Device Type Register - HP E1399A User Manual

Device Type
Register
Chapter 2
WRITE* set high (false). The information presented to U14 by status lines
SR0-SR7 is placed on the internal data bus (DB0-DB7). The user must
provide any latches required to latch and hold this information.
Table 2-5. Status Register Parts
Reference HP Part Number
Designator
RP2 1810-0279
U14 1820-3975
The Device Type Register is an 8-bit register which contains a
device-dependent "module type" identifier. This field is set on the module
by the use of an 8-position DIP switch on the inputs to the data bus line
driver U10, as shown in Figure 2-9. Table 2-7 shows the resistor and IC part
numbers for a Device Type Register.
Figure 2-8. Status Register
Description
Resistor Network, 9- by 4.7kOhm
IC, 74HC541 Octal Line Driver
Configuring the HP E1399A 27