参数资料
型号: RPIXP2800BC
厂商: INTEL CORP
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 650 MHz, RISC PROCESSOR, PBGA1356
封装: 37.50 X 37.50 MM, 1 MM PITCH, FCBGA-1356
文件页数: 117/130页
文件大小: 1782K
代理商: RPIXP2800BC
Intel IXP2800 and IXP2850 Network Processors
Signal Description
Datasheet
87
3.3
Pullup/Pulldown and Unused Pin Guidelines
All unused inputs should be tied to their inactive state. Typical pullup/pulldown resistor values are
in the range of 1 – 5K ohms.
The following unused or floating LVDS input pins should be terminated to VCC25, using a
400-ohm pullup resistor and to VSS, using a 330-ohm pulldown resistor.
SPI4_RPROT_H
SPI4_RPROT_L
SPI4_RCTL_H
SPI4_RCTL_L
SPI4_RPAR_H
SPI4_RPAR_L
FC_RXCPAR_H
FC_RXCPAR_L
FC_RXCSOF_H
FC_RXCSOF_L
FC_RXCDAT_H(0)
FC_RXCDAT_H(1)
FC_RXCDAT_H(2)
FC_RXCDAT_H(3)
FC_RXCDAT_L(0)
FC_RXCDAT_L(1)
FC_RXCDAT_L(2)
FC_RXCDAT_L(3)
FC_TXCFC_H
FC_TXCFC_L
FC_RXCCLK_H
FC_RXCCLK_L
FC_RXCSRB_H
FC_RXCSRB_L
Alternatively, these pins can be tied directly to the 1.4 V (pullup) or 1.0 V (pulldown) supplies
without the need for termination resistors. In this scenario, the 1.0 V / 1.4 V supplies must be
capable of suppling the extra 7 mA of power per differential pin pair required for the termination.
All of the following test signals should be tied to logical 0 when not used:
CLK_STOP
CLK_PLL_BYP
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