MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
Freescale Semiconductor
19-33
Table 19-19. EQADC_SSICR Field Descriptions
Bits
Name
Description
0–20
—
Reserved.
21–23
MDT
[0:2]
Minimum delay after transmission. Defines the minimum delay after transmission time
(t
MDT
) expressed in serial clock (FCK) periods. t
MDT
is the minimum time SDS should be
kept negated between two consecutive serial transmissions.
lists the minimum
delay after transfer time according to how MDT is set.
The MDT field must only be written when the serial transmissions from the eQADC SSI are
disabled - See EQADC_MCR[ESSIE] field in Section 19.3.2.1.
24–27
—
Reserved.
28–31
BR
[0:3]
Baud rate. Selects system clock divide factor as shown in
. The baud clock is
calculated by dividing the system clock by the clock divide factor specified with the BR field.
Note: The BR field must only be written when the eQADC SSI is disabled - See
EQADC_MCR[ESSIE] field in Section 19.3.2.1.
Table 19-20. Minimum Delay After Transmission (t
MDT
) Time
MDT
t
MDT
(FCK period)
0b000
1
0b001
2
0b010
3
0b011
4
0b100
5
0b101
6
0b110
7
0b111
8
Table 19-21. System Clock Divide Factor for Baud Clock
BR[0:3]
System Clock Divide Factor
1
0b0000
2
0b0001
3
0b0010
4
0b0011
5
0b0100
6
0b0101
7
0b0110
8
0b0111
9
0b1000
10
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