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SPD6722QCCE 参数 Datasheet PDF下载

SPD6722QCCE图片预览
型号: SPD6722QCCE
PDF下载: 下载PDF文件 查看货源
内容描述: ISA到PC卡( PCMCIA )控制器 [ISA-to-PC-Card (PCMCIA) Controllers]
分类和应用: 总线控制器微控制器和处理器PC
文件页数/大小: 138 页 / 837 K
品牌: INTEL [ INTEL ]
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PD6710/22 ISA-to-PC-Card (PCMCIA) Controllers  
Bits 1:0 V 1 Power  
PP  
V
Bit 1  
1 Power  
PP  
VPP_PGM  
VPP_VCC  
PC Card Intended Socket Function  
Zero volts to PC Card socket V 1 pin  
Bit 0  
0
0
1
Inactive low  
Inactive low  
Inactive low  
Active high1  
PP  
Selected card V to PC Card socket V  
1
PP  
CC  
0
pin  
1
1
0
1
Active high a  
Inactive low  
Inactive low  
Inactive low  
+12V to PC Card socket V 1 pin  
PP  
Zero volts to PC Card socket V 1 pin  
PP  
1. Under conditions where V 1 power is activated. See Power Controlon page 48.  
PP  
These bits are intended to be used to control the power to the VPP1 pin of the PC Card.  
Bit 4 V Power  
CC  
Power is not applied to the card: the -VCC_3 and -VCC_5 socket power control pins are  
inactive high.  
0
1
Power is applied to the card: if bit 5 is 0, or bit 5 is 1and -CD2 and -CD1 are active low,  
then the selected -VCC_3 or -VCC_5 socket power control pin is active low.  
Depending on the value of bit 5 below, setting this bit to 1will cause power to be applied to the  
card. The VCC 3.3V bit (see bit 1, Misc Control 1on page 70) determines whether 3.3V or 5V  
power is applied.  
Bit 5 Auto-Power  
V
and V 1 power control signals are activated independent of the sockets -CD2 and -  
PP  
CC  
0
1
CD1 input levels.  
V
and V 1 power control signals are only activated if the sockets -CD2 and -CD1 inputs  
CC  
PP  
are active low.  
When this bit is set to 1, the PD67XX causes power to the card to be turned on and off  
automatically with the insertion and removal of a PC card from the socket.  
Bit 7 Card Enable  
0
1
Outputs to card socket are not enabled and are floating.  
Outputs to card socket are enabled if -CD1 and -CD2 are active low and bit 4 is 1.  
When this bit is 1, the outputs to the PC Card are enabled if a card is present and card power is  
being supplied. The pins affected include: -CE2, -CE1, -IORD, -IOWR, -OE, -REG, RESET,  
A[25:0], D[15:0], and -WE (see Table 2).  
50  
Datasheet  
 
 
 
 
 
 
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