LAN9303MI-AKZE Datasheet, PDF (146/386 Pages) SMSC Corporation – Small Form Factor Three Port 10/100 Managed Ethernet Switch with Dual MII/RMII/Turbo MII

Small Form Factor Three Port 10/100 Managed Ethernet Switch with Dual MII/RMII/Turbo MII
Datasheet
Table 12.1 LED Operation as a Function of LED_FUN[1:0] (continued)
00b
01b
10b
11b
LED1
(GPIO1)
Full-duplex / Collision
Port 1
(if Port 1 internal PHY
enabled)
Full-duplex / Collision
Port 1
(if Port 1 internal PHY
enabled)
Link / Activity
Port 1
(if Port 1 internal PHY
enabled)
TX_EN
Port 1
Inactive
(if Port 1 internal PHY
disabled)
Inactive
(if Port 1 internal PHY
disabled)
TX
Port 1
(if Port 1 internal PHY
disabled)
LED0
(GPIO0)
Speed
Port 1
(if Port 1 internal PHY
enabled)
10Link / Activity
Port 1
(if Port 1 internal PHY
enabled)
Speed
Port 1
(if Port 1 internal PHY
enabled)
RX_DV
Port 1
Activity
Port 0
(if Port 1 internal PHY
disabled)
Activity
Port 0
(if Port 1 internal PHY
disabled)
RX
Port 1
(if Port 1 internal PHY
disabled)
The various LED indication functions shown in Table 12.1 are described in the following sections.
12.3.1
LED Function Definitions when LED_FUN[1:0] = 00b, 01b, or 10b
When LED Function 1-0 (LED_FUN[1:0]) is 00b, 01b, or 10b, the following LED rules apply:
„ “Active” is defined as the pin being driven to the opposite value latched at reset on the
led_pol_strap[5:0] LED polarity hard-straps. LED polarity is determined by these hard-straps as
detailed in Section 4.2.4, "Configuration Straps," on page 52. The LED polarity cannot be modified
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.
When LED Function 1-0 (LED_FUN[1:0]) is 00b, 01b, or 10b, the following LED function definitions
apply:
„ 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.
Revision 1.5 (07-08-11)
146
DATASHEET
SMSC LAN9303M/LAN9303Mi