FlexRay Communication Controller (FLEXRAY)
22-50
Freescale Semiconductor
PXR40 Microcontroller Reference Manual, Rev. 1
22.5.2.45 Slot Status Counter Condition Register (SSCCR)
This register is used to access and program the four internal non-memory mapped Slot Status Counter
Condition Registers SSCCR0 to SSCCR3. Each of these four internal slot status counter condition
registers defines the mode and the conditions for incrementing the counter in the corresponding
Counter Registers (SSCR0–SSCR3)
. The correspondence is given in
. For a detailed
description of slot status counters, refer to
Section 22.6.18.4, Slot Status Counter Registers
SEL
Selector — This field selects one of the four internal slot status selection registers for access.
00 select SSSR0.
01 select SSSR1.
10 select SSSR2.
11 select SSSR3.
SLOTNUMBER Slot Number — This field specifies the number of the slot whose status will be saved in the corresponding
slot status registers.
Note: If this value is set to 0, the related slot status register provides the status of the symbol window after the
NIT start, and provides the status of the NIT after the cycle start.
Table 22-52. Mapping Between SSSRn and SSRn
Internal Slot
Status Selection
Register
Write the Slot Status of the Slot Selected by SSSRn for each
Even Communication Cycle
Odd Communication Cycle
For Channel B
to
For Channel A
to
For Channel B
to
For Channel A
to
SSSR0
SSR0[15:8]
SSR0[7:0]
SSR1[15:8]
SSR1[7:0]
SSSR1
SSR2[15:8]
SSR2[7:0]
SSR3[15:8]
SSR3[7:0]
SSSR2
SSR4[15:8]
SSR4[7:0]
SSR5[15:8]
SSR5[7:0]
SSSR3
SSR6[15:8]
SSR6[7:0]
SSR7[15:8]
SSR7[7:0]
Base + 0x0066
16-bit write access required
Write: Anytime
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
0
0
SEL
0
CNTCFG
MCY
VFR
SYF
NUF
SUF
STATUSMASK[3:0]
W WMD
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 22-45. Slot Status Counter Condition Register (SSCCR)
Table 22-51. SSSR Field Descriptions
Field
Description
Summary of Contents for PXR4030
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