UM0934 datasheet(70/113 Pages) STMICROELECTRONICS

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Management information base (MIB)

UM0934

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Doc ID 17389 Rev 2

6.5.6

0005h (MAC group addresses)

This object stores the values of the 5 MAC group addresses. (refer to [2]).

Read/write confirm data format:

The same as request.

6.5.7

0006h (invalid frame counter)

This object stores the number of the invalid received MAC frames.

After checking FI and Ns parameters in the received MAC frame, the counter is increased if

at least one of the two following events occurred:

●

The frame indicator parameter (FI) is not equal to LONG_MAC_FRAME (0000h) even if

the frame type check is disabled (in Monitor modes only)

●

The number of subframes (Ns field) in a received MAC frame is not correct

●

The CRC field is wrong (even if CRC check is disabled, Section 6.5.9).

The confirm message of a CMD_ReadDBRequest returns the current value of the counter

without changing it. The CMD_WriteDBRequest resets the value of the counter (0) and the

confirm message returns the reset value (0).

Table 81.

MIB object 0004h: Write error data format

Byte

Returned value

Error description

ERR_UNAVAILABLE_RESOURCE

The modem is not configured as MAC

ERR_ILLEGAL_DATA_COMMAND

Wrong number of data bytes

ERR_REQUEST_NOT_ALLOWED

The modem is configured as Monitor

Table 82.

MIB object 0005h: Write request data format

Byte

Label

Description

Available range

Factory default

0..1

MAC group address 0

1st MAC group address

0000h ... 0FFFh

0000h

2..3

MAC group address 1

2nd MAC group address

0000h ... 0FFFh

0000h

4..5

MAC group address 2

3rd MAC group address

0000h ... 0FFFh

0000h

6..7

MAC group address 3

4th MAC group address

0000h ... 0FFFh

0000h

8..9

MAC group address 4

5th MAC group address

0000h ... 0FFFh

0000h

Table 83.

MIB object 0005h: Write error data format

Byte

Returned value

Error description

ERR_UNAVAILABLE_RESOURCE The modem is not configured as MAC

ERR_ILLEGAL_DATA_COMMAND Wrong number of data bytes or at least one address value out of range

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