Cypress S6J3200 Series, Manual

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CHAPTER 21:Ethernet MAC
S6J3200 Series Hardware Manual Document Number: 002-04852 Rev. *G 747
4.91.
IEEE 1588 Timer Adjust Register (ETHERNETn_tsu_timer_adjust)
Description of IEEE 1588 Timer Adjust register is shown.
REGISTER_NAME ETHERNETn_tsu_timer_adjust
OFFSET 0x1D8
ACCESS_SIZE W
MULTIPLE
NUMERIC_TYPE
OTHER
BIT_OFFSET 31 30 29 28 27 26 25 24
BIT_NAME add_subtract Reserved increment_value[29:24]
ACCESS_TYPE R0,W R0,WX R0,W
PROT_TYPE Wp
INITIAL_VALUE 0 0 0x00
BIT_OFFSET 23 22 21 20 19 18 17 16
BIT_NAME increment_value[23:16]
ACCESS_TYPE R0,W
PROT_TYPE Wp
INITIAL_VALUE 0x00
BIT_OFFSET 15 14 13 12 11 10 9 8
BIT_NAME increment_value[15:8]
ACCESS_TYPE R0,W
PROT_TYPE Wp
INITIAL_VALUE 0x00
BIT_OFFSET 7 6 5 4 3 2 1 0
BIT_NAME increment_value[7:0]
ACCESS_TYPE R0,W
PROT_TYPE Wp
INITIAL_VALUE 0x00
[bit31] add_subtract:
Write as "1" to subtract from the IEEE 1588 Timer. Write as "0" to add to it.
[bit30] Reserved
Always read "0". Writing has no effect.
[bit29:0] increment_value: IEEE 1588 Timer increment value
The number of nanoseconds to increment or decrement the IEEE 1588 Timer Nanoseconds register. If
necessary the IEEE 1588 Timer Seconds register will be incremented or decremented.