LPC47N227TQFP Standard Microsystems (SMSC), LPC47N227TQFP Datasheet - Page 113
LPC47N227TQFP
Manufacturer Part Number
LPC47N227TQFP
Description
Manufacturer
Standard Microsystems (SMSC)
Datasheet
1.LPC47N227TQFP.pdf
(200 pages)
Specifications of LPC47N227TQFP
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Auto Power Management is enabled by Bit[4] in CR07 . When set, this bit allows the ECP or EPP logical
parallel port blocks to be placed into powerdown when not being used.
The EPP logic is in powerdown under any of the following conditions:
1.
2.
The ECP logic is in powerdown under any of the following conditions:
1.
2
Exit Auto Powerdown
The parallel port logic can change powerdown modes when the ECP mode is changed through the ecr
register or when the parallel port mode is changed through the configuration registers.
EPP is not enabled in the configuration registers.
EPP is not selected through ecr while in ECP mode.
ECP is not enabled in the configuration registers.
SPP, PS/2 Parallel port or EPP mode is selected through ecr while in ECP mode.
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