參數(shù)資料
型號(hào): PIC32MX795F512L-80I/PF
廠商: Microchip Technology
文件頁(yè)數(shù): 9/64頁(yè)
文件大?。?/td> 0K
描述: IC MCU 32BIT 512KB FLASH 100TQFP
標(biāo)準(zhǔn)包裝: 90
系列: PIC® 32MX
核心處理器: MIPS32? M4K?
芯體尺寸: 32-位
速度: 80MHz
連通性: CAN,以太網(wǎng),I²C,SPI,UART/USART,USB OTG
外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,DMA,POR,PWM,WDT
輸入/輸出數(shù): 85
程序存儲(chǔ)器容量: 512KB(512K x 8)
程序存儲(chǔ)器類型: 閃存
RAM 容量: 128K x 8
電壓 - 電源 (Vcc/Vdd): 2.3 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 16x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 100-TQFP
包裝: 托盤
產(chǎn)品目錄頁(yè)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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