ZyXEL Communications omni series user manual Register Descriptions, Not

Read the value from S38 using ATS38?

Convert it to binary, using the following weight table:

Bit	Binary value	Decimal value	Hexadecimal value
0	00000001	1	$01
1	00000010	2	$02
2	00000100	4	$04
3	00001000	8	$08
4	00010000	16	$10
5	00100000	32	$20
6	01000000	64	$40
7	10000000	128	$80

To set bit 3 to 1 (binary), do a logic OR operation with the value.

Operation	Example-1			Example-2
	Binary	Dec.	Hex	Binary	Dec.	Hex.
	10001000	136	$88	01000000	64	$40
OR	00001000	8	$08	00001000	8	$08
	10001000	136	$88	01001000	72	$48

To set bit 3 to 0 (binary), you must invert the value using a logic NOT operation and then do an logic AND operation.

NOT	00001000	8	$08	00001000	8	$08
	11110111	247	$F7	11110111	247	$F7
AND	10001000	136	$88	01000000	64	$40
	10000000	128	$80	01000000	64	$40

Finally, using the result decimal value, issue an ATS38=n to set the register.

S-Register Descriptions

The descriptions for each S-register. In most bit-mapped S-registers, the default bit value is 0 (which is the normal situation) and only the non-default situation is described. Some reserved bits are for factory use and the user should not change them.

Values followed by an asterisk * are the factory default settings.

Status Registers and Result Codes 127