K60P100M100SF2RM Datasheet, PDF (1167/1809 Pages) Freescale Semiconductor, Inc – K60 Sub-Family Reference Manual

Field
31–0
ATIME
Chapter 44 10/100-Mbps Ethernet MAC (ENET)
ENET_ATVR field descriptions
Description
A write sets the timer. A read returns the last captured value. To read the current value, issue a capture
command (set ATCR[CAPTURE]) prior to reading this register.
44.3.35 Timer Offset Register (ENET_ATOFF)
Address: ENET_ATOFF is 400C_0000h base + 408h offset = 400C_0408h
Bit 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
R
OFFSET
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ENET_ATOFF field descriptions
Field
31–0
OFFSET
Description
Offset value for one-shot event generation. When the timer reaches the value an event can be generated
to reset the counter. If the increment value in ATINC is given in true nanoseconds, this value is also given
in true nanoseconds.
44.3.36 Timer Period Register (ENET_ATPER)
Address: ENET_ATPER is 400C_0000h base + 40Ch offset = 400C_040Ch
Bit 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
R
PERIOD
W
Reset 0 0 1 1 1 0 1 1 1 0 0 1 1 0 1 0 1 1 0 0 1 0 1 0 0 0 0 0 0 0 0 0
ENET_ATPER field descriptions
Field
31–0
PERIOD
Description
Value for generating periodic events. Each instance the timer reaches this value, the period event occurs
and the timer restarts. If the increment value in ATINC is given in true nanoseconds, this value is also
given in true nanoseconds. The value should be initialized to 1,000,000,000 (1 x 10⁹) to represent a timer
wrap around of one second. The increment value set in ATINC should be set to the true nanoseconds of
the period of clock ts_clk, hence implementing a true 1 second counter.
K60 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc.
1167