iC-MQ
PROGRAMMABLE 9-BIT
Sin/Cos INTERPOLATION IC WITH RS422 DRIVER
Rev D4, Page 20/39
SIGNAL PATH MULTIPLEXING
MUX_IN
X1
Calibration
MUX_OUT
X2
VREFin0
MUXIN(0)
0 1
MUXIN(1)
PCH0i
NCH0i
+
PCH0o
0
NCH0o
INVZ
1
PZO
+
X3
-
+
NZO
-
PC_out
NC_out
ZIN
X4
PCH2i
NCH2i
PCH2o
NCH2o
X5
0
1
PCH1i
-
+
PCH1o
NCH1o
VDC1
VDC2
PS_out
NS_out
VDC1
VDC2
X6
MUXIN(1)
0
1
INMODE
NCH1i
-
VREFin12
Figure 3: Principle Of Multiplexer Function
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.
MUXIN
Code
00
01
10
11
Adr 0x03, bit 1:0
PCH1i
NCH1i
X4
not permitted
X4
X4
X5
X3
X3
X5
X6
X6
X6
MUXIN
Code
00
01
10
11
Adr 0x03, bit 1:0
PCH1i
NCH1i
X4
not permitted
not permitted
X4
X2
X5
X2
X2
PCH2i
X3
NCH2i
X2
Table 21: Input Multiplexer for INMODE = 1
PCH2i
X3
NCH2i
X5
INVZ
Code
0
1
Adr 0x03, bit 3
PZO
PCH0o
NCH0o
NZO
NCH0o
PCH0o
Table 20: Input Multiplexer for INMODE = 0
Table 22: Index Signal Inversion
ICHAUS [ IC-HAUS GMBH ]
