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IP178C
Preliminary Data Sheet
Pin description
(continued)
Pin no.
LED.
89, 90,
91, 93,
96, 97,
99, 100
Label
Type
Description
LINK_LED [7:0]
O
LINK LED
The detail functions are illustrated in the following table. It
should be connected to VCC_O through a LED and a resistor.
Application circuit
VCC_O
LINK_LED
66, 67,
68, 69,
70, 71,
72, 73
75, 76,
77, 78,
79, 85,
86, 87
SPEED_LED [7:0]
O
SPEED LED
The detail functions are illustrated in the following table. It
should be connected to VCC_O through a LED and a resistor.
FDX LED
The detail functions are illustrated in the following table. It
should be connected to VCC_O through a LED and a resistor.
The function is valid only if pin 53 EXTMII_EN is pulled low.
LED function selection
The data on these pins are latched at the end of reset to
select LED modes. The default value is mode 3. The detail
functions are illustrated in the following table.
After reset, these two pins becomes MII interface TXEN and
TXD3 if pin 53 EXTMII_EN is pulled high.
FDX_LED [7:0]
O
80, 81
LED_SEL [1:0]
IPH2
LED_SEL [1:0]
00
LED mode
Mode 0
LINK_LED [7:0]
Off: link fail
On: 10 Mbps link ok
Flash: Tx/Rx
Off: link fail
On: link ok
Flash: Rx
Off: link fail
On: 10 Mbps link ok
Flash: Tx/Rx
Off: link fail
On: link ok
Flash: Tx/Rx
SPEED_LED [7:0]
Off: link fail
On: 100 Mbps link ok
Flash: Tx/Rx
Off: 10 Mbps
On: 100 Mbps
Off: link fail
On: 100 Mbps link ok
Flash: Tx/Rx
Off: 10 Mbps
On: 100 Mbps
FDX_LED [7:0]
Off: half duplex
On: full duplex
Off: half duplex
On: full duplex
Flash: collision
Off: half duplex
On: full duplex
Flash: collision
Off: half duplex
On: full duplex
Flash: collision
01
Mode 1
10
Mode 2
11 (default)
Mode 3
Copyright
2004, IC Plus Corp.
17/91
October 27, 2005
IP178C-DS-R09