ADSP-2172 datasheet(39/52 Pages) AD

39 / 52 page

ADSP-2171/ADSP-2172/ADSP-2173

REV. A

–39–

ADSP-2173

Parameter

Min

Max

Unit

Host Interface Port

Separate Data and Address (HMD1 = 0)

Read Strobe and Write Strobe (HMD0 = 0)

Timing Requirement:

tHSU

HA2–0 Setup before Start of Write or Read

1, 2

8ns

tHDSU

Data Setup before End of Write

8ns

tHWDH

Data Hold after End of Write

3ns

tHH

HA2–0 Hold after End of Write or Read

3, 4

3ns

tHRWP

Read or Write Pulse Width

Switching Characteristic:

tHSHK

HACK

Low after Start of Write or Read

1, 2

020

tHKH

HACK

Hold after End of Write or Read

3, 4

020

tHDE

Data Enabled after Start of Read

0ns

tHDD

Data Valid after Start of Read

tHRDH

Data Hold after End of Read

0ns

tHRDD

Data Disabled after End of Read

NOTES

1Start of Write = HWR Low and HSEL Low.

2Start of Read = HRD Low and HSEL Low.

3End of Write = HWR High or HSEL High.

4End of Read = HRD High or HSEL High.

5Read Pulse Width = HRD Low and HSEL Low, Write Pulse Width = HWR Low and HSEL Low.

DATA

HD15–0

HSEL

HWR

HACK

HA2–0

ADDRESS

HSU

HWDH

HRWP

HSHK

HKH

HDSU

DATA

HD15–0

HSEL

HRD

HACK

HA2–0

ADDRESS

HSU

HRWP

HRDH

HKH

HSHK

HRDD

HDE

HDD

Figure 30. Host Interface Port (HMD1 = 0, HMD0 = 0)

Host Write Cycle

Host Read Cycle

ADSP-2172 Datasheet(PDF) 39 Page - Analog Devices

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