IP175A LF
Preliminary Data Sheet
17/60
February 20, 2006
Copyright © 2004, IC Plus Corp.
IP175A LF-DS-R08
Pin Descriptions (continued)
Pin no.
Label
Type
Description
EEPROM
53
SCL
I/O
After reset, it is used as clock pin SCL of EEPROM. Its period is
longer than 10us. IP175A LF stops reading EEPROM if it finds
there is no 55AA pattern in register 0. After reading EEPROM,
this pin becomes an input pin.
54
SDA
IO
After reset, it is used as data pin SDA of EEPROM. After reading
EEPROM, this pin becomes an input pin.
Pin no.
Label
Type
Description
LED
92, 91
LED_SEL[1:0]
IPH
LED output mode selection.
LED_SEL[1:0]=00: LED mode 0,
LED_SEL[1:0]=01: LED mode 1,
LED_SEL[1:0]=10: LED mode 2,
LED_SEL[1:0]=11: LED mode 3 (default)
110,
107,
104,
101, 96
LED_LINK[4:0]
O
Link, Activity (output after reset)
LED mode0: 100M Link + Activity (same as mode 2)
LED mode1: Receive activity
(1: not receiving, flash: receiving)
LED mode2, 100M Link + Activity
(1: 100M Link fail, 0: 100M Link ok and no activity, flash: 100M
Link ok and TX/RX activity)
LED mode3: Link + Activity
(1: link fail, 0: link ok, flash: Link ok and TX/ RX activity)
111,
108,
105,
102, 97
LED_SPEED[4:0]
O
Speed (output after reset)
LED mode0: (1: no collision, flash: collision) (note*)
LED mode1: (1: speed=10M, 0: speed=100M)
LED mode2: Full/half: (1: half, 0: full, flash: collision)
LED mode3: (1: speed=10M, 0: speed=100M)
112,
109,
106,
103, 100
LED_FULL[4:0]
O
Full/half, Link (output after reset)
LED mode0, 10M Link + Activity (same as mode 2)
LED mode1, Link: (1: Link fail, 0: Link ok)
LED mode2, 10M Link + Activity
(1: 10M Link fail, 0: 10M Link ok and no activity, flash: 10M Link
ok and TX/RX activity)
LED mode3: Full/half: (1: half, 0: full, flash: collision)
Note: LED_SPEED[0] shows collision information for all ports. LED_SPEED[4:1] is undefined.
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