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Application Notes

 

 

 

 

 

 

 

 

 

Message Building

 

Table C-2 FLEXchip PACKET SEQUENCE

 

 

 

 

 

PACKET

PACKET

PHASE

WORD

COMMENT

TYPE

NUMBER

 

 

 

 

 

 

 

 

 

 

 

 

 

3rd

VECTOR

A

7

Vector for Address 1: Message Words

 

 

 

 

located at WN = 9 to 11, phase A

 

 

 

 

 

4th

BIW

C

N.A.

If BIWs enabled, then BIW packet sent

 

 

 

 

 

5th

BIW

C

N.A.

If BIWs enabled, then BIW packet sent

 

 

 

 

 

6th

LONG

C

N.A. (10)

Long Address 3 has a vector beginning in

 

ADDRESS

 

 

word 10 of phase C.

 

 

 

 

 

7th

VECTOR

A

8

Vector for Address 2: Message Words

 

 

 

 

located at WN = 12 to 15, phase A

 

 

 

 

 

8th

MESSAGE

A

9

Message information for Address 1

 

 

 

 

 

9th

MESSAGE

A

10

Message information for Address 1

 

 

 

 

 

10th

MESSAGE

A

11

Message information for Address 1

 

 

 

 

 

11th

MESSAGE

A

12

Message information for Address 2

 

 

 

 

 

12th

MESSAGE

A

13

Message information for Address 2

 

 

 

 

 

13th

MESSAGE

A

14

Message information for Address 2

 

 

 

 

 

14th

MESSAGE

A

15

Message information for Address 2

 

 

 

 

 

15th

VECTOR

C

10

Vector for Long Address 3: Message

 

 

 

 

Words located at WN = 14 - 15, phase C

 

 

 

 

 

16th

MESSAGE

C

11

Second word of Long Vector is first

 

 

 

 

message information word of Address 3.

 

 

 

 

 

17th

MESSAGE

C

14

Message information for Address 3

 

 

 

 

 

18th

MESSAGE

C

15

Message information for Address 3

 

 

 

 

 

The first message is built by relating packets 1, 3, and 8–10. The second message is built by relating packets 2, 7, and 11–14. The third message is built by relating packets 6 and 15–18. Additionally, the host may process block information in packets 4 and 5 for time setting information.

MOTOROLA

MC68175/D, Preliminary

C-7

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