iC-MQ PROGRAMMABLE 9-BIT
Sin/Cos INTERPOLATION IC WITH RS422 DRIVER
Rev D4, Page 20/39
SIGNAL PATH MULTIPLEXING
MUX_OUT
MUX_IN
Calibration
X1
X2
X3
X4
X5
X6
PCH0i
PCH0o
NCH0o
INVZ
PZO
NZO
+
+
0
1
ZIN
NCH0i
-
-
VREFin0
MUXIN(0)
PCH2i
PCH2o
NCH2o
0
1
PC_out
NC_out
+
NCH2i
MUXIN(1)
-
0
1
PCH1i
PCH1o
NCH1o
PS_out
NS_out
+
MUXIN(1)
NCH1i
-
0
1
VDC1
VDC2
VDC1
VDC2
INMODE
VREFin12
Figure 3: Principle Of Multiplexer Function
MUXIN
Code
00
Adr 0x03, bit 1:0
The signals for index channel CH0 are connected up to
pins X1 and X2. Pins X3 to X6 are allocated to internal
channels CH1 and CH2 via MUXIN. INMODE can be
activated for referenced input signals; this then selects
X2 as the reference signal input. For output purposes
INVZ allows the index signal phase to be inverted for
channel CH0.
PCH1i
NCH1i
PCH2i
X3
NCH2i
X4
X2
X2
01
not permitted
not permitted
X4
10
11
X2
X5
X2
Table 21: Input Multiplexer for INMODE = 1
MUXIN
Code
00
Adr 0x03, bit 1:0
PCH1i
NCH1i
PCH2i
X3
NCH2i
X5
X4
X6
INVZ
Code
0
Adr 0x03, bit 3
01
not permitted
PZO
NZO
10
X4
X4
X5
X3
X3
X5
X6
X6
PCH0o
NCH0o
NCH0o
PCH0o
11
1
Table 20: Input Multiplexer for INMODE = 0
Table 22: Index Signal Inversion
ICHAUS [ IC-HAUS GMBH ]
