lan9313 Standard Microsystems Corp., lan9313 Datasheet - Page 50

• Manufacturer Part Number: lan9313
• Description: Lan9313/lan9313i Three Port 10/100 Managed Ethernet Switch With Mii
• Manufacturer: Standard Microsystems Corp.

Revision 1.2 (04-08-08)
4.2.4.2
STRAP NAME
FD_FC_strap_mii
manual_FC_strap_mii
SQE_test_disable_strap_mii
mngt_mode_strap[1:0]
eeprom_type_strap
STRAP NAME
Hard-Straps
Hard-straps are latched upon Power-On Reset (POR) or pin reset (nRST) only. Unlike soft-straps,
hard-straps always have an associated pin and cannot be overridden by the EEPROM Loader. These
straps are used as either direct configuration values or as register defaults.
all hard-straps and their associated pin. These straps, along with their pin assignments are also fully
defined in
Table 4.2 Soft-Strap Configuration Strap Definitions (continued)
Chapter 3, "Pin Description and Configuration," on page
Table 4.3 Hard-Strap Configuration Strap Definitions
DESCRIPTION
Port 0(External MII) Full-Duplex Flow Control Enable
Strap: Configures the default of the TX_FC_MII and
RX_FC_MII bits in the
Control Register (MANUAL_FC_MII)
manual full-duplex flow control is selected. When
configured low, flow control is disabled on RX/TX. When
configured high, flow control is enabled on RX/TX.
Port 0(External MII) Manual Flow Control Enable Strap:
Configures the default value of the MANUAL_FC_MII bit in
the
(MANUAL_FC_MII). When configured low, flow control is
determined by Virtual Auto-Negotiation (if enabled). When
configured high, flow control is determined by TX_FC_MII
and RX_FC_MII bits in the
Flow Control Register
Note:
SQE Heartbeat Disable Strap: Configures the Signal
Quality Error (Heartbeat) test function by controlling the
default value of the SQEOFF (bit 0) of the
Special Control/Status Register
(VPHY_SPECIAL_CONTROL_STATUS). When configured
low, SQEOFF defaults to 0 and SQE test is enabled. When
configured high, SQEOFF defaults to 1 and SQE test is
disabled.
Serial Management Mode Strap: Configures the default
serial management mode.
00 = Unmanaged mode
01 = SMI Managed Mode
10 = I
11 = SPI Managed Mode
Refer to
additional information on the various modes of the
LAN9313/LAN9313i.
EEPROM Type Strap: Configures the EEPROM type.
0 = Microwire Mode
1 = I
Port 0(External MII) Manual Flow Control Register
2
C Mode
2
C Managed Mode
Section 2.3, "Modes of Operation," on page 23
In MAC mode, this strap is not used. In this mode,
the Virtual PHY is not applicable, and full-duplex
flow control must be controlled manually by the
host, based upon the external PHYs Auto-
negotiation results.
DATASHEET
DESCRIPTION
(MANUAL_FC_MII).
Port 0(External MII) Manual Flow
50
Port 0(External MII) Manual
which are used when
Three Port 10/100 Managed Ethernet Switch with MII
Virtual PHY
26.
for
Table 4.3
SMSC LAN9313/LAN9313i
PIN / DEFAULT
VALUE
FD_FC_MII
MANUAL_FC_MII
0b
MNGT_MODE[1:0]
EEPROM_TYPE
provides a list of
PIN
Datasheet