Siemens AC75 - 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

I²C bus (default)

SPI device

Port D11 - D8 0 Internal port

Data transfer rate D7 - D4 0

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)