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DPC31 HW

Page 22 Version V 1.0

DPC31 HW Description

The queue is empty if ‘InstQ_Wr ptr’ and ‘InstQ_Rd ptr’ point to the same position.

One entry in

the queue always must remain empty (wildcard, any content!); otherwise, an empty queue can’t be

distinguished from a full queue.

The user must control the wrap in the queue. After each entry, the user

places the InstQ_Wr ptr behind this entry on the next free position. If this is the end of the queue, the

InstW_Wr ptr will then have to be placed on the beginning of the queue (wrap around).

Entry 1:

Command_Code

Value1

Value2

Value3

Value4

Entry 2:

Command_Code

Value1

Value2

Value3

Value4

.....

Entry n:

Command_Code

Value1

Value2

Value3

Value4

Wildcard:

reserved

ese

Addr.

InstQ_Wr Ptr (User)

InstQ_Rd Ptr (MAC)

InstQ_Base Ptr

Figure 5.1-2:

Organization of the Instruction_Queue

Table 5.1-3 lists all possible requests with the necessary command codes.

Request Com_

Code

Value1 Value2 Value3 Value4 Comment

MAC_Start 10h - - - - MAC enters Pas_ Idle

MAC_Stop 11h - - - - MAC enters Offline

MAC_New_T

RDY

12h T

RDY7..0

- - - Transfer of T

RDY

User_Leave-

Master

15h - - - - The user initiates a ‘Leave

Master’

DPS_User_Wd 20h 00h=reset

01h=enable

02h=disable

- - - Control of the DPS User_

Watchdog timer

Table 5.1-3:

Overview of User_MAC/DPS Requests

The request ‘MAC_Stop’ is confirmed for the user after it has been executed. For this confirmation, a

corresponding entry is made in the Indication_Queue (refer to Chapter 5.1.3).

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 93 94

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