IP100A LF
Preliminary Data Sheet
44/97
March. 30, 2007
Copyright © 2004, IC Plus Corp.
IP100A LF-DS-R17
11.4.1 AsicCtrl
Class............................. LAN I/O Registers, Control and Status
Base Address ............... IoBaseAddress register value
Address Offset .............. 0x30
Default .........................0x00004000 (default values for LED Speed, LED, Mode, PhySpeed10,
PhySpeed100, PhyMedia are dependent on EEPROM settings, and
ForcedConfig[1..0], ForcedCon-fig[2] are dependent on ED signal pin states)
Width ............................ 32 bits
AsicCtrl provides chip-specific, non-host-related settings. The contents of the least significant byte of
AsicCtrl are read from EEPROM at reset.
BIT
BIT NAME
R/W
BIT DESCRIPTION
0
LEDFlashSpeed
R
The LED flahing Speed can be defined by this bit and could be
set by EEPROM only.
0: Fast Speed (5ms, 35ms).
1: Low Speed (20ms, 60ms).
1
LED Mode
R
The Bit decide LED Mode, could be set by EEPROM only.
Light Emitting Diode Mode. LEDMode is used to control the LED
signal pins functionality. When LEDMode is a logic 0 the LED
signal pins operate in LED mode 0. When LEDMode is a logic 1
the LED signal pins operate in LED mode 1.
Note:
When LED Mode 0 is set, the period of 1 cycle alternating
between logic 1/0 is 100ms. The LED ON period is 20ms and
OFF period is 80ms.
When LED Mode 1 is set, the period of 1 cycle alternating
between logic 1/0 is 200ms. The LED ON period is 40ms and
OFF period is 160ms.
LED
SIGNAL PIN
MODE 0
MODE 1
LED_LINK
This interface is not
functioning under MODE 0
Continuous logic 0 when
Ethernet link is valid.
LED_10N
Continuous logic 0 when
Ethernet link is operate at
10Mb/sec
Continuous logic 0
when Ethernet link is
operate at 10Mb/sec
LED_100N
Continuous logic 0 when
Ethernet link is operate at
100Mb/sec
Continuous logic 0
when Ethernet link is
operate at 100Mb/sec
LED
SIGNAL PIN
MODE 0
MODE 1
LED_TXN
Logic 0 indicates the
frames are transmitting
in progress, while logic 1
means no data is been
sent.
Logic 0 indicates the link
has established, while
logic 1 indicates link is
down. Alternating logic
1 and 0 indicates the
transmission or
receiving is in progress.
LED_RXN
Logic 0 indicates the
frames are been
received. Logic 1
indicates no frame is
Logic 0 indicates the link
has established, while
logic 1 indicates link is
down. Alternating logic
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