Agilent Technologies 35670-90066 manual A13 Primary Keypad, Signal Name, A11 Location

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A11 Location

Agilent 35670A

Voltages and Signals

 

A13 Primary Keypad

A13 Primary Keypad

The following table lists signals routed between the A11 Keyboard Controller assembly and the A13 Primary Keypad assembly. This table shows several things — if the assembly generates or uses the signal. A description of each signal follows the table.

Signal Name

A11 Location

A11

A13

 

 

 

 

CHANA

U1 pin 21

S

 

 

 

 

CHANB

U1 pin 6

S

 

 

 

 

COL0

U1 pin 5

S

 

 

 

 

COL1

U1 pin 4

S

 

 

 

 

COL2

U1 pin 3

S

 

 

 

 

COL3

U1 pin 2

S

 

 

 

 

COL4

U1 pin 1

S

 

 

 

 

COL5

U1 pin 27

S

 

 

 

 

COL6

U1 pin 26

S

 

 

 

 

COL7

U1 pin 25

S

 

 

 

 

HRNGAn

U3 pin 2

S

 

 

 

 

HRNGBn

U3 pin 4

S

 

 

 

 

HRNGCn

U3 pin 6?

S

 

 

 

 

HRNGDn

U3 pin 8?

S

 

 

 

 

OVLDAn

U2 pin 4

S

 

 

 

 

OVLDBn

U2 pin 5

S

 

 

 

 

OVLDCn

U2 pin 6

S

 

 

 

 

OVLDDn

U2 pin 7

S

 

 

 

 

ROW0

U1 pin 13

S

 

 

 

 

ROW1

U1 pin 14

S

 

 

 

 

ROW2

U1 pin 15

S

 

 

 

 

ROW3

U1 pin 16

S

 

 

 

 

ROW4

U1 pin 17

S

 

 

 

 

ROW5

U1 pin 22

S

 

 

 

 

ROW6

U1 pin 23

S

 

 

 

 

SRCn

U2 pin 9

S

 

 

 

 

+5 V

U1 pin 19

 

 

 

 

Gnd

U1 pin 12

SThis assembly is the source of the signal.

• This assembly uses the signal.

CHANA —

These lines indicate the RPG’s direction and offset.

CHANB

 

COL0 - COL7

Column 0 - Column 7 — A high-to-low transition on one column line indicates that a key in

 

that column was pressed. After the A11 Keyboard Controller assembly’s microprocessor

 

determines the keypad row location and the key number, the microprocessor sets columns 0 to

 

5 low which forces SINTFPn low. A high-to-low transition on SINTFPn informs the A7 CPU

 

assembly that a key was pressed.

HRNGAn

 

9-21

Page 365
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Agilent Technologies 35670-90066 manual A13 Primary Keypad, Signal Name, A11 Location