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参数资料
型号： 440EPX
厂商： Applied Micro Circuits Corp.
英文描述： PowerPC 440EPx Embedded Processor
中文描述： 嵌入式处理器的PowerPC 440EPx
文件页数： 59/94页
文件大小： 738K
代理商： 440EPX
440EPx – PPC440EPx Embedded Processor
Preliminary Data Sheet
62
AMCC Proprietary
Revision 1.26 – October 15, 2007
USB UTMI Peripheral Interface
USB2DI7:0
Unidirectional data inputs.
I/O
3.3V LVTTL
USB2DO7:0
Unidirectional data outputs.
I/O
3.3V LVTTL
USB2TxRdy
Transmit data ready.
I
3.3V LVTTL
w/pull-down
USB2RxAct
Receive active.
I
3.3V LVTTL
USB2RxDV
Receive valid.
I/O
3.3V LVTTL
w/pull-up
1
USB2RxErr
Receive error.
I/O
3.3V LVTTL
1
USB2LS0:1
Line state 0 and Line state 1.
I
3.3V LVTTL
w/pull-up
USB2TxVal
Transmit valid.
I/O
3.3V LVTTL
1
USB2Susp
Suspend.
I/O
3.3V LVTTL
1
USB2XcvrSel
Transceiver select.
I/O
3.3V LVTTL
1
USB2TermSel
Termination select.
I/O
3.3V LVTTL
1
USB2OM0:1
Operational mode.
I/O
3.3V LVTTL
1
USB2Clk
USB 2.0 Clock (60MHz).
I
3.3V LVTTL
1, 5
USB PHY Peripheral Interface
USB2Xcvr
USB 2.0 differential transceiver.
I/O
5V tolerant
Analog
5
USB2XtalIn
USB2XtalOut
USB 2.0 external crystal (48MHz) or external oscillator (48MHz).
External crystal: In/Out differential must not be less than
500mV.
External oscillator: Connect oscillator with signal swing of 3.3V
between USB2XtalOut and ground.
See Table 19 on page 76.
I/O
Analog
USB2RExt
External resistor connection for bias current.
Use 3.4k
Ω, 1% resistor connected to GND.
I/O
Analog
NAND Flash Interface
NFALE
Address Latch Enable.
O
3.3V LVTTL
1
NFCE0:3
Chip Enable (multiplexed with the PerCS0:3 signals).
O
3.3V LVTTL
1
NFCLE
Command Latch Enable.
Latches operational commands into the NAND Flash.
O
3.3V LVTTL
1
NFRdyBusy
Ready/Busy.
Indicates status of device during program erase or page read.
This signal is wire-OR connected from all NAND Flash devices.
I
3.3V LVTTL
1
NFREn
Read Enable.
Data is latched on the rising edge.
O
3.3V LVTTL
1
NFWEn
Write Enable.
Data is latched on the rising edge.
O
3.3V LVTTL
1
Table 8. Signal Functional Description (Sheet 6 of 9)
Notes:
1. Receiver input has hysteresis
2. Must pull up (recommended value is 3k
Ω to OV
DD (EOVDD for Ethernet)
3. Must pull down (recommended value is 1k
Ω)
4. If not used, must pull up (recommended value is 3k
Ω to OV
DD (EOVDD for Ethernet)
5. If not used, must pull down (recommended value is 1k
Ω)
6. Strapping input during reset; pull-up or pull-down required
Signal Name
Description
I/O
Type
Notes
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440FA002NF1002-N 功能描述:环形MIL规格后盖 RoHS:否 制造商:Amphenol PCD MIL 类型:MIL-DTL-38999 III, IV 系列:AS85049 产品类型:Environmental EMI/RFI Backshells 外壳类型:Straight 外壳大小:18 外壳材质:Aluminum Alloy
440FA002NF1006-N 功能描述:环形MIL规格后盖 RoHS:否 制造商:Amphenol PCD MIL 类型:MIL-DTL-38999 III, IV 系列:AS85049 产品类型:Environmental EMI/RFI Backshells 外壳类型:Straight 外壳大小:18 外壳材质:Aluminum Alloy
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