參數(shù)資料
型號： DSPIC33FJ16GP304T-I/ML
廠商： Microchip Technology
文件頁數(shù)： 32/176頁
文件大?。?/td> 0K
描述： IC DSPIC MCU/DSP 16K 44QFN
產(chǎn)品培訓(xùn)模塊： Asynchronous Stimulus
標(biāo)準(zhǔn)包裝： 1,600
系列： dsPIC™ 33F
核心處理器： dsPIC
芯體尺寸： 16-位
速度： 40 MIP
連通性： I²C，IrDA，LIN，SPI，UART/USART
外圍設(shè)備： 欠壓檢測/復(fù)位，POR，PWM，WDT
輸入/輸出數(shù)： 35
程序存儲器容量： 16KB（16K x 8）
程序存儲器類型： 閃存
RAM 容量： 2K x 8
電壓 - 電源 (Vcc/Vdd)： 3 V ~ 3.6 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： 帶卷 (TR)
配用： DV164033-ND - KIT START EXPLORER 16 MPLAB ICD2
DM240001-ND - BOARD DEMO PIC24/DSPIC33/PIC32
其它名稱： DSPIC33FJ16GP304T-I/MLTR
125
AT89C5131
4136C–USB–04/05
Control Transactions
Setup Stage
The DIR bit in the UEPSTAX register will be at 0.
Receiving Setup packets is the same as receiving Bulk Out packets, except that the
RXSETUP bit in the UEPSTAX register is set by the USB controller instead of the
RXOUTB0 bit to indicate that an Out packet with a Setup PID has been received on the
Control endpoint. When the RXSETUP bit has been set, all the other bits of the UEP-
STAX register are cleared and an interrupt is triggered if enabled.
The firmware has to read the Setup request stored in the Control endpoint FIFO before
clearing the RXSETUP bit to free the endpoint FIFO for the next transaction.
Data Stage: Control Endpoint
Direction
The data stage management is similar to Bulk management.
A Control endpoint is managed by the USB controller as a full-duplex endpoint: IN and
OUT. All other endpoint types are managed as half-duplex endpoint: IN or OUT. The
firmware has to specify the control endpoint direction for the data stage using the DIR bit
in the UEPSTAX register.
The firmware has to use the DIR bit before data IN in order to meet the data-toggle
requirements:
If the data stage consists of INs,
the firmware has to set the DIR bit in the UEPSTAX register before writing into the
FIFO and sending the data by setting to 1 the TXRDY bit in the UEPSTAX register.
The IN transaction is complete when the TXCMPL has been set by the hardware.
The firmware will clear the TXCMPL bit before any other transaction.
If the data stage consists of OUTs,
the firmware has to leave the DIR bit at 0. The RXOUTB0 bit is set by hardware
when a new valid packet has been received on the endpoint. The firmware must
read the data stored into the FIFO and then clear the RXOUTB0 bit to reset the
FIFO and to allow the next transaction.
To send a STALL handshake, see “STALL Handshake” on page 128.
Status Stage
The DIR bit in the UEPSTAX register will be reset at 0 for IN and OUT status stage.
The status stage management is similar to Bulk management.
For a Control Write transaction or a No-Data Control transaction, the status stage
consists of a IN Zero Length Packet (see “Bulk/Interrupt IN Transactions in
Standard Mode” on page 123). To send a STALL handshake, see “STALL
For a Control Read transaction, the status stage consists of a OUT Zero Length
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