参数资料
型号: PIC32MX675F512L-80I/BG
厂商: Microchip Technology
文件页数: 9/64页
文件大小: 0K
描述: IC MCU 32BIT 512KB FLASH 121XBGA
特色产品: 32-Bit PIC? Microcontroller
PIC32 32-Bit MCU Families
标准包装: 184
系列: PIC® 32MX
核心处理器: MIPS32? M4K?
芯体尺寸: 32-位
速度: 80MHz
连通性: 以太网,I²C,SPI,UART/USART,USB OTG
外围设备: 欠压检测/复位,DMA,POR,PWM,WDT
程序存储器容量: 512KB(512K x 8)
程序存储器类型: 闪存
RAM 容量: 64K x 8
电压 - 电源 (Vcc/Vdd): 2.3 V ~ 3.6 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: 121-TFBGA
包装: 托盘
产品目录页面: 650 (CN2011-ZH PDF)
2007-2012 Microchip Technology Inc.
DS61145K-page 17
PIC32MX
6.4
XferFastData
Pseudo Operation
Format:
oData = XferFastData (iData)
Purpose:
To quickly send 32 bits of data in/out of the device.
Description (in sequence):
1.
The TMS Header is clocked into the device to
select the Shift DR state.
2.
The input value of the PrAcc bit, which is ‘0’, is
clocked in.
3.
TMS Footer = 10 is clocked in to return the TAP
controller to the Run/Test Idle state.
Restrictions:
The SendCommand (ETAP_FASTDATA) must be sent
first to select the Fastdata register, as shown in
Example 6-1. See Table 19-4 for a detailed descriptions
of commands.
EXAMPLE 6-1:
SendCommand
FIGURE 6-7:
XferFastData 4-WIRE
FIGURE 6-8:
XferFastData 2-WIRE (2-phase)
Note:
For 2-wire (4-phase) – on the last clock,
the oPrAcc bit is shifted out on TDO while
clocking in the TMS Header. If the value of
oPrAcc is not ‘1’, the whole operation
must be repeated.
Note:
For 2-wire (4-phase) – the TDO during this
operation will be the LSb of output data.
The rest of the 31 bits of the input data are
clocked in and the 31 bits of output data
are clocked out. For the last bit of the input
data, the TMS Footer = 1 is set.
Note:
The 2-phase XferData is only used when
talking to the PE. See Section 16.0 “The
for
more
information.
// Select the Fastdata Register
SendCommand(ETAP_FASTDATA)
// Send/Receive 32-bit Data
oData = XferFastData(32’h0x12)
TMS
TDI
TDO
iMSb
iLSb
‘1’
TCK
oLSb
oMSb
‘1’
‘0’
‘1’
TMS Header = 100
PrAcc
Data (32’h0x12)
Data (MSb) + TMS = 1
TMS Footer = 10
TDI = X
TMS = 1
TDI = X
TDI =
TMS = 0
TDI =
TMS = 0
TDI = 0
TMS = 1
TMS Header = 100
Data (32’h0x12)
TMS Footer = 10
iLSb
PGEDx
PGECx
PrAcc
TMS = 1
MSb
Data (MSb) TMS = 1
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