VSC8658 datasheet(67/95 Pages) MICROSEMI

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Configuration

VMDS-10242 VSC8658 Datasheet Revision 4.1

5.6.2

Read/Write Access to the EEPROM

The VSC8658 device also has the ability to read from and write to an EEPROM such as an ATMEL

AT24CXXX that is directly connected to its EECLK and EEDAT pins. If it is required to be able to write to

K+1

Common_Config_Base_Address[7:0] (X)

K+2

00000, PHY0_Specific_Config_Base_Address[10:8]

K+3

PHY0_Specific_Config_Base_Address[7:0] (Y)

K+4

00000, PHY1_Specific_Config_Base_Address[10:8]

K+5

PHY1_Specific_Config_Base_Address[7:0]

K+6

00000, PHY2_Specific_Config_Base_Address[10:8]

K+7

PHY2_Specific_Config_Base_Address[7:0]

Address length not specified

K+16

00000, PHY7_Specific_Config_Base_Address[10:8]

K+17

PHY7_Specific_Config_Base_Address[7:0]

Address length not specified

00000, Total_Number_Bytes[10:8]

X+1

Total_Number_Bytes [7:0] (M)

X+2

X+3

Data[15:8] to be written to register address a

X+4

Data[7:0] to be written to register address a

X+5

X+6

Data[15:8] to be written to register Address b

X+7

Data[7:0] to be written to register address b

Address length not specified

X+(M-2)

X+(M-1)

Data[15:8] to be written to register address x

X+M

Data[7:0] to be written to register address x

Address length not specified

00000, Total_Number_Bytes[10:8]

Y+1

Total_Number_Bytes [7:0] (N)

Y+2

Y+3

Data[15:8] to be written to register address a

Y+4

Data[7:0] to be written to register address a

Address length not specified

Y+(N-2)

Y+(N-1)

Data[15:8] to be written to register address x

Y+N

Data[7:0] to be written to register address x

Address length not specified

Max Address

Table 61 •

EEPROM Configuration Contents (continued)

10-bit Address

Content (Bits 7:0)

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