LTC1092 LINER [Linear Technology], LTC1092 Datasheet - Page 17

• Manufacturer Part Number: LTC1092
• Description: 1-, 2-, 6- and 8-Channel, 10-Bit Serial I/O Data Acquisition Systems
• Manufacturer: LINER [Linear Technology]

5. Microprocessor Interfaces
The LTC1091/LTC1092/LTC1093/LTC1094 can interface
directly (without external hardware) to most popular
microprocessor (MPU) synchronous serial formats (see
Table 1). If an MPU without a dedicated serial port is used,
then three or four of the MPU’s parallel port lines can be
programmed to form the serial link to the LTC1091/
LTC1092/LTC1093/LTC1094. Included here are one serial
interface example and one example showing a parallel port
programmed to form the serial interface.
A
PPLICATI
DATA (D
IN
/D
OUT
CLK
CS
O
)
U
S
I FOR ATIO
U
MUX ADDRESS TO LTC1091
START
Figure 2. LTC1091 Operation with D
DATA LINE AND SENDS
1
W
MPU CONTROLS
RISING CLK AND BEFORE
SGL/
DIFF
2
DATA LINE AFTER 4TH
THE 4TH FALLING CLK
U
MUST RELEASE
ODD/
SIGN
PROCESSOR
3
BY LTC1091
LATCHED
MSBF
MSBF
Table 1. Microprocessors with Hardware Serial Interfaces
Compatible with the LTC1091/LTC1092/LTC1093/LTC1094
Motorola
RCA
Hitachi
National Semiconductor
Texas Instruments
*Requires external hardware
MICROWIRE is a trademark of National Semiconductor Corp.
4
IN
PART NUMBER
MC6805S2, S3
MC68HC11
MC68HC05
CDP68HC05
HD6305
HD63705
HD6301
HD63701
HD6303
HD64180
COP400 Family
COP800 Family
NS8050U
HPC16000 Family
TMS7002
TMS7042
TMS70C02
TMS70C42
TMS32011*
TMS32020
and D
LTC1091 TAKES CONTROL OF DATA LINE
ON 4TH FALLING CLK
OUT
A/D RESULT BACK TO MPU
DATA LINE AND SENDS
Tied Together
LTC1091 CONTROLS
B9
LTC1093/LTC1094
LTC1091/LTC1092
B8
TYPE OF INTERFACE
SPI
SPI
SPI
SPI
SCI Synchronous
SCI Synchronous
SCI Synchronous
SCI Synchronous
SCI Synchronous
CSI/O
MICROWIRE
MICROWIRE/PLUS
MICROWIRE/PLUS
MICROWIRE/PLUS
Serial Port
Serial Port
Serial Port
Serial Port
Serial Port
Serial Port
1091/2/3/4 F02
• • •
TM
17