EP80579 Datasheet, PDF (1643/1916 Pages) Intel Corporation – Intel® EP80579 Integrated Processor Product Line

Intel^® EP80579 Integrated Processor
41.6.1.3 Offset 0008h: TS_Addend - Addend Register
Register
Name
TS_Addend
Access
(See below.) Reset Value 0x0000_0000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Addend[31:0]
Table 41-13. Offset 0008h: TS_Addend Register
Description:
View: PCI
BAR: CSRBAR
Bus:Device:Function: M:7:0
Offset Start: 00000008h
Offset End: 0000000Bh
Size: 32 bits
Default: 0000h
Power Well: Core
Bit Range
31 : 0
Bit Acronym
Bit Description
Sticky
Addend
The Addend register contains the frequency scaling value
used by a firmware algorithm to achieve time
synchronization in the module. The value in this register is
added to the value in the Accumulator. When the
Accumulator rolls over, an overflow pulse is asserted and
increments system time. Because the Addend register is
cleared at reset, it must be written with a non-zero value
to allow system time to increment.
Bit Reset
Value
0h
Bit Access
RW
41.6.1.4 Offset 000Ch: TS_Accum - Accumulator Register
Register
Name
TS_Accum
Access
(See below.) Reset Value 0x0000_0000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Accumulator[31:0]
Table 41-14. Offset 000Ch: TS_Accum Register
Description:
View: PCI
BAR: CSRBAR
Bus:Device:Function: M:7:0
Offset Start: 0000000Ch
Offset End: 0000000Fh
Size: 32 bits
Default: 0000h
Power Well: Core
Bit Range
31 : 0
Bit Acronym
Bit Description
Sticky
Accumulator
The Accumulator register serves as the frequency divider
in the time synchronization logic. Firmware calculates a
frequency scaling value to be written to the Addend
register. The data in the Accumulator register is added to
the value in the Addend register once every period of the
system clock. When the Accumulator rolls over, an
overflow pulse is asserted which increments the value in
the system timer. This register is not read or written to in
normal operation.
Bit Reset
Value
0000h
Bit Access
RW
August 2009
Order Number: 320066-003US
Intel^® EP80579 Integrated Processor Product Line Datasheet
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