Memory Write | Analog Devices ADSP-21020 instruction

ADSP-21020

CLKIN

ADDRESS,

SELECT

tDAP

	DMPAGE,
	PMPAGE
		tDAWH	tDWHA
	tDAWL	tWW	tDWHA
	tDAWL	tWW
	DMWR,		tWWR
	PMWR		tWWR

tDCKWL	tWDE		tHDWH
			tDDWH
DATA
	t DWAK		tDDWR
	t DAAK	tSAK	tHAK

DMACK,

PMACK

DMRD,

PMRD

Figure 11. Memory Write

REV. C

–21–

Image 21

Analog Devices ADSP-21020 manual Memory Write

Contents

ADSP-21020 ADSP-21020 Address Generators and Program Sequencer Interrupts Pin Name Type Function Dmpage ResetDmts Clkiin If condition ComputeIf condition Compute DMIa, Mb = dreg Notation Meaning ItalicsName Description Fixed-Point Floating-Point = MRB MRF = MRF = SAT MRF = SAT MRB MRF MRB = MRF= MRB MRF = MRF = RND MRF = RND MRB Shifter Shifter Immediate Vector Address Hex Function Fixed-PointIRQ3 IRQ2 Parameter Test Conditions Min Max Unit Grade Parameter Min Max Unit Timing Requirement Reset Setup before Clkin High 29 + DT/2Clkin Period 150 Clkin Width High Hold after Clkin High Pulse Width TCK +TDTEX Clkin High to Timexp FLAG3-0OUTDelay from Clkin High FLAG3-0INSetup before Clkin High 19 + 5DT/16Clkin High to FLAG3-0OUTEnable Clkin High to FLAG3-0OUTDisable Clkin High to Memory Interface Enable 25 + DT/2 Memory Interface Disable to LowTiming Requirement Hold after Clkin High XTS Delay after Address, Select 28 + 7DT/8 Setup before Clkin High 14 + DT/4XTS Delay after Low 16 + DT/2 Switching Characteristic XACK Delay from XRD Low + DT/2 XACK Delay from Address + 7DT/8XACK Setup before Clkin High + DT/4 XACK Hold after Clkin High Switching Characteristic Memory Read XACK Delay from XWR Low 15 + DT/2 XACK Delay from Address, Select 27 + 7DT/8Data Setup before XWR High + DT/2 Data Disable before XWR XRD Low + 3DT/8 Memory Write System Inputs Setup before TCK High TDI, TMS Setup before TCK HighPulse Width 200 160 132 120 Switching Characteristic TDO Delay from TCK Low Ieee 1149.1 Test Access Port Output Enable/Disable Output disable time tDIS is the difference between Capacitive Loading Example Type Pins SwitchPin Ptotal = Pext + 5 V 3 Iddin typ = 0.210 + 1.15 = 1.36 W Bottom View Ribbon Cable 3 0.1 inches ADSP-21020 ADSP-21020 PGA PIN Location Name Inches Millimeters Symbol MIN MAX Ordering Guide