TP3465 MICROWIRE Interface Device (MID)
July 1999
TP3465 MICROWIRE
TM
Interface Device (MID)
General Description
The MICROWIRE
TM
Interface Device MID gives a general
microprocessor (such as National Series 32000 proces-
sors Intel 80C188 80C86 or 80286 Motorola 6800 and
68000 family of processors) the ability to communicate effi-
ciently with up to eight peripheral devices via the serial MI-
CROWIRE interface The MID causes each of the peripheral
devices to appear to the
mP
as memory mapped locations
by performing all the data serialization and transfer proto-
cols to and from the peripherals
Features
Y
Y
Y
Y
Y
Y
Y
Y
Y
Applications
Y
Y
Y
Y
Y
ISDN Terminal Adapters
Digital Line cards (ISDN and Non ISDN)
Analog Linecards using National COMBO
Interfacing to industry standard serial EEPROMs
Interfacing to industry standard MICROWIRE peripheral
devices such as Analog to Digital Converters LCD driv-
ers clock generators
Y
Y
Y
Multiplexed and Non-multiplexed microprocessor bus
compatible
National Intel and Motorola microprocessor bus
compatible
Microprocessor Clock (CKIN) up to 20 MHz
MICROWIRE clock speeds up to 5 MHz
Directly compatible with 8- and 16-bit MICROWIRE
peripherals
Commercial temperature range 0C to +70C
TP3465 for 8 Chip Select output
Memory mapped peripherals
Programmable MICROWIRE Clock to communicate with
devices of different speeds
Operates as MICROWIRE bus master or slave
28-pin PLCC Package
CMOS Low Power
Block Diagram
TL H 10803 鈥?1
FIGURE 1 MICROWIRE Interface Device MID
COMBO Series 32000 and TRI-STATE are registered trademarks of National Semiconductor Corporation
MICROWIRE
TM
is a trademark of National Semiconductor Corporation
C
1999
National Semiconductor Corporation
TL H 10803