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Analog PSoC Blocks
September 5, 2002
Document #: 38-12010 CY Rev. ** CMS Rev. 3.20
101
10.13 Analog I/O
10.13.1
Analog Input Muxing
10.13.2 Analog Input Select Register
This register controls the analog muxes that feed signals
in from port pins into each Analog Column. Each of the
Analog Columns can have up to four port bits connected
to its muxed input. Analog Columns 01 and 02 (ACI1 and
ACI2) have additional muxes that allow selection
between separate column multiplexers (see Analog Input
Muxing diagram above). The AC1Mux and AC2Mux bit
fields control the bits for those muxes and are located in
the Analog Output Buffer Control Register (ABF_CR).
There are four additional analog inputs that go directly
into the Switch Capacitor PSoC blocks.
Figure 26: Analog Input Muxing
P2[0]
P2[2]
P2[1]
P2[3]
ACA00
ACA03
ACA02
ACA01
ASA10
ASA23
ASA12
ASA21
ASB20
ASB13
ASB22
ASB11
MUX
MUX
MUX
MUX
BUF
BUF
BUF
BUF
ACI0
ACI1
ACI2
ACI3
ACM0
ACM1
ACM2
ACM3
AC0
AC1
AC2
AC3
ACol1Mux
ACol2Mux
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