Register Descriptions; Manufacturer Identification Register; Device Identification Register; Card Status/Control Register - Keysight VXI Bus 75000 C Series User And Programming Manual

Keysight E1458A Register Information

Register Descriptions

The following pages detail each register in the Keysight E1458A Digital I/O
Module. Registers are listed by name in the order shown in the register map,
Table B-2.

Manufacturer Identification Register

The Manufacturer Identification Register is a 16-bit read-only register with the
Most Significant Byte (MSB) at address 0016 and Least Significant Byte (LSB) at
address 0116. Reading this register returns the Keysight Technologies
identification, FFFF16.

Device Identification Register

The Device Identification Register is a 16-bit read-only register at addresses
0216 and 0316. The Most Significant Byte (0216) returns 0116. The Least
Significant Byte (0316) returns 5516.

Card Status/Control Register

The Card Status/Control Register is a read/write register at addresses 0416 and
0516. The following table shows the register bit patterns:
base+0416
15 14 13
1 MOD ID 1
SR (soft reset). Writing a 1 and then a 0 to this bit resets all digital I/O module
components. SR disables all output ports (all ports become input ports) and sets
all other registers to default values. Reads and writes to the other module
registers will not transfer valid data when SR is asserted. This bit is cleared by a
hard reset.
IEN. Main interrupt enable. Writing a 1 to this bit allows interrupts from port
controller ICs to assert interrupt on the VXIbus. Writing a 0 masks these
interrupts. This bit is cleared by a hard reset, but not by a soft reset.
126
12 11 10 9
1 1 1 BB1
base+0516
8 7 6 5 4
BB0 1 IEN 1 1
Keysight E1458A 96-Channel Digital I/O Module User Guide
Register Descriptions
3 2 1 0
1 1 1 SR