Difference: IPaddressAssignment (24 vs. 25)

Revision 2521 Mar 2016 - EricHazen

Line: 1 to 1

META TOPICPARENT	name="HcalDTC"

AMC13 IP and MAC Address Assignment

Line: 34 to 34

See https://twiki.cern.ch/twiki/bin/viewauth/CMS/CMSCommonMacAddresses.

Changed:

<
< For all AMC13XG with current firmware, the MAC address is in the range 08-00-30-F3-00-00 to 08-00-30-F3-01-FF with the low 9 bits as follows:

>
> Firmware review reveals-

Changed:

<
< bits 0-5 complement of serial number bits 0-5 bit 6 =0 for T2 board (lower IP) =1 for T1 board (upper IP) bit 7, 8 serial number bits 6, 7 (complemented for S/N > 64)

>
> nSN <= not SerialNumber; mac => x"080030f30" & "000" & not nSN(7 downto 6) & '0' & nSN(5 downto 0) #old T2 mac => x"080030f30" & '0' & not nSN(8) & '0' & not nSN(7 downto 6) & '0' & nSN(5 downto 0), #new T2 mac <= x"080030f30" & '0' & not nSN(8) & '0' & not nSN(7 downto 6) & '1' & nSN(5 downto 0); #all T1

Added:

>
> So all MAC addr start with 08-00-30-F3. The S/N bits are mapped to MAC address bits as follows:

Changed:

<
<

Example:

If we have a board with serial number 37, we can calculate the last digit of the MAC address:

63-37 = 26, which is 0x1a in hex

SN37 MAC addresses:

08-00-30-F3-00-1a (for T2, low IP)and

08-00-30-F3-00-5a (for T1, higher IP)

For modules with serial numbers above 63 the upper two bits are complemented and assigned to MAC address bits 7, 8.

example SN66 (0b01000010)

	bit 8	bit 7	bit 6	bit 5	bit 4	bit 3	bit 2	bit 1	bit0
66 (inserted)	0	1		0	0	0	0	1	0
	upper 2 bits			lower	six	bits
compliment	1	0		1	1	1	1	0	1
	Byte2	Byte 1				Byte 0
66 T2	1	0	0	1	1	1	1	0	1
66 T2	1	3				d
66 T1	1	0	1	1	1	1	1	0	1
66 T1	1	7				d

SN66 MAC addresses:

08-00-30-F3-01-3d (for T2, low IP)and

>
>

MAC	Source
5:0	not S/N( 5:0)
6	T2=0 T1=1
8:7	S/N( 7:6)
9	'0'
10	S/N( 8)
11	'0'

Changed:

<
< 08-00-30-F3-01-7d (for T1, higher IP)

>
> This results in a range of 00-00 to 01-FF for AMC13 serial# 0-255 and 04-00 to 05-FF for AMC13 serial# 256-511.

Deleted:

<
< -- EricHazen - 12 Mar 2014

\ No newline at end of file

Added:

>
> -- EricHazen - 21 Mar 2016

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