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Chapter 22 Inter-Integrated Circuit Bus Controller Module (I
2
C)
MPC5606BK Microcontroller Reference Manual, Rev. 2
402
Freescale Semiconductor
Figure 22-5. SCL divider and SDA hold
The equation used to generate the divider values from the IBFD bits is:
SCL Divider = MUL × {2 × (s [(SCL_Tap –1) × tap2tap] + 2)}
Eqn. 22-1
The SDA hold delay is equal to the CPU clock period multiplied by the SDA Hold value shown in
. The equation used to generate the SDA Hold value from the IBFD bits is:
SDA Hold = MUL × {s [(SDA_Tap – 1) × tap2tap] + 3}
Eqn. 22-2
The equation for SCL Hold values to generate the start and stop conditions from the IBFD bits is:
SCL Hold(start) = MUL × [scl (SCL_Tap – 1) × tap2tap]
Eqn. 22-3
SCL Hold(stop) = MUL × [sc (SCL_Tap – 1) × tap2tap]
Eqn. 22-4
SDA
SCL
START condition
STOP condition
SCL Hold(start)
SCL Hold(stop)
Summary of Contents for MPC5605BK
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Page 20: ...MPC5606BK Microcontroller Reference Manual Rev 2 20 Freescale Semiconductor...
Page 103: ...MPC5606BK Microcontroller Reference Manual Rev 2 Freescale Semiconductor 103 Clocks and power...
Page 645: ...MPC5606BK Microcontroller Reference Manual Rev 2 Freescale Semiconductor 643 Timers...
Page 715: ...MPC5606BK Microcontroller Reference Manual Rev 2 Freescale Semiconductor 713 ADC system...
Page 787: ...MPC5606BK Microcontroller Reference Manual Rev 2 Freescale Semiconductor 787 Memory...
Page 893: ...MPC5606BK Microcontroller Reference Manual Rev 2 Freescale Semiconductor 893 Integrity...
Page 943: ...MPC5606BK Microcontroller Reference Manual Rev 2 Freescale Semiconductor 943 Debug...