iC-NQC
13-bit Sin/D CONVERTER WITH SIGNAL CALIBRATION
Rev D1, Page 22/29
I/O INTERFACE: SSI Protocol
M2S
Code
0x00
0x01
0x02
0x03
Adr 0x00, Bit 6:5
iC-NQC can transmit position data in SSI protocol
mode; the parameters described in the following give
the necessary settings and options.
Period counter output length
-
P(7:0)
P(11:0)
P(23:0)
Table 45: Period counter for SSI data output
CRC6
Adr 0x03, Bit 7
Adr 0x03, Bit 6
Additional bits
E1, E0
NZB
Code
0 0
Ring operation
Figure 17: Example line signal (SSI)
no
0 1
none
no
SELSSI
Adr 0x02, Bit 6
Protocol
BiSS C
1 0
nE, nW, zero bit
none
yes
yes
Code
1 1
0
1
SSI
Table 46: Options for SSI data output
Table 43: Protocol version
GRAY
Code
0
Adr 0x05, Bit 7
SSI data format
binary coded
gray coded
TIMO
Code
0
Adr 0x06, Bit 5
Timeout ttos
fclk(MA)min*
1
Long: ca. 20 µs
not permitted
Adr 0x07, Bit 3
see TOS
50 kHz
Notes
Data output starts with MSB for binary or Gray
coded data.
1
TOA
0
Table 47: SSI data format
1
not permitted
32
Notes
A ref. clock count is equal to
(see El. Char.
fosc
A01). The permissible max. clock frequency is
specified by item E06.
*) A low clock frequency can reduce the permissible
maximum input frequency since conversion is
paused for one MA cycle from Latch onwards.
Table 44: Timeout configuration for SSI
ICHAUS [ IC-HAUS GMBH ]
