REV. A

AD8152

–13–

Table I. Address and Data Buses

Connection/Current Bit

Output Address Pins

Data Pins

A6

A5

A4

A3

A2

A1

A0

D5

D4

D3

D2

D1

D0

0 = CONNECTION LATCHES

1 = OUTPUT CURRENT LEVEL

MSB

LSB

MSB

LSB

Table II. Connection Data and Address Programming Examples

Connection/

Data Pins

Current Bit

Output Address Pins

(Used to Select Inputs)

Comments

0 = CONNECTION

MSB

LSB

MSB

LSB

A6

A5 A4 A3 A2 A1 A0

D5 D4 D3 D2 D1 D0

0

000000

000000

Program IN00 to OUT00

0

000000

100001

Program IN33 to OUT00

0

100001

011111

Program IN31 to OUT33

0

111111

000000

Broadcast IN00 to All Outputs

0

000000

111111

Disable OUT00

0

100001

111111

Disable OUT33

0

111111

111111

Disable All Outputs (Broadcast)

Table III. Output-Current Level Data and Address Programming Examples

Connection/

Data Pins

Current Bit

Output Address Pins

(Used to Select Inputs)

Comments

1 = CURRENT LEVEL MSB

LSB MSB

LSB

A6

A5 A4

A3 A2 A1 A0

D5

D4

D3

D2 D1 D0

10

0

000

0X

X0

000

Program OUT00 to Current—Code 00 (2 mA)

10

0

000

0X

X1

111

Program OUT00 to Current—Code 15 (32 mA)

11

0

000

1X

X0

111

Program OUT33 to Current—Code 07 (16 mA)

11

1

111

1X

X1

000

Broadcast Current—Code 08 to All

Outputs (18 mA)

Table IV. Basic Control Strobe Functions

RESET CS

WE

RE

UPD Function

0X

XX

XGlobal Reset. Disables all outputs and resets all output current to code 0111 (16 mA).

11

XX

X

Disable All Control Signals. Signal matrix/currents remain the same. D5:D0 are high impedance.

10

01

XWrite Enable. Write D5:D0 data into first rank register addressed by A6:A0.

10

X0

X

Single-Output Readback. Second rank register data for output A6:A0 appears on D5:D0.

10

X

X

0

Global Update. Copy all first rank data into second rank registers.

10

01

0

Transparent Write and Update. D5:D0 immediately control programming. Use

RE as gating signal.