Quadrature Encoder
CON16 Register
Version G.5
BitFlow, Inc.
NEO-4-11
QENC_INTRVL_
UL
R/W, CON16[23..0], Karbon, Neon
This register contains the upper limit value that is used to start acquisition when the
system is in interval mode (see QENC_INTRVL_MODE).
QENC_REAQ_
MODE
R/W, CON16[25..24], Karbon, Neon
This bit controls how the circuit that prevents re-acquisition from encoder jitter is
reset. Re-acquisition is prevented by keeping a list of lines that have been acquired,
and making sure that only lines that are not on the list are acquired. Once the entire
frame is acquired, there must be some way to reset the list, otherwise no new lines will
ever be acquired See QENC_NO_REAQ for more information.
The reset can be either automatic or manual. Manual modes require that the host
application software poke the QENC_RESET_REAQ bit when the reset is desired.
Automatic modes do not require host interaction, the reset will occur automatically
when the specified conditions are met.
QENC_RESET_
REAQ
WO, CON16[26], Karbon, Neon
This register is used to reset the circuit that prevents the re-acquisition of lines when
QENC_NO_REAQ is set to 1. Writing a 1 to this register deletes the list of acquired
lines, thus next time the lines are passed over, they will be acquired again. Writing to
this bit always resets the no re-acquistion circuit, regardless of the mode set by the
QENC_REAQ_MODE. However, the register QENC_REAQ_MODE can be used to set
the board in a mode where the no re-aquisition circuit is reset automatically every
pass over the image.
QENC_REAQ_MODE
Mode
Meaning
0 (00b)
Manual
Reset the list of acquired lines when
QENC_RESET_REAQ is poked to 1.
1 (01b)
Automatic
Reset the list of lines when the
encoder counter is outside of the
interval set by the upper limit and
lower limit. Whether the reset occurs
above the upper limit or below the
lower limit depends on the QENC_
AQ_DIR register.
2 (10b)
Reserved
3 (11b)
Reserved
Содержание NEO-PCE-CLB
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