (PHY_SPECIAL_MODES_x) Refer to the respective register definition sections for additional information. DUPLEX_1 BP_EN_strap_1 Port 1 Backpressure Enable Strap: Configures the default value for the Port 1 Backpressure Enable (BP_EN_1) bit of the Port 1 Manual Flow Control Register (MANUAL_FC_1). When configured low, backpressure is disabled. When configured high, backpressure is enabled. BP_EN_1 FD_FC_strap_1 Port 1 Full-Duplex Flow Control Enable Strap: Configures the default value of the Port 1 Full-Duplex Transmit Flow Control Enable (TX_FC_1) and Port 1 Full- Duplex Receive Flow Control Enable (RX_FC_1) bits in the Port 1 Manual Flow Control Register (MANUAL_FC_1), which are used when manual full-duplex control is selected. When configured low, full-duplex Pause packet detection and generation are disabled. When configured high, full- duplex Pause packet detection and generation are enabled. FD_FC_1 manual_FC_strap_1 Port 1 Manual Flow Control Enable Strap: Configures the default value of the Port 1 Full-Duplex Manual Flow Control Select (MANUAL_FC_1) bit in the Port 1 Manual Flow Control Register (MANUAL_FC_1). When configured low, flow control is determined by auto-negotiation (if enabled), and symmetric PAUSE is advertised (bit 10 of the Port x PHY Auto-Negotiation Advertisement Register (PHY_AN_ADV_x) is set). When configured high, flow control is determined by the Port 1 Full-Duplex Transmit Flow Control Enable (TX_FC_1) and Port 1 Full-Duplex Receive Flow Control Enable (RX_FC_1) bits, and symmetric PAUSE is not advertised (bit 10 of the Port x PHY Auto-Negotiation Advertisement Register (PHY_AN_ADV_x) is cleared). MANUAL_FC_1 auto_mdix_strap_2 Port 2 Auto-MDIX Enable Strap: Configures the default value for the Auto-MDIX functionality on Port 2 when the AMDIXCTL bit in the Port x PHY Special Control/Status Indication Register (PHY_SPECIAL_CONTROL_STAT_IND_x) is cleared. When configured low, Auto-MDIX is disabled. When configured high, Auto-MDIX is enabled. Note: If AMDIXCTL is set, this strap had no effect. AUTO_MDIX_2 manual_mdix_strap_2 Port 2 Manual MDIX Strap: Configures MDI(0) or MDIX(1) for Port 2 when the auto_mdix_strap_2 is low and the AMDIXCTL bit of the Port x PHY Special Control/Status Indication Register (PHY_SPECIAL_CONTROL_STAT_IND_x) is cleared. 0b Table 4.2 Soft-Strap Configuration Strap Definitions (continued) STRAP NAME DESCRIPTION PIN / DEFAULT VALUE |
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