HP manual HP E1368A/69A/70A Registers, Register Definitions

Appendix B

HP E1368A/69A/70A Registers

Register Definitions

All three Microwave Switch modules are register-based devices. See the tables below for register definitions.

Manufacturer ID Register

b + 0016 15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
Write							Undefined

Read**

Manufacturer ID

*Returns FFFF16 = Hewlett-Packard A16 only register-based.

Device Type Register

b + 0216	15	14	13	12	11	10	9		8	7	6	5	4	3	2	1	0
Write								Undefined
Read**							Manufacturer ID

Status/Control Register

	b + 0416		15	14	13		12		11		10		9	8	7	6	5	4			3		2		1	0
	Write*													Undefined
	Read**					Manufacturer ID									B						7F16
						*R = Switch reset to power-on state (all switches open)
						**R = Status “ busy” is true low in bit #7 (FF7F 16)
									Channel Enable Registers
b + 0816		15	14	13		12		11		10		9		8	7	6	5			4			3		2		1	0
Write*																			CH04			CH03		CH02			CH01	CH00
Read*												Always Returns FFFF16

Appendix B HP E1368A/69A/70A Registers 75