mfr4200 Freescale Semiconductor, Inc, mfr4200 Datasheet - Page 158

• Manufacturer Part Number: mfr4200
• Description: Flexray Communication Controllers
• Manufacturer: Freescale Semiconductor, Inc

MFR4200 FlexRay Communication Controller
3.4.1.12 Reserved — Reserved
Those bits are reserved for future use. Reserved bit are accessible by host read operations only. They have
an undefined state.
3.4.2
The cycle counter filter register CCFnR[0:58] is shown in the following figures.
Where:
Message buffer filter registers sets are used only for transmit and receive message buffers, not for the FIFO.
The FIFO has its own filter register set (see
3.4.2.1
The operation of the filtering mechanism depends on the configuration of the buffer.
Receive message buffer:
The received frame is stored only if all the following conditions are met.
158
15
Reserved
15
Reserved
15
Reserved
RO_NO/WR_CS
NU
NU
NU
Figure 3-129. CCFnR, CC Part Buffer of a Double Transmit Message Buffer Filter Registers
RO
14
14
14
NU
Message Buffer Filter Registers
Cycle Counter Filter Register (CCFnR)
13
13
13
The host can write the VALID bit only during the configuration state, for
receive message buffers. During all other modes of the CC this bit is
read-only.
Figure 3-128. CCFnR, Transmit and Receive Message Buffer Filter Registers
Field with host read-only access during normal operation (host write access in configuration state only)
Field with host read-only access
Reserved or not used
12
12
12
Cycle Count Mask
Cycle Count Mask
Cycle Count Mask
RO_NO/WR_CS
11
11
11
Figure 3-130. CCFnR, FIFO Buffer Filter Registers
RO
NU
10
10
10
MFR4200 Data Sheet, Rev. 0
9
9
9
Section 3.2.3.8, “Filtering Related
8
8
8
NOTE
Reserved
Reserved
Reserved
7
7
7
NU
NU
NU
6
6
6
5
5
5
4
4
4
Cycle Count Value
Cycle Count Value
Cycle Count Value
Registers”).
RO_NO/WR_CS
3
3
3
RO
NU
Freescale Semiconductor
2
2
2
1
1
1
0
0
0