Agilent 35670A

Voltages and Signals

 

A102 DC-DC Converter

A102 DC-DC Converter

The following table lists signals routed between the A7 CPU assembly and the

A102 DC-DC Converter assembly. This table shows several things — if the assembly generates or uses the signal or voltage, and if a signal is bidirectional. A description of each signal follows the table.

Signal Name

Pin(s)

A7 P2

A102

 

 

 

 

HSYNCELn

11

S

 

 

 

 

VCLK

13

S

 

 

 

 

VID

15

S

 

 

 

 

VSYNCEL

9

S

 

 

 

 

+12 V

1, 2

 

 

 

 

+5 V

3, 4

 

 

 

 

Gnd

7, 8, 10, 12, 14, 16

 

 

 

 

Not Used

5, 6

 

 

 

 

SThis assembly is the source of the signal.

• This assembly uses the signal.

— This assembly does not use this signal.

HSYNCELn

Horizontal Synchronization — A low on this line causes a horizontal retrace on the

 

A101 Display assembly. Between each HSYNCELn pulse, 560 pixels are sent to the Display

 

assembly.

VCLK

Video Clock — This 20 MHz clock provides the timing reference for HSYNCELn, VID, and

 

VSYNCEL. The rising edge of this clock determines setup and hold times.

VID

Video Data — This is the serial data line for the A101 Display assembly. This line transmits

 

video data to the Display assembly. The video data is transmitted at the VCLK rate between

 

horizontal and vertical retraces (during the time HSYNCELn is high and VSYNCEL is low).

 

Only the first 400 lines of data are displayed after a VSYNCEL pulse.

VSYNCEL

Vertical Synchronization — A high on this line causes a vertical retrace on the A101 Display

 

assembly.

9-37

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Image 381
Agilent Technologies 35670-90066 manual Pins A7 P2 A102