参数资料
型号: M66290AFP
元件分类: 总线控制器
英文描述: UNIVERSAL SERIAL BUS CONTROLLER, PQFP48
封装: TQFP-48
文件页数: 5/54页
文件大小: 452K
代理商: M66290AFP
USB DEVICE CONTROLLER
M66290AGP/FP
MITSUBISHI <DIGITAL ASSP>
12
Figure 2. shows the examples of interrupt output timing
(1) Endpoint buff er ready interrupt (ex.OUT transaction)
USB
PID
SYNC
Addr Endp CRC EOP
SYNC
PID
DATA
CRC EOP
SYNC
PID
EOP
OUT token packet
Data packet
Hand shake packet (ACK)
INT output
Buff er becomes ready (read enable)
and interrupt occurs
(2) Endpoint buff er not ready interrupt (ex.OUT transaction)
USB
PID
SYNC
Addr Endp CRC EOP
SYNC
PID
DATA
CRC EOP
SYNC
PID
EOP
OUT token packet
Data packet
Hand shake packet (NAK)
INT output
Buff er is in not ready (receiv e disable)
and interrupt occurs
(3) Endpoint buff er not ready interrupt (ex.IN transaction)
USB
PID
SYNC
Addr Endp CRC EOP
SYNC
PID
EOP
IN token packet
Hand shake packet (NAK)
INT output
Buff er is in not ready (transmit disable)
and interrupt occurs
Figure 2. Examples of interrupt output timing
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