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LM3S6965 Microcontroller

Register 13: Ethernet MAC Number of Packets (MACNP), offset 0x034

This register holds the number of frames that are currently in the RX FIFO. When NPR is 0, there are no frames in the RX FIFO and the RXINT bit is clear. When NPR is any other value, there is at least one frame in the RX FIFO and the RXINT bit in the MACRIS register is set.

Ethernet MAC Number of Packets (MACNP)

Base 0x4004.8000

Offset 0x034

Type RO, reset 0x0000.0000

 

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

 

 

 

 

 

 

 

 

reserved

 

 

 

 

 

 

 

Type

RO

RO

RO

RO

RO

RO

RO

RO

RO

RO

RO

RO

RO

RO

RO

RO

Reset

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

 

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

 

 

 

 

 

reserved

 

 

 

 

 

 

 

NPR

 

 

Type

RO

RO

RO

RO

RO

RO

RO

RO

RO

RO

RO

RO

RO

RO

RO

RO

Reset

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Bit/Field

Name

Type

Reset

Description

31:6

reserved

RO

0x0000.00

Software should not rely on the value of a reserved bit. To provide

 

 

 

 

compatibility with future products, the value of a reserved bit should be

 

 

 

 

preserved across a read-modify-write operation.

5:0

NPR

RO

0x00

Number of Packets in Receive FIFO

 

 

 

 

The NPR bits represent the number of packets stored in the RX FIFO.

Whilethe NPR fieldisgreaterthan0,the RXINT interruptinthe MACRIS register is set.

November 16, 2008

453

Preliminary

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