Cypress MicroSystems CY8C25122/CY8C26233/CY8C26443/CY8C26643 Family Data Sheet
80
Document #: 38-12010 CY Rev. ** CMS Rev. 3.20
September 5, 2002
inverting op-amp input) or for loss (center tap to output of
the block). Note that setting Gain alone does not guaran-
tee a gain or loss block. Routing of the other ends of the
resistor determine this.
Note that connections between GIN and GOUT, and LIN
and LOUT are automatically resolved by PSoC Designer
when they are set in a differential configuration with an
adjacent CT block.
Analog Continuous Time Block 00 Control 0 Register (ACA00CR0, Address = Bank 0/1, 71h)
Analog Continuous Time Block 01 Control 0 Register (ACA01CR0, Address = Bank 0/1, 75h)
Analog Continuous Time Block 02 Control 0 Register (ACA02CR0, Address = Bank 0/1, 79h)
Analog Continuous Time Block 03 Control 0 Register (ACA03CR0, Address = Bank 0/1, 7Dh)
Table 65:
Analog Continuous Time Block xx Control 0 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
RTap-
Mux[3]
RTap-
Mux[2]
RTap-
Mux[1]
RTap-
Mux[0]
Gain
RTopMux
RBotMux[1]
RBotMux[0]
Bit [7:4]
: RTapMux [3:0] Encoding for selecting 1 of 16 resistor taps
0 0 0 0 = Rf 15 = Ri 01 = Loss .0625 / Gain 16.00
0 0 0 1 = Rf 14 = Ri 02 = Loss .1250 / Gain 8.000
0 0 1 0 = Rf 13 = Ri 03 = Loss .1875 / Gain 5.333
0 0 1 1 = Rf 12 = Ri 04 = Loss .2500 / Gain 4.000
0 1 0 0 = Rf 11 = Ri 05 = Loss .3125 / Gain 3.200
0 1 0 1 = Rf 10 = Ri 06 = Loss .3750 / Gain 2.667
0 1 1 0 = Rf 09 = Ri 07 = Loss .4375 / Gain 2.286
0 1 1 1 = Rf 08 = Ri 08 = Loss .5000 / Gain 2.000
1 0 0 0 = Rf 07 = Ri 09 = Loss .5625 / Gain 1.778
1 0 0 1 = Rf 06 = Ri 10 = Loss .6250 / Gain 1.600
1 0 1 0 = Rf 05 = Ri 11 = Loss .6875 / Gain 1.455
1 0 1 1 = Rf 04 = Ri 12 = Loss .7500 / Gain 1.333
1 1 0 0 = Rf 03 = Ri 13 = Loss .8125 / Gain 1.231
1 1 0 1 = Rf 02 = Ri 14 = Loss .8750 / Gain 1.143
1 1 1 0 = Rf 01 = Ri 15 = Loss .9375 / Gain 1.067
1 1 1 1 = Rf 00 = Ri 16 = Loss 1.000 / Gain 1.000
Bit 3
: Gain Select gain or loss configuration for output tap
0 = Loss
1 = Gain
Bit 2
: RTopMux Encoding for feedback resistor select
0 = Rtop to Vcc
1 = Rtop to op-amp’s output
Bit [1:0]
: RBotMux [1:0] Encoding for feedback resistor select
0 0 =
0 1 =
1 0 =
1 1 =
ACA00
ACA01
AGND
Vss
ASA10
ACA01
ACA00
AGND
Vss
ASB11
ACA02
ACA03
AGND
Vss
ASA12
ACA03
ACA02
AGND
Vss
ASB13
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