IC-MR Datasheet, PDF (36/44 Pages) IC-Haus GmbH – 13-BIT S&H SIN/COS INTERPOLATOR WITH CONTROLLER INTERFACES

iC-MR 13-BIT S&H SIN/COS
preliminary
INTERPOLATOR WITH CONTROLLER INTERFACES
SERIAL I/O INTERFACE: SSI
Rev A1, Page 36/44
Configuration
iC-MR can transmit position data in SSI protocol, for
which purpose the following parameters give the nec-
essary settings and options. In addition, register ac-
cesses in write form are possible in SSI mode. As in
BiSS mode, the timeout is formed adaptively and thus
does not require configuration.
Figure 24: Example of line signals (SSI)
NESSI
Code
Addr 0x19, bit 4
Protocol
Information
0
SSI
1
BiSS C
www.biss-interface.com
Table 62: BiSS/SSI protocol selection
Configuration examples
POS: Singleturn data
Bits
Type
Label
13
DATA
Singleturn value ST(23:11)
Config.
NESSI = 0, ENLC = 0, TMPSCD = 0, ENXCRC = 0,
SSIERR = 0, SSIMODE = 00,
STRESO = 0x0D, MTRESO = 0x7
Register NESSI must be zeroed so that data can be
transmitted in SSI protocol. SSI ring mode can be acti-
vated by SSIRING. SSIMODE(1:0) sets the data length
of the serial interface in SSI protocol. Possible values
are a 13-bit SSI, a 25-bit SSI, or an extended mode,
the data length of which can be configured as in BiSS
C protocol. In 13-bit or 25-bit SSI mode the error bit
can be attached to the data by SSIERR.
Table 64: Format example 1 for 13-bit SSI
POS: Single- and multiturn data
Bits
Type
Label
12
DATA
Multiturn value MT(11:0)
13
DATA
Singleturn value ST(23:11)
1
ERROR Error nE
Config.
NESSI = 0, ENLC = 0, TMPSCD = 0, ENXCRC = 0,
SSIERR = 1, SSIMODE = 01,
STRESO = 0x0D, MTRESO = 0x3
SSIRING
Code
0
1
SSIERR
0
1
SSIMODE
00
01
10
Addr. 0x18; bit 1
Function
SSI ring mode deactivated
SSI ring mode activated
Addr. 0x18; bit 0
Standard SSI output without error bit
Standard SSI output with error bit
Addr. 0x19; bit 1...0
13-bit SSI protocol
25-bit SSI protocol
Extended SSI protocol (8-85 bit)
Table 63: SSI Configuration
R/W
Table 65: Format example 2 for 25-bit SSI
POS: Single- and multiturn data with life counter
Bits
Type
Label
R/W
24
DATA
Multiturn value MT(23:0)
26
DATA
Singleturn value ST(25:0)
2
R/W
6
ERROR
DATA
Error nE and warning nW
Life counter LC
16
CRC
Polynomial 0x190D9
TMP: Temperature data
16
DATA
Temperature value TEMP(15:0)
5
CRC
Polynomial 0x25
Config.
NESSI = 0, ENLC = 1, TMPSCD = 1, ENXCRC = 1,
SSIERR = 0, SSIMODE = 10,
STRESO = 0x00, MTRESO = 0x0
Table 66: Format example 3 for extended SSI