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參數(shù)資料
| 型號(hào)： | MC33389 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國(guó))有限公司 |
| 英文描述： | System Basis Chip with Low Speed Fault Tolerant CAN(帶低速容錯(cuò)CAN接口的系統(tǒng)基片) |
| 中文描述： | 系統(tǒng)基礎(chǔ)芯片與低速容錯(cuò)CAN（帶低速容錯(cuò)的CAN接口的系統(tǒng)基片） |
| 文件頁數(shù)： | 20/35頁 |
| 文件大?。?/td> | 591K |
| 代理商： | MC33389 |
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MC33389
20
MC33389
Freescale Semiconductor, Inc.
General Description
The SPI system is flexible enough to communicate directly
with numerous standard peripherals and MCUs available from
Motorola and other semiconductor manufacturers. SPI
reduces the number of pins necessary for input/output on the
MC33389. The SPI system of communication consists of the
MCU transmitting, and in return, receiving one databit of
information per clock cycle. Databits of information are
simultaneously transmitted by one pin, Microcontroller Out
Serial In (MOSI), and received by another pin, Microcontroller
In Serial Out (MISO), of the MCU. Figure 21 below shows the
basic SPI configuration between an MCU and one MC33389.
The SPI serial operation is guaranteed to 2.0 MHz.
Figure 21. SPI Interface With Microcontroller
Control and Status Reporting of the MC33389
The MCU is responsible for the control data transfer to the
MC33389, while the MC33389 reports its status to the MCU.
Summarized below are the major data for control and status
reporting.
- SPI initialization during start up
- MC33389 control during operation
- Watchdog triggering
- Reading status registers of the MC33389
Control Data
The control data are transferred from the MCU to the
MC33389. A control word includes an address of a certain
control register and the appropriate data. Basically the
following data will be transferred (See the SPI Register
Description section on page 21).
- MC33389 mode control
- Supply control
- Forced wake-up timing
- Cyclic sense control
- Watchdog control
- Transceiver control
Status Data
The status data are transmitted from the MC33389 to the
MCU. After receiving a valid register address from the MCU,
the MC33389 returns the appropriate status. Some of the
major status data are listed below:
- Current operation mode status
- Wake-up sources
- Reset status
- Error status
- Overtemperature status
- Transceiver status
MOSI
CSB
SCLK
MISO
MOSI
MISO
MC68HCXX
MC33389
Data Transfer
The data to and from the MC33389 are transferred in form
of two bytes.The structure of the transferred information is the
same for control the MC33389 and status reporting. The
address field A5 to A0 (Bit15 to Bit10) contains the address of
a control or status register in the MC33389. RW (Bit9 and Bit8)
contains the read/write flag for the data field. The parity field is
located at P3 to P0 (Bit7 to Bit4). The data field D3 to D0 (Bit3
to Bit0) is attached to the 2 byte data word, see figure below.
Figure 22.
The SBC is accessible via the SPI interface in
NormalRequest mode, Normal mode and Standby mode. In
all other modes (Sleep mode, Emergency mode), the voltage
supply for the microcontroller in permanently switched off and
the SBC input logic for MISO, MOSI, CSB and SCLK isn’t
working (except SPI wake-up function in Sleep mode).
Writing Data
To write data in a SPI register, two one-byte transmissions
have to performed. The first byte contains the address of the
register (MSB first) and the read/write bits which have to be
set to 1. The second byte contains the new data addressed by
the previous byte (MSB first) and the parity information. The
calculation of the parity field P3-P0 has to follow the equations
below:
P3
D3
D0
⊕
=
P2
D3
D2
⊕
=
P1
D2
D1
⊕
=
P0
D1
D0
⊕
=
(EX-OR)
Note, that during the transmission of the two bytes the
CSB pin remains 0. See figure23 hereafter.
Figure 23.
The SBC sends back the old address, R/W, parity, and
data information from a previous transmission. This data
contains no useful information (e.g. status).It shouldn’t be used.
In case of a wrong address field or parity mismatch, an
interrupt will be issued and the SBC retains the old state.
Reading Data
To read data from a dedicated register two one-byte
transmissions have to be performed. The first byte contains
the address of the register (MSB first) and the read/write flag
setting to 0. The second byte needn’t to contain valid data,
A5 A4 A3 A2 A1 A0
D3 D2 D1 D0
P3 P2 P1 P0
RW
RW
Bit14 Bit13 Bit12 Bit11 Bit10 Bit9
Bit8
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Bit15
address + R/W
data
parity
MOSI
MISO
A5 A4 A3 A2 A1 A0
D3 D2 D1 D0
P3 P2 P1 P0
RW
RW
A3 A2 A1 A0
1
1
A5 A4
SBC SPI Data Register
Bit14 Bit13 Bit12 Bit11 Bit10 Bit9
Bit8
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Bit15
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
HC08/12 SPI Data Register
old address + R/W
old data
old parity
new address + R/W (1st byte)
new data + parity (2nd byte)
D3 D2 D1 D0
P3 P2 P1 P0
F
For More Information On This Product,
Go to: www.freescale.com
n
.
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| MC33389CDH | 功能描述:IC SYSTEM BASIS W/CAN 20-HSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:4,900 系列:- 控制器類型:USB 2.0 控制器 接口:串行 電源電壓:3 V ~ 3.6 V 電流 - 電源:135mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:36-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:36-QFN（6x6） 包裝:* 其它名稱:Q6396337A |
| MC33389CDHR2 | 功能描述:IC SYSTEM BASE W/CAN 20-HSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 控制器 系列:- 標(biāo)準(zhǔn)包裝:4,900 系列:- 控制器類型:USB 2.0 控制器 接口:串行 電源電壓:3 V ~ 3.6 V 電流 - 電源:135mA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:36-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:36-QFN（6x6） 包裝:* 其它名稱:Q6396337A |
| MC33389CDW | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC SYSTEM BASIC CHIPS RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| MC33389CDWR2 | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC SYSTEM BASIC CHIPS RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| MC33389DDW | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC SBC SOW28 RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
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