參數(shù)資料
型號: P87C591
廠商: NXP Semiconductors N.V.
英文描述: Single-chip 8-bit microcontroller with CAN controller
中文描述: 單芯片8 - CAN控制器位微控制器
文件頁數(shù): 56/161頁
文件大小: 588K
代理商: P87C591
1999 Aug 19
56
Philips Semiconductors
Objective Specification
Single-chip 8-bit microcontroller with CAN controller
P8xC591
12.5.18 T
RANSMIT
B
UFFER
The global layout of the Transmit Buffer is shown in Fig.19.
One has to distinguish between the Standard Frame
Format (SFF) and the Extended Frame Format (EFF)
configuration. The transmit buffer allows the definition of
one transmit message with up to eight data bytes.
12.5.18.1 Transmit Buffer Layout
It is subdivided into Descriptor and Data Field where the
first byte of the Descriptor Field is the Frame Information
Byte (Frame Info). It describes the Frame Format (SFF or
EFF), Remote or Data Frame and the Data Length. Two
identifier bytes for SFF and four bytes for EFF messages
follow. The Data Field contains up to eight data bytes. The
Transmit Buffer has a length of 13 bytes and is located in
the CAN address range from 112 to 124.
Fig.19 Transmit Buffer Layout for Standard and Extended Frame Format configurations.
handbook, full pagewidth
MHI023
TX Frame information
Standard Frame Format (SFF)
112
CAN Address
TX Identifier 1
113
TX Identifier 2
114
TX Data byte 1
115
TX Data byte 2
116
TX Data byte 3
117
TX Data byte 4
118
TX Data byte 5
119
TX Data byte 6
120
TX Data byte 7
121
TX Data byte 8
122
unused
123
unused
124
TX Frame information
Extended Frame Format (EFF)
112
CAN Address
TX Identifier 1
113
TX Identifier 2
114
TX Identifier 3
115
TX Identifier 4
116
TX Data byte 1
117
TX Data byte 2
118
TX Data byte 3
119
TX Data byte 4
120
TX Data byte 5
121
TX Data byte 6
122
TX Data byte 7
123
TX Data byte 8
124
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