參數(shù)資料
型號: MC68HC05JB4DWR2
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PDSO28
封裝: SOIC-28
文件頁數(shù): 131/134頁
文件大?。?/td> 1305K
代理商: MC68HC05JB4DWR2
GENERAL RELEASE SPECIFICATION
February 24, 1999
MOTOROLA
UNIVERSAL SERIAL BUS MODULE
MC68HC05JB4
10-30
REV 2
Figure 10-31. IN Token Data Flow for Transmit Endpoint 0
Transmit Endpoint Enabled?
(USBEN = 1)
Transmit Endpoint ready to Transfer?
(TX0E = 1) && (TXD0F = 0)
No Response
from USB function
Send NAK
Handshake
ACK received and no
Set TXD0F to 1
Transmit Endpoint
Interrupt Enabled?
(TXD0IE = 1)
No Interrupt
Valid transaction
Interrupt generated
Transmit Endpoint not Stalled by firmware?
(STALL0 = 0)
Send STALL
Handshake
Send DATA
Data PID set by T0SEQ
Valid IN token
received for Endpoint 0
N
Y
N
Y
No Response
from USB function
N
Y
Time-out condition occur?
Y
N
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