MPC8272ADS Freescale Semiconductor, MPC8272ADS Datasheet - Page 147
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MPC8272ADS
Manufacturer Part Number
MPC8272ADS
Description
KIT DEVELOPMENT MPC8272
Manufacturer
Freescale Semiconductor
Type
MPUr
Datasheet
1.MPC8272ADS.pdf
(158 pages)
Specifications of MPC8272ADS
Contents
Board
For Use With/related Products
MPC8272
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 147 of 158
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NMIEn = !RstDeb1.com & AbrDeb1.com ;" only abort button depressed
"******************************************************************************
"* local data buffers enable
"******************************************************************************
equations
SyncHardReset_B.clk = SYSCLK ;
SyncHardReset_B.ar = 0;
SyncHardReset_B.ap = 0;
DSyncHardReset_B.clk = SYSCLK ;
DSyncHardReset_B.ar = 0;
DSyncHardReset_B.ap = 0;
SyncHardReset_B := HardReset_B ;
DSyncHardReset_B := SyncHardReset_B.fb ;
DataBufEn_B.oe = H ;
!DataBufEn_B = ( !Cs0_B #
ToolDataBufEn_B.oe = H ;
!ToolDataBufEn_B = ( !ToolCs1_B #
"******************************************************************************
"* local data buffers disable (data contention protection)
"******************************************************************************
"* Since with Voyager, hard-reset conf is read from flash/eeprom during HRESET
"* asserted and since these are all consequitive read cycles and since
"* the cycles following hard reset are also reads (boot) the hold-off
"* state machine may be left in NO_HOLD_OFF for HRESET_B asserted duration
"* without warrying about contention between flash and data buffers.
equations
HoldOffCnt.clk = SYSCLK ;
HoldOffCnt.ar = 0;
HoldOffCnt.ap = 0;
HoldOffTc = (HoldOffCnt.fb == 3) ;
when ( (((END_OF_FLASH_EEPROM_READ # END_OF_ATM_READ )
else
!BrdContRegCs_B #
!IntContCs_B #
!Cs4_B #
!AtmUniCsOut_B # " provides data-hold for write
!ToolCs1_B #
!ToolCs2_B ) &
( !BUFFER_HOLD_OFF ) ;
HardReset_B.pin &
HoldOffCnt := HoldOffCnt.fb + 1 ;
& (HoldOffCnt.fb == 0)) #
( !BUFFER_HOLD_OFF ) ;
(HoldOffCnt.fb != 0)) & !(HoldOffCnt.fb == 4) & DSyncHardReset_B.fb ) then
!ToolCs2_B ) &
" covers also hard reset config
Chapter 8. Support
Programmable Logic Equations
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