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参数资料
型号： DSPIC30F5016-30I/PT
厂商： Microchip Technology
文件页数： 32/129页
文件大小： 0K
描述： IC DSPIC MCU/DSP 66K 80TQFP
产品培训模块： dsPIC30F Quadrature Encoder Interface
Serial Communications using dsPIC30F CAN
Serial Communications using dsPIC30F I2C
Serial Communications using dsPIC30F SPI
Serial Communications using dsPIC30F UART
dsPIC30F 12 bit ADC - Part 2
dsPIC30F Addressing Modes - Part 1
dsPIC30F Architecture - Part 1
dsPIC30F DSP Engine & ALU
Asynchronous Stimulus
dsPIC30F Addressing Modes - Part 2
dsPIC30F Architecture - Part 2
dsPIC30F 12-bit ADC Part 1
标准包装： 119
系列： dsPIC™ 30F
核心处理器： dsPIC
芯体尺寸： 16-位
速度： 30 MIP
连通性： CAN，I²C，SPI，UART/USART
外围设备： 高级欠压探测/复位，电机控制 PWM，QEI，POR，PWM，WDT
输入/输出数： 68
程序存储器容量： 66KB（22K x 24）
程序存储器类型： 闪存
EEPROM 大小： 1K x 8
RAM 容量： 2K x 8
电压 - 电源 (Vcc/Vdd)： 2.5 V ~ 5.5 V
数据转换器： A/D 16x10b
振荡器型： 内部
工作温度： -40°C ~ 85°C
封装/外壳： 80-TQFP
包装： 托盘
产品目录页面： 651 (CN2011-ZH PDF)
配用： AC164320-ND - MODULE SKT MPLAB PM3 80TQFP
AC30F007-ND - MODULE SKT FOR DSPIC30F 80TQFP
DV164005-ND - KIT ICD2 SIMPLE SUIT W/USB CABLE
其它名称： DSPIC30F501630IPT
2008 Microchip Technology Inc.
DS70149D-page 127
dsPIC30F5015/5016
19.3
Modes of Operation
The CAN module can operate in one of several operation
modes selected by the user. These modes include:
Initialization Mode
Disable Mode
Normal Operation Mode
Listen-Only Mode
Loopback Mode
Error Recognition Mode
Modes are requested by setting the REQOP<2:0>
bits (CiCTRL<10:8>).
Entry
into
a
mode
is
acknowledged by monitoring the OPMODE<2:0> bits
(CiCTRL<7:5>). The module will not change the mode
and the OPMODE bits until a change in mode is
acceptable, generally during bus idle time which is
defined as at least 11 consecutive recessive bits.
19.3.1
INITIALIZATION MODE
In the Initialization mode, the module will not transmit or
receive. The error counters are cleared and the inter-
rupt flags remain unchanged. The programmer will
have access to Configuration registers that are access
restricted in other modes. The module will protect the
user from accidentally violating the CAN protocol
through programming errors. All registers which control
the configuration of the module can not be modified
while the module is on-line. The CAN module will not
be allowed to enter the Configuration mode while a
transmission is taking place. The Configuration mode
serves as a lock to protect the following registers:
All Module Control Registers
Baud Rate and Interrupt Configuration Registers
Bus Timing Registers
Identifier Acceptance Filter Registers
Identifier Acceptance Mask Registers
19.3.2
DISABLE MODE
In Disable mode, the module will not transmit or
receive. The module has the ability to set the WAKIF bit
due to bus activity, however any pending interrupts will
remain and the error counters will retain their value.
If the REQOP<2:0> bits (CiCTRL<10:8>) = 001, the
module will enter the Module Disable mode. If the mod-
ule is active, the module will wait for 11 recessive bits
on the CAN bus, detect that condition as an idle bus,
then accept the module disable command. When the
OPMODE<2:0> bits (CiCTRL<7:5>) = 001, that indi-
cates whether the module successfully went into Mod-
ule Disable mode. The I/O pins will revert to normal I/O
function when the module is in the Module Disable
mode.
The module can be programmed to apply a low-pass
filter function to the CiRX input line while the module or
the CPU is in Sleep mode. The WAKFIL bit
(CiCFG2<14>) enables or disables the filter.
19.3.3
NORMAL OPERATION MODE
Normal
Operating
mode
is
selected
when
REQOP<2:0> = 000. In this mode, the module is
activated, the I/O pins will assume the CAN bus
functions. The module will transmit and receive CAN
bus messages via the CxTX and CxRX pins.
19.3.4
LISTEN-ONLY MODE
If the Listen-Only mode is activated, the module on the
CAN bus is passive. The transmitter buffers revert to
the Port I/O function. The receive pins remain inputs.
For the receiver, no error flags or Acknowledge signals
are sent. The error counters are deactivated in this
state. The Listen-Only mode can be used for detecting
the baud rate on the CAN bus. To use this, it is neces-
sary that there are at least two further nodes that
communicate with each other.
19.3.5
ERROR RECOGNITION MODE
The module can be set to ignore all errors and receive
any message. The Error Recognition mode is activated
by setting the RXM<1:0> bits (CiRXnCON<6:5>) regis-
ters to ‘11’. In this mode, the data which is in the
message assembly buffer until the time an error
occurred, is copied in the receive buffer and can be
read via the CPU interface.
19.3.6
LOOPBACK MODE
If the Loopback mode is activated, the module will con-
nect the internal transmit signal to the internal receive
signal at the module boundary. The transmit and
receive pins revert to their port I/O function.
Note:
Typically, if the CAN module is allowed to
transmit in a particular mode of operation
and a transmission is requested immedi-
ately after the CAN module has been
placed in that mode of operation, the mod-
ule waits for 11 consecutive recessive bits
on the bus before starting transmission. If
the user switches to Disable mode within
this 11-bit period, then this transmission is
aborted and the corresponding TXABT bit
is set and TXREQ bit is cleared.
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