參數(shù)資料
型號: P87C591VFB
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: 27 PF 5% 50V NPO/COG (0805) CHIP CAP TR
中文描述: 8-BIT, OTPROM, 12 MHz, MICROCONTROLLER, PQFP44
封裝: 10 X 10 X 1.75 MM, PLASTIC, QFP-44
文件頁數(shù): 54/161頁
文件大小: 588K
代理商: P87C591VFB
1999 Aug 19
54
Philips Semiconductors
Objective Specification
Single-chip 8-bit microcontroller with CAN controller
P8xC591
12.5.17.5 Dual Filter Configuration
In this filter configuration two short filters could be defined.
A received message is compared with both filters to
decide, whether this message should be copied into the
Receive Buffer or not. If at least one of the filters signals an
acceptance, the received message becomes valid. The bit
correspondences between the filter bytes and the
message bytes depends on the currently received Frame
Format.
Dual Filter Standard Frame:
If the Standard Frame Format is selected, the two defined
filters are different. The first filter compares the complete
Standard Identifier including the RTR bit
and
the first Data
Byte of the message. The second filter just compares the
complete Standard Identifier including the RTR bit.
Fig.17 Dual Filter Configuration, receiving Standard Frame Messages.
handbook, full pagewidth
Addr.: 16
7
6
ACR0
2
5
4
3
1
0
MSB
LSB
ACR1
2
3
1
0
LSB
ACR3
2
3
1
0
LSB
Addr.: 17
7
6
5
4
MSB
I
I
I
I
I
I
I
I
I
I
I
R
D
D
D
D
D
D
D
D
Addr.: 20
7
6
AMR0
2
5
4
3
1
0
MSB
LSB
AMR1
2
3
1
0
LSB
AMR3
2
3
1
0
LSB
Addr.: 21
7
6
5
4
MSB
[6]
[7]
1
1
[0]
[0]
1
=
Acceptance Code Bit
Acceptance Mask Bit
Filter 1
Filter 2
Filter 1
Filter 2
Message
Addr.: 22
7
6
MSB
AMR2
2
5
4
3
1
0
LSB
Addr.: 23
7
6
MSB
AMR3
5
4
Addr.: 18
7
6
MSB
ACR2
2
5
4
3
1
0
LSB
Addr.: 19
7
6
MSB
ACR3
5
4
. . .
. . .
. . .
.
[6]
[7]
0
1
not accepted
accepted
=
Message Bit
Acceptance Code Bit
Acceptance Mask Bit
. . .
. . .
. . .
.
&
&
MHI017
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