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): 129/134頁
文件大?。?/td> 1305K
代理商: MC68HC05JB4DWR2
GENERAL RELEASE SPECIFICATION
February 24, 1999
MOTOROLA
UNIVERSAL SERIAL BUS MODULE
MC68HC05JB4
10-28
REV 2
Figure 10-29. OUT Token Data Flow for Receive Endpoint 0
Valid OUT token
received for Endpoint 0
Endpoint 0 Receive Enabled?
(USBEN = 1)
Endpoint 0 Receive Ready to Receive?
(RX0E = 1) && (RXD0F = 0)
Error free DATA packet?
No Response
from USB function
Send NAK
Handshake
Ignore transaction
No response from
USB function
Set RXD0F to 1
Receive Control Endpoint
Interrupt Enabled?
(RXD0IE = 1)
No Interrupt
Valid transaction
Interrupt generated
Endpoint 0 Receive Not Stalled?
(STALL0 = 0)
Send STALL
Handshake
Accept Data
Valid DATA token
received for Endpoint 0?
No Response
from USB function
Time-out
N
Y
Set/clear RSEQ bit
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