SERIES AP470 ACROPACK
USER
’S MANUAL
Acromag, Inc. Tel: 248-295-0310
- 24 -
http://www.acromag.com
- 24 -
www.acromag.com
Module Location In System Register (Read Only)
(BAR0 + 0x0000 0004)
This read only register is used identify the module’s plugin location in a
system.
Table 3.8 Location Register
Note that any registers/bits not
mentioned will remain at the
default value logic low.
Bit(s)
FUNCTION
2 to 0
Module Site Location Bits. These bits identify the location on
the carrier of the AP module.
000
Carrier Site A
001
Carrier Site B
010
Carrier Site C
011
Carrier Site D
7 to 3
Module Slot Location Bits. These bits identify the slot location
in a system of the AP module. The Carrier may use backplane
signals as in a VPX system or an on carrier DIP switch to
uniquely identify the system location of the carrier.
XXXXX
System Slot identification bits are described by the
AcroPack carrier card.
31 to 8 Not Used
Port Registers (Standard Mode Ports 0-5, Read/Write)
(BAR0 + 0x0000 0008 –
0x0000 001C)
Six registers are provided to control/monitor 48 possible I/O points. Data is
read from or written to one of six groups of eight I/O lines (Ports 0-5), as
designated by the address and read and write signals. A read of this register
returns the status (ON/OFF) of the I/O point. A write to this register controls
the state of the open-drain output (low level true). The Mask Register is
used to disable writes to I/O ports designated as input ports. That is, when a
port (group of 8 I/O lines) is used as an input port, writes to this port must
be blocked (masked) to prevent contention between the output circuitry
and any external device driving this input line.
Outputs are configured as open-drain with pull-ups installed. Thus, on
power-up or reset, the port registers are reset to 0, forcing the outputs to
be set high (OFF).
