The Trigger Immediate Registerbase + 5D16

A trigger immediate occurs when any 8-bit value is written to the trigger immediate register shown below.

Address

base + 5D16

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

register write: sends trigger (sample) immediate

The Decade Division Register

base +6116

The decade division register is used with the binary division register to divide the reference frequency in order to obtain the desired sample rate. The register bits are defined below.

Address

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

base + 6116

128

64

32

16

8

4

2

1

 

 

 

 

 

 

 

 

 

Purpose

divide by

divide by

divide by

divide by

divide by

divide by

divide by

divide by

 

10E7

10E6

10E5

10E4

1000

100

10

1

 

 

 

 

 

 

 

 

 

Setting

0 - off

0 - off

0 - off

0 - off

0 - off

0 - off

0 - off

0 - off

 

1 - on

1 - on

1 - on

1 - on

1 - on

1 - on

1 - on

1 - on

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Only one bit at a time can be set in this register. The decade division selected (bits 7 - 0 or bit 0 of base + 6316) is combined with the binary division selected (bits 3 - 1 of base + 6316) to derive the sample rate from the reference source.

The Binary Division Register

base + 6316

The binary division register is used with the decade division register to divide the reference frequency in order to obtain the desired sample rate. The register bits are defined below.

Address

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

base + 6316

128

64

32

16

8

4

2

1

 

 

 

 

 

 

 

 

 

Purpose

reserved (bits 7 - 4 must be set to 1000)

divide by

divide by

divide by

divide by

 

 

 

 

 

4

2

1

10E8

 

 

 

 

 

 

 

 

 

Setting

1

0

0

0

0 - off

0 - off

0 - off

0 - off

 

 

 

 

 

1 - on

1 - on

1 - on

1 - on

 

 

 

 

 

 

 

 

 

Appendix C

Register Programming 361

Page 361
Image 361
HP E1429A manual Trigger Immediate Registerbase + 5D16, Decade Division Register, Binary Division Register, Base +6116