參數(shù)資料
型號: LR4500
廠商: LSI Corporation
英文描述: Superscalar Microprocessor(超標(biāo)量微處理器)
中文描述: 超標(biāo)量微處理器(超標(biāo)量微處理器)
文件頁數(shù): 149/172頁
文件大小: 1142K
代理商: LR4500
ICEport Operations
9-17
Cycle 1:
The bus master wins arbitration of the SCbus.
Cycle 2:
The bus master asserts SCTSSn for one cycle to indicate the
start of a new transaction. The bus master also places the
target address on SCAop[31:0] and asserts SCDoEn for a
write transaction, or deasserts SCDoEn for a read transaction.
For a write transaction, the bus master also drives
SCDop[31:0] with the data to be transferred.
Cycle 3:
The ICEport recognizes that it is the transaction target. For a
read transaction, the ICEport places the appropriate data on
the sc_ICEDop[31:0] bus and asserts sc_ICEDoEp. For a
write transaction, the ICEport writes sc_ICEDip[7:0] data into
the appropriate register. The ICEport then asserts
sc_ICERDYp to indicate that the transaction has finished.
Cycle 4:
The ICEport deasserts sc_ICERDYp at the rising edge of
SCLKp. For a read transaction, the ICEport also deasserts
sc_ICEDoEp and the SCbus master must latch the data on
the rising edge of SCLKp at the start of this cycle. At the end
of Cycle 4, the ICEport is ready to begin a new transaction.
9.6.2 Reset
An ICEport system reset occurs when either CRESETn or WRESETn is
asserted for at least one SCLKp cycle. CRESETn must be asserted
when the system is powered up to set the ICEport in a predefined state.
Since the reset signals are synchronous to SCLKp, the ICEport can be
reset even if the ICECLKp clock is not running.
An ICEport system reset performs the following functions:
RxOverrun and RxRDY bits in the Rx Status Register are cleared,
indicating that the Rx Data Register is undefined.
The RxRXRDYPe bit in the Rx Setup Register is cleared. This
causes the IRXRDYp (sc_ICEINTp) signal to be deasserted.
The TxRDY bit in the Tx Status Register is set.
相關(guān)PDF資料
PDF描述
LRC1220LTC750.025R Fractional Ohm
LRC Fractional Ohm
LRC1220H Fractional Ohm
LRC1220HTC1000.025R Fractional Ohm
LRC1220HTC1000.05R Fractional Ohm
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LR4-550 功能描述:可復(fù)位保險絲 5.5A 20V 100A Imax RoHS:否 制造商:Bourns 電流額定值: 電阻:7.5 Ohms 最大直流電壓: 保持電流:0.1 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 跳閘電流:0.6 A 引線間隔: 系列:MF-PSHT 工作溫度范圍:- 40 C to + 125 C
LR4-550F 功能描述:可復(fù)位保險絲 5.5A 20V 100A Imax RoHS:否 制造商:Bourns 電流額定值: 電阻:7.5 Ohms 最大直流電壓: 保持電流:0.1 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 跳閘電流:0.6 A 引線間隔: 系列:MF-PSHT 工作溫度范圍:- 40 C to + 125 C
LR4-550R 功能描述:可復(fù)位保險絲 RoHS:否 制造商:Bourns 電流額定值: 電阻:7.5 Ohms 最大直流電壓: 保持電流:0.1 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 跳閘電流:0.6 A 引線間隔: 系列:MF-PSHT 工作溫度范圍:- 40 C to + 125 C
LR4-550R-2 功能描述:可復(fù)位保險絲 LR4-550R-2 RoHS:否 制造商:Bourns 電流額定值: 電阻:7.5 Ohms 最大直流電壓: 保持電流:0.1 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 跳閘電流:0.6 A 引線間隔: 系列:MF-PSHT 工作溫度范圍:- 40 C to + 125 C
LR4-550RAF 功能描述:可復(fù)位保險絲 5.5A STRAP Polyswitch PTC RESET RoHS:否 制造商:Bourns 電流額定值: 電阻:7.5 Ohms 最大直流電壓: 保持電流:0.1 A 安裝風(fēng)格:SMD/SMT 端接類型:SMD/SMT 跳閘電流:0.6 A 引線間隔: 系列:MF-PSHT 工作溫度范圍:- 40 C to + 125 C