Texas Instruments TMS320C645x manual Sharing of Isdr Bits

Models: TMS320C645x

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Interrupt Conditions

Figure 54. Sharing of ISDR Bits

ISDR

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

LSU

Error,

Tx

Rx

ISDR

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

Doorbell

Doorbell

Doorbell

Doorbell

As an example, if bit 29 of the ISDR is set, this indicates that there is a pending interrupt on either the TX CPPI queue 2 or RX CPPI queue 2. Figure 55 illustrates the decode routing.

TX

2

RX

2

Figure 55. Example Diagram of Interrupt Status Decode Register Mapping

TX

 

 

Interrupt

0

Decode

1

29

2

 

3

29

 

4

 

5

29

 

6

 

7

29

 

TX

 

 

29

0

 

1

 

 

29

2

 

3

 

 

29

4

 

5

 

 

29

6

 

7

 

INTDST0

INTDST1

INTDST2

INTDST3

INTDST4

INTDST5

INTDST6

INTDST7

84

Serial RapidIO (SRIO)

SPRU976 –March 2006

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Page 84
Image 84
Texas Instruments TMS320C645x manual Sharing of Isdr Bits