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| 型号： | MCZ33781EK |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 9/44页 |
| 文件大小： | 0K |
| 描述： | IC MASTER DSI 2.02 DIFF 32-SOIC |
| 标准包装： | 42 |
| 应用： | 车载系统 |
| 接口： | SPI |
| 电源电压： | 4.75 V ~ 5.25 V |
| 封装/外壳： | 32-BSOP（0.295"，7.50mm 宽）裸露焊盘 |
| 供应商设备封装： | 32-SOICW 裸露焊盘 |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
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Analog Integrated Circuit Device Data
Freescale Semiconductor
17
33781
FUNCTIONAL DESCRIPTIONS
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
Figure 10. Block Illustration
The 33781 is controlled by an MCU through the SPI0
interface. It handles the digital and physical layer portions of
a DBUS master node. Four separate DBUS channels are
included. The physical layer uses a two-wire bus with analog
wave-shaped voltage and current signals. Refer to Figure 1.
Major subsystems include the following:
SPI0 interface and registers to a main MCU
SPI1 interface and registers to a second MCU
Four channels of DSI 2.02 protocol state logic
CRC block for each channel
Control and status registers
Four addressable register sets per channel for queuing up
to four commands and data per bus. The addressable
buffer acts as a circular buffer for command writes and
data reads.
Pseudo Bus Switch from D0H/L to DPH/L
SPI0 AND REGISTERS
This block contains the SPI0 interface logic and the control
and response registers that are written to and read from the
SPI interface.
The IC is an SPI slave-type device, so MOSI0 (Master-
Out-Slave-In) is an input and MISO0 (Master-In-Slave-Out) is
an output. CS0 and SCLK0 are also inputs.
The SPI0 port can handle 2-byte and 4-byte transfers. It
addresses 87 registers. The organization of the registers is
described in the section entitled SPI0 Register and Bit
SPI1 AND REGISTERS
The 33781 has a second SPI port (called SPI1) that allows
valid response data from Bus Channel 2 and 3, along with the
slave address, to be read independently by a second MCU.
This block contains the SPI1 interface logic and the response
registers that are read from the SPI1 interface.
The IC is an SPI slave-type device, so MISO1 (Master-In-
Slave-Out) is an output, and CS1 and SCLK1 are inputs. SPI1
does not use the MOSI (Master-Out-Slave-In) pin or function
as it does not receive commands.
The SPI1 port handles only 16-bit transfers. It addresses
eight registers which are read only.
PROTOCOL ENGINE
This block converts the data to be transmitted from the
registers into the DBUS sequences, and converts DBUS
response sequences to data in the registers.
The DBUS transmit protocol uses a return to 1 type data
with a duty cycle determined by the logic state. The protocol
includes Cyclical Redundancy Check (CRC) generation and
validation.
MC33781 - Functional Block Diagram
Supply Voltage
Power Stage
Supply Voltage
2.5V Regulator
Power Stage
CRC Generation and Checking
Clock Generation and Frequency Spreading
Logic and Control
Over-temperature Sensing
SPI0 Registers and State Machine
Over-current Sensing
DBUS Drivers
and Receivers
Pseudo-bus
Logic and Control
VSUP Voltage Monitor
HCAP Charging Circuitry
SPI1 Registers and State Machine
Switches
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCZ33781EKR2 | 功能描述:输入/输出控制器接口集成电路 DBUS2 MASTER STND RoHS:否 制造商:Silicon Labs 产品: 输入/输出端数量: 工作电源电压: 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:QFN-64 封装:Tray |
| MCZ33784EF | 功能描述:加速计 - 板上安装 DBUS2 SENSOR INTERFACE RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C |
| MCZ33784EF/R2- | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:DSI 2.02 Sensor Interface |
| MCZ33784EFR2 | 功能描述:加速计 - 板上安装 DBUS2 SENSOR INTERFACE RoHS:否 制造商:Murata 传感轴:Double 加速:12 g 灵敏度: 封装 / 箱体: 输出类型:Analog 数字输出 - 位数:11 bit 电源电压-最大:5.25 V 电源电压-最小:4.75 V 电源电流:4 mA 最大工作温度:+ 125 C 最小工作温度:- 40 C |
| MCZ33789AE | 功能描述:网络控制器与处理器 IC Airbag ASSP RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
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