Siemens AC75 - Manual (Page 497)

AC75 AT Command Set
19.8 AT^SSPI
s
AC75_ATC_V01.002 Page 497 of 569 10/30/06
Confidential / Released
Parameter Description
Parameter returned by the
AT^SSPI
? read command.
Indicates whether or not the I²C or SPI channel is used. When the channel is open and the ME is in data mode,
the read command can only be used if one of the remaining interfaces is available. For example, when the chan-
nel was opened on ASC0, you can use ASC1 or the MUX channels to check the status.
[0]
(&F) Not connected (channel closed). All following parameters are the factory set-
tings
AT^SSPI
=0,0010,0000,0000,0000,0000.
1 Connected (channel open, ME in data mode). All following parameters are the
values currently used, for example
AT^SSPI
=1,0010,FFFF,FFFF,0000,0000.
Parameter
<basicConfiguration>
is a 16 bit word which contains four subparameters to control the follow-
ing functions:
I²C: This parameter specifies a delay after each written byte. See Section 19.8.1 , Specifying Delay Time for I²C
for further details.
SPI: 0000 only.
[0]
(&F) ...FFFF Unsigned 16 bit value
I²C: This parameter specifies the delay after a each read byte. See Section 19.8.1 , Specifying Delay Time for
I²C for further details.
SPI: 0000 only.
[0]
(&F) ...FFFF Unsigned 16 bit value
For SPI only:
0
Length of SPI word = 8 bits
For SPI only: Parameter
<extendedSpiConfiguration>
is a 16 bit word which contains four subparameters
to control the following functions:
<connectionState>
(num)
<basicConfiguration>
(num)
Subparameter Bit Hexadecimal Selected function
Interface type D15 - D12 0
1
I²C bus (default)
SPI device
Port D11 - D8 0 Internal port
Data transfer rate D7 - D4 0
1
0
1
2
3
4
5
I²C at 100 kbps
I²C at 400 kbps (default)
SPI at 100 kbps
SPI at 250 kbps
SPI at 500 kbps
SPI at 1.083 Mbps
SPI at 3.25 Mbps
SPI at 6.5 Mbps
Protocol D3 - D0 0 ASCII (hex coding)
<delayOne>
(num)
<delayTwo>
(num)
<wordLength>
(num)
<extendedSpiConfiguration>
(num)