Siemens TC63 - Manual (Page 451)

TC63 AT Command Set
19.7 AT^SSPI
s
TC63_ATC_V00.490 Page 451 of 501 5/24/05
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I²C: This parameter specifies a delay after a write frame. See Section 19.7.1 , Specifying Delay Time for I²C for
further details.
[0]
(&F) ...FFFF (Unsigned 16 bit value)
I²C: This parameter specifies the delay after a read frame. See Section 19.7.1 , Specifying Delay Time for I²C for
further details.
[0]
(&F) ...FFFF (Unsigned 16 bit value)
19.7.1 Specifying Delay Time for I²C
The following figures are provided to assist you in specifying appropriate values for the parameters
and . All delays are relative to the data transfer rate. To calculate the delay use the formula and the
values given below.
Table 19.2: Values for calculating the delay
Subparameter Bit Hexadecimal Selected function
Interface type D15 - D12 0 I²C bus (default)
Port D11 - D8 0 Internal port
Data transfer rate D7 - D4 0
1
I²C at 100 kbps
I²C at 400 kbps (default)
Protocol D3 - D0 0 ASCII (hex coding)
(num)
(num)
Figure 19.1: Formula for calculating the delay
Parameter Values
Delay value Value set with parameter or
Master clock 13 MHz
Default data transfer rate 400 bps
User data transfer rate Value selected with subparameter data transfer rate within
tion>
, for example 100 kbps or 400 kbps
Delay_min for Write 7.4 µs at 100 kbps
2.0 µs at 400 kbps
Delay_min for Read 9.9 µs at 100 kbps
2.6 µs at 400 kbps