參數(shù)資料
型號(hào): IDT88K8483BRI
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 123/162頁
文件大?。?/td> 0K
描述: IC SPI-4 EXCHANGE 3PORT 672-BGA
標(biāo)準(zhǔn)包裝: 24
系列: *
其它名稱: 88K8483BRI
63 of 162
October 20, 2006
IDT IDT88K8483
Firmware download flowchart
Example for download sequence
An example pseudo code of how the download sequence is implemented is shown below
DOWNLOAD {
Write RST=0x1
Read EP_STATE // Field is in Embedded Processor State Register (p. 92)
IF(EP_STATE == 1) {
While( !EOF) {
// Read binary data until end of file is encountered
While(IFIFO_STATUS != 0) && (time < Wait_time)) { // Field is in Microprocessor Mailbox Input FIFO Status Register (p. 91)
IF(time == Wait_time)
return “Wait time error”
else {
Write I_FIFO = 32 bytes Binary data or less than 32 if EOF is encountered
Write Length = Binary data length written to I_FIFO // Length field is in Microprocessor Mailbox Input FIFO Length Register (p. 90)
// Writing to the Length register causes the embedded processor to download from the I_FIFO mailbox.
}
// End of While STATUS loop
}
// End of while !EOF loop
} // End of IF Ep_State loop
Start
ReadReg 0x16
(EP_READY)
Result
ReadReg 0x14
(IFIFO_STATUS)
Result
WriteReg 0x10
(DATA)
Is 32 bytes written?
Or EOF reached
WriteReg 0x11
(LENGTH)
Is EOF reached
0
11
0
Yes
No
Yes
No
Start
(Download is not successful)
Result
ReadReg 0x16
0x7
End
!=0x7
(Download is successful)
1
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