Cypress MicroSystems CY8C25122/CY8C26233/CY8C26443/CY8C26643 Family Data Sheet
82
Document #: 38-12010 CY Rev. ** CMS Rev. 3.20
September 5, 2002
10.8.2.3
Analog Continuous Time Type A Block xx Control 2 Register
CPhase controls which internal clock phase the compar-
ator data is latched on.
CLatch controls whether the latch is active or if it is
always transparent.
CompCap controls whether the compensation capacitor
is switched in or not in the op-amp. By not switching in
the compensation capacitance, a much faster response
can be obtained if the amplifier is being used as a com-
parator.
TestMux – selects block bypass mode for testing and
characterization purposes.
Power – encoding for selecting 1 of 4 power levels. The
blocks always power up in the off state.
Analog Continuous Time Block 00 Control 2 Register (ACA00CR2, Address = Bank 0/1, 73h)
Analog Continuous Time Block 01 Control 2 Register (ACA01CR2, Address = Bank 0/1, 77h)
Analog Continuous Time Block 02 Control 2 Register (ACA02CR2, Address = Bank 0/1, 7Bh)
Analog Continuous Time Block 03 Control 2 Register (ACA03CR2, Address = Bank 0/1, 7Fh)
Table 67:
Analog Continuous Time Type A Block xx Control 2 Register
Bit #
7
6
5
4
3
2
1
0
POR
0
0
0
0
0
0
0
0
Read/
Write
RW
RW
RW
RW
RW
RW
RW
RW
Bit Name
CPhase
CLatch
CompCap TestMux[2] TestMux[1] TestMux[0]
Power[1]
Power[0]
Bit 7
: CPhase
0 = Comparator Control latch transparent on PHI1
1 = Comparator Control latch transparent on PHI2
Bit 6
: CLatch
0 = Comparator Control latch is always transparent
1 = Comparator Control latch is active
Bit 5
: CompCap
0 = Comparator Mode
1 = Op-amp Mode
Bit [4:2]
: TestMux [2:0] Select block bypass mode for testing and characterization purposes
ACA00
ACA01
ACA02
ACA03
1 0 0 = Positive Input to…ABUS0
ABUS1
ABUS2
ABUS3
1 0 1 = AGND to…
ABUS0
ABUS1
ABUS2
ABUS3
1 1 0 = REFLO to…
ABUS0
ABUS1
ABUS2
ABUS3
1 1 1 = REFHI to…
ABUS0
ABUS1
ABUS2
ABUS3
0 x x = All Paths Off
Bit [1:0]
: Power [1:0] Encoding for selecting 1 of 4 power levels
0 0 = Off
0 1 = Low (60 µA)
1 0 = Med (150 µA)
1 1 = High (500 µA)
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