FlexRay Communication Controller (FlexRAY)
PXN20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor
26-39
26.5.2.26 Slot Counter Channel B Register (SLTCTBR)
This register provides the number of the current slot in the current communication cycle for channel B.
26.5.2.27 Rate Correction Value Register (RTCORVR)
This register provides the sign extended rate correction value in microticks as it was calculated by the clock
synchronization algorithm. The controller updates this register during the NIT of each odd numbered
communication cycle.
Base + 0x0036
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
0
0
0
0
0
SLOTCNTB
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 26-26. Slot Counter Channel B Register (SLTCTBR)
Table 26-32. SLTCTBR Field Descriptions
Field
Description
SLOTCNTA
Slot Counter Value for Channel B — protocol related variable:
vSlotCounter
for channel B
This field provides the number of the current slot in the current communication cycle.
Base + 0x0038
Additional Reset: RUN Command
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
RATECORR
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 26-27. Rate Correction Value Register (RTCORVR)
Table 26-33. RTCORVR Field Descriptions
Field
Description
RATECORR Rate Correction Value — protocol related variable:
vRateCorrection
(before value limitation and external rate
correction).
This field provides the sign extended rate correction value in microticks as it was calculated by the clock
synchronization algorithm. The value is represented in 2’s complement format. This value does not include the
value limitation and the application of the external rate correction. If the magnitude of the internally calculated
rate correction value exceeds the limit given by rate_correction_out in the
Protocol Configuration Register 13
, the clock correction reached limit interrupt flag CCL_IF is set in the
Protocol Interrupt Flag Register 0
.
Note: If the controller was not able to calculate a new rate correction term due to a lack of synchronization
frames, the RATECORR value is not updated.
Summary of Contents for PXN2020
Page 1: ...PXN20 Microcontroller Reference Manual Devices Supported PXN2020 PXN2120 PXN20RM Rev 1 06 2011...
Page 42: ...PXN20 Microcontroller Reference Manual Rev 1 lxiv Freescale Semiconductor...
Page 64: ...Introduction PXN20 Microcontroller Reference Manual Rev 1 1 22 Freescale Semiconductor...
Page 112: ...Signal Description PXN20 Microcontroller Reference Manual Rev 1 3 44 Freescale Semiconductor...
Page 118: ...Resets PXN20 Microcontroller Reference Manual Rev 1 4 6 Freescale Semiconductor...
Page 372: ...e200z6 Core Z6 PXN20 Microcontroller Reference Manual Rev 1 13 8 Freescale Semiconductor...
Page 412: ...e200z0 Core Z0 PXN20 Microcontroller Reference Manual Rev 1 14 14 Freescale Semiconductor...
Page 821: ...Media Local Bus MLB PXN20 Microcontroller Reference Manual Rev 1 Freescale Semiconductor 27 49...
Page 822: ...Media Local Bus MLB PXN20 Microcontroller Reference Manual Rev 1 27 50 Freescale Semiconductor...
Page 1376: ...Memory Map PXN20 Microcontroller Reference Manual Rev 1 A 118 Freescale Semiconductor...