LAN9303MI-AKZE Standard Microsystems (SMSC), LAN9303MI-AKZE Datasheet - Page 144

• Manufacturer Part Number: LAN9303MI-AKZE
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LAN9303MI-AKZE

• Lead Free Status / Rohs Status: Compliant

Revision 1.4 (07-07-10)
12.3.1
(GPIO1)
(GPIO0)
LED1
LED0
The various LED indication functions shown in
LED Function Definitions when LED_FUN[1:0] = 00b, 01b, or 10b
When
When
apply:
“Active” is defined as the pin being driven to the opposite value latched at reset on the
led_pol_strap[5:0]
detailed in
via soft-straps.
“Inactive” is defined as the pin not being driven.
The input buffers and pull-ups are disabled on the shared GPIO/LED pins.
TX Port 0/1 - The signal is pulsed active for 80mS to indicate activity from the Switch Fabric to the
external MII pins. This signal is then made inactive for a minimum of 80mS, after which the process
will repeat if TX activity is again detected.
Note: Link indication does not affect this function.
RX Port 0/1 - The signal is pulsed active for 80mS to indicate activity from the external MII pins
to the Switch Fabric. This signal is then made inactive for a minimum of 80mS, after which the
process will repeat if RX activity is again detected.
Note: Link indication does not affect this function.
Activity Port 0/1 - The signal is pulsed active for 80mS to indicate transmit or receive activity on
the port. The signal is then made inactive for a minimum of 80mS, after which the process will
repeat if RX or TX activity is again detected.
Note: The idle condition is inactive in contrast to that of the Link / Activity function.
Note: Link indication does not affect this function.
(if Port 1 internal PHY
(if Port 1 internal PHY
(if Port 1 internal PHY
(if Port 1 internal PHY
Full-duplex / Collision
LED Function 1-0 (LED_FUN[1:0])
LED Function 1-0 (LED_FUN[1:0])
Table 12.1 LED Operation as a Function of LED_FUN[1:0] (continued)
disabled)
disabled)
enabled)
enabled)
Inactive
Activity
Speed
Port 1
Port 1
Port 0
00b
Section 4.2.4, "Configuration Straps," on page
LED polarity hard-straps. LED polarity is determined by these hard-straps as
(if Port 1 internal PHY
(if Port 1 internal PHY
(if Port 1 internal PHY
(if Port 1 internal PHY
Full-duplex / Collision
Small Form Factor Three Port 10/100 Managed Ethernet Switch with Dual MII/RMII/Turbo MII
10Link / Activity
DATASHEET
disabled)
disabled)
enabled)
enabled)
Inactive
Activity
Port 1
Port 1
Port 0
01b
is 00b, 01b, or 10b, the following LED rules apply:
144
is 00b, 01b, or 10b, the following LED function definitions
Table 12.1
(if Port 1 internal PHY
(if Port 1 internal PHY
(if Port 1 internal PHY
(if Port 1 internal PHY
Link / Activity
are described in the following sections.
disabled)
disabled)
enabled)
enabled)
51. The LED polarity cannot be modified
Speed
Port 1
Port 1
Port 1
Port 1
10b
RX
TX
SMSC LAN9303M/LAN9303Mi
RX_DV
TX_EN
Port 1
Port 1
11b
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