參數(shù)資料
型號: DSPIC30F3014-20I/ML
廠商: Microchip Technology
文件頁數(shù): 34/153頁
文件大?。?/td> 0K
描述: IC DSPIC MCU/DSP 24K 44QFN
產(chǎn)品培訓(xùn)模塊: 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
dsPIC30F Interrupts
dsPIC30F Motor Control PWM
dsPIC Timers
Asynchronous Stimulus
dsPIC30F Addressing Modes - Part 2
dsPIC30F Architecture - Part 2
dsPIC30F 12-bit ADC Part 1
標(biāo)準(zhǔn)包裝: 45
系列: dsPIC™ 30F
核心處理器: dsPIC
芯體尺寸: 16-位
速度: 20 MIPS
連通性: I²C,SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 30
程序存儲器容量: 24KB(8K x 24)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 1K x 8
RAM 容量: 2K x 8
電壓 - 電源 (Vcc/Vdd): 2.5 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 13x12b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-VQFN 裸露焊盤
包裝: 管件
配用: XLT44QFN2-ND - SOCKET TRAN ICE 44QFN/40DIP
AC164322-ND - MODULE SOCKET MPLAB PM3 28/44QFN
其它名稱: DSPIC30F301420IML
2010 Microchip Technology Inc.
DS70138G-page 129
dsPIC30F3014/4013
18.6.2
20-BIT AC-LINK MODE
The 20-bit AC-Link mode allows all bits in the data time
slots to be transmitted and received but does not main-
tain data alignment in the TXBUF and RXBUF
registers.
The 20-bit AC-Link mode functions similar to the Multi-
channel mode of the DCI module, except for the duty
cycle of the Frame Synchronization signal. The AC-
Link Frame Synchronization signal should remain high
for 16 CSCK cycles and should be low for the following
240 cycles.
The 20-bit mode treats each 256-bit AC-Link frame as
sixteen, 16-bit time slots. In the 20-bit AC-Link mode,
the module operates as if COFSG<3:0> = 1111 and
WS<3:0> = 1111. The data alignment for 20-bit data
slots is ignored. For example, an entire AC-Link data
frame can be transmitted and received in a packed
fashion by setting all bits in the TSCON and RSCON
SFRs. Since the total available buffer length is 64 bits,
it would take 4 consecutive interrupts to transfer the
AC-Link frame. The application software must keep
track of the current AC-Link frame segment.
18.7
I2S Mode Operation
The DCI module is configured for I2S mode by writing
a value of ‘01’ to the COFSM<1:0> control bits in the
DCICON1 SFR. When operating in the I2S mode, the
DCI module generates Frame Synchronization signals
with a 50% duty cycle. Each edge of the Frame
Synchronization signal marks the boundary of a new
data word transfer.
The user must also select the frame length and data
word size using the COFSG and WS control bits in the
DCICON2 SFR.
18.7.1
I2S FRAME AND DATA WORD
LENGTH SELECTION
The WS and COFSG control bits are set to produce the
period for one half of an I2S data frame. That is, the
frame length is the total number of CSCK cycles
required for a left or a right data word transfer.
The BLEN bits must be set for the desired buffer length.
Setting BLEN<1:0> = 01 produces a CPU interrupt,
once per I2S frame.
18.7.2
I2S DATA JUSTIFICATION
As per the I2S specification, a data word transfer, by
default, begins one CSCK cycle after a transition of the
WS signal. A ‘MSb left justified’ option can be selected
using the DJST control bit in the DCICON1 SFR.
If DJST = 1, the I2S data transfers are MSb left justified.
The MSb of the data word is presented on the CSDO
pin during the same CSCK cycle as the rising or falling
edge of the COFS signal. The CSDO pin is tri-stated
after the data word has been sent.
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