參數(shù)資料
型號(hào): DSPIC33FJ16GP304-I/PT
廠商: Microchip Technology
文件頁數(shù): 29/176頁
文件大?。?/td> 0K
描述: IC DSPIC MCU/DSP 16K 44TQFP
產(chǎn)品培訓(xùn)模塊: Asynchronous Stimulus
特色產(chǎn)品: PIC24FJ/33FJ MCUs & dsPIC? DSCs
標(biāo)準(zhǔn)包裝: 160
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(cè)/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 35
程序存儲(chǔ)器容量: 16KB(16K x 8)
程序存儲(chǔ)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-TQFP
包裝: 托盤
產(chǎn)品目錄頁面: 652 (CN2011-ZH PDF)
配用: DV164033-ND - KIT START EXPLORER 16 MPLAB ICD2
DM240001-ND - BOARD DEMO PIC24/DSPIC33/PIC32
122
AT89C5131
4136C–USB–04/05
Bulk/Interrupt OUT
Transactions in Ping-pong
Mode
Figure 60. Bulk/Interrupt OUT Transactions in Ping-pong Mode
An endpoint will be first enabled and configured before being able to receive Bulk or
Interrupt packets.
When a valid OUT packet is received on the endpoint bank 0, the RXOUTB0 bit is set by
the USB controller. This triggers an interrupt if enabled. The firmware has to select the
corresponding endpoint, store the number of data bytes by reading the UBYCTLX and
UBYCTHX registers. If the received packet is a ZLP (Zero Length Packet), the
UBYCTLX and UBYCTHX register values are equal to 0 and no data has to be read.
When all the endpoint FIFO bytes have been read, the firmware will clear the RXOUB0
bit to allow the USB controller to accept the next OUT packet on the endpoint bank 0.
This action switches the endpoint bank 0 and 1. Until the RXOUTB0 bit has been
cleared by the firmware, the USB controller will answer a NAK handshake for each OUT
requests on the bank 0 endpoint FIFO.
When a new valid OUT packet is received on the endpoint bank 1, the RXOUTB1 bit is
set by the USB controller. This triggers an interrupt if enabled. The firmware empties the
bank 1 endpoint FIFO before clearing the RXOUTB1 bit. Until the RXOUTB1 bit has
been cleared by the firmware, the USB controller will answer a NAK handshake for each
OUT requests on the bank 1 endpoint FIFO.
The RXOUTB0 and RXOUTB1 bits are alternatively set by the USB controller at each
new valid packet receipt.
The firmware has to clear one of these two bits after having read all the data FIFO to
allow a new valid packet to be stored in the corresponding bank.
A NAK handshake is sent by the USB controller only if the banks 0 and 1 has not been
released by the firmware.
If the Host sends more bytes than supported by the endpoint FIFO, the overflow data
won’t be stored, but the USB controller will consider that the packet is valid if the CRC is
correct.
OUT
DATA0 (n Bytes)
ACK
HOST
UFI
C51
Endpoint FIFO Bank 0 - Read Byte 1
RXOUTB0
Endpoint FIFO Bank 0 - Read Byte 2
Endpoint FIFO Bank 0 - Read Byte n
Clear RXOUTB0
OUT
DATA1 (m Bytes)
ACK
RXOUTB1
Endpoint FIFO Bank 1 - Read Byte 1
Endpoint FIFO Bank 1 - Read Byte 2
Endpoint FIFO Bank 1 - Read Byte m
Clear RXOUTB1
OUT
DATA0 (p Bytes)
ACK
RXOUTB0
Endpoint FIFO Bank 0 - Read Byte 1
Endpoint FIFO Bank 0 - Read Byte 2
Endpoint FIFO Bank 0 - Read Byte p
Clear RXOUTB0
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