Motorola MVME162LX 200 Series, Инструкция по установке и эксплуатации, Страница: 44 / 208

1-30 Computer Group Literature Center Web Site
Board Level Hardware Description
1
Notes
1. For a complete description of the register bits, refer to the
data sheet for the specific chip. For a more detailed memory
map, refer to the following detailed peripheral device
memory maps
2. The SCC is an 8-bit device located on an MCchip private
data bus. Byte access is required.
3. Writes to the LCSR in the VMEchip2 must be 32 bits.
LCSR writes of 8 or 16 bits terminate with a TEA signal.
Writes to the GCSR may be 8, 16 or 32 bits. Reads to the
LCSR and GCSR may be 8, 16 or 32 bits. Byte reads should
be used to read the interrupt vector.
4. This area does not return an acknowledge signal. If the
local bus timer is enabled, the access times out and is
terminated by a TEA signal.
5. Size is approximate.
6. Port commands to the 82596CA must be written as two 16-
bit writes: upper word first and lower word second.
7. Refer to the Flash and EPROM Interface section in the
MCchip description in Chapter 3.
8. Not used.
9. To use this area, the ECC mezzanine board must be
installed. If it is not installed, no acknowledge signal is
returned; if the local bus timer is enabled, the access times
out and is terminated by a TEA signal.
$FFFCC000 - $FFFCFFFF MK48T08 & Enable
Flash writes D32-D8 16 KB 1, 7
$FFFD0000 - $FFFEFFFF Reserved - - 128 KB 4
Table 1-5. Local I/O Devices Memory Map (Continued)
Address Range Devices Accessed Port
Width
Size Notes