Artesyn ATCA-7365 Installation and Use (May 2014) - Manual (Page 172)

Maps and Registers
ATCA-7365 Installation and Use (6806800K65M) 172
6.3.3.3.2 Logical Device Configuration Registers
Used to access the registers that are assigned to each logical unit. The Super IO supports two
logical units and has two sets of logical device registers. The two logical devices are UART1
(Logical Number 4) and UART2 (Logical Number 5). A separate set (bank) of control and
configuration registers exists for each logical device and is selected with the Logical Device
Number Register. The INDEX PORT is used to select a specific logical device register. These
registers are then accessed through the DATA PORT. The Logical Device registers are accessible
only when the device is in the Configuration state.
The logical register addresses are shown in the tables below.
Table 6-17 Logical Device Configuration Register Summary
Index Address Description
0x30 Enable
0x60 Base IO Address MSB
0x61 Base IO Address LSB
0x70 Primary Interrupt Select
0x74 Reserved
0x75 Reserved
0xF0 Reserved
Table 6-18 Logical Device Enable Register
Index Address: 0x30
Bit Description Default Access
0 Logical Device Enable:
0: disabled. Currently selected device is inactive.
1: enabled. . The currently selected device is enabled. 1 LPC: r/w
7:1 Reserved 0 LPC: r