參數(shù)資料
型號(hào): IDT77010
廠(chǎng)商: Electronic Theatre Controls, Inc.
英文描述: Data Path Interface to Utopia Level 1 Translation Device
中文描述: 數(shù)據(jù)通道接口的烏托邦1級(jí)轉(zhuǎn)換設(shè)備
文件頁(yè)數(shù): 11/21頁(yè)
文件大?。?/td> 141K
代理商: IDT77010
11 of 21
June 24, 2002
IDT77010
Utility Bus Read Operation
When the 77010 decodes the command cells for a Utility bus read operation, it drives the PHY chip select (PHYCS), Address Latch Enable
(ALE),Read(READ) andtheAddressDatabus(Add/Data[7:0]). AtthefallingedgeofALE, thePHY samplestheaddressphaseoftheAdd/Data[7:0].
The77010thenfloatstheAdd/Data[7:0]bus.ThePHY drivestheAdd/Data[7:0]busuntilrisingedgeofPHYCS orREAD.SeeFigure11below
Figure11 UtilityBus ReadOperation
Utility Bus Write Operation
Whenthe77010decodesthecommandcellforaUtilitybuswriteoperation, itdrivesthePHY chipselect(PHYCS), AddressLatchEnable(ALE),
Write(WRITE), andtheAddressDatabus(Add/Data[7:0]). AtthefallingedgeofALE, thePHY samplestheaddressphaseoftheAdd/Data[7:0].The
PHY samplesthewritedatabyteontheAdd/Data[7:0]busattherisingedgeofPHYCS orWRITE.SeeFigure12below
Figure12 UtilityBus WriteOperation
Reply Command Cell
Interrupt Reply Cell Notific ation
ReturncommandcellindicatinganinterrupthasoccurredontheUtilitybus.
Command Fields
Field Value (Hex)
Desc ription
Command
00
InterruptCellReturnCommand
DataA
xx
SeeDataAandDataBTablesonpage14.
DataB
xx
SeeDataAandDataBTablesonpage14.
Address
ALE
PHYCS
Add/Data[7:0]
READ
Read Data from PHY
4308 drw 12
t
ALPW
t
AAL
t
ALA
t
ALR
t
RDPW
t
DRS
t
DRH
SYSCLK
t
PALE
t
PPHY
Address
ALE
PHYCS
Add/Data[7:0]
WRITE
Write Data to PHY
4308 drw 13
t
ALPW
t
AAL
t
ALA
SYSCLK
t
PALE
t
PPHY
t
ALW
t
DWH
t
DWS
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