Threshold For Internal Clock; Unicast Address Registers - Intel IXP45X Developer's Manual

®
Ethernet MACs—Intel IXP45X and Intel
6.2.44

Threshold for Internal Clock

Register Name:
0xC80090E0
Hex Offset Address:
Register
Threshold for Internal Clock Register
Description:
Access: Read/Write.
31
Bits
31:8
7:0
6.2.45

Unicast Address Registers

Six registers make up the 48-bit Unicast Address:
• Unicast Address[47:40] — Unicast Address 1
• Unicast Address[39:32] — Unicast Address 2
• Unicast Address[31:24] — Unicast Address 3
• Unicast Address[23:16] — Unicast Address 4
• Unicast Address[15:8] — Unicast Address 5
• Unicast Address[7:0] — Unicast Address 6
Example: Unicast Address is 00-A0-24-D1-7F-02
• Unicast Address 1 = 0x00
• Unicast Address 2 = 0xA0
• Unicast Address 3 = 0x24
• Unicast Address 4 = 0xD1
• Unicast Address 5 = 0x7F
• Unicast Address 6 = 0x02
The detailed bit descriptions follow the six registers' bit maps.
August 2006
Order Number: 306262-004US
®
IXP46X Product Line of Network Processors
(Reserved)
Register
Name
(Reserved)
Holds ratio of PHY side clock (tx_clk or rx_clk) to sys_clk. PHY side clock
frequency/application clock frequency. Round up for value to be written to this
register.
Clock ratio
Example: 25 MHz PHY clock, 133 MHz application clock — Sets this register to
1. Any application, clock frequency greater than the tx_clk or rx_clk frequency
will have a clock ratio of 1. Always set to 1 for the IXP45X/IXP46X network
processors.
Intel
thresh_intclk
0x00000000
Reset Hex Value:
thresh_intclk
Description
® ®
IXP45X and Intel IXP46X Product Line of Network Processors
8 7
CLOCK RATIO
Developer's Manual
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