LTC2983
17
2983fc
For more information www.linear.com/LTC2983
Table 3. Channel Assignment Memory Map
CHANNEL ASSIGNMENT
NUMBER
CONFIGURATION
DATA START
ADDRESS
CONFIGURATION
DATA
ADDRESS + 1
CONFIGURATION
DATA
ADDRESS + 2
CONFIGURATION
DATA END
ADDRESS + 3
SIZE (BYTES)
CH1 0x200 0x201 0x202 0x203 4
CH2 0x204 0x205 0x206 0x207 4
CH3 0x208 0x209 0x20A 0x20B 4
CH4 0x20C 0x20D 0x20E 0x20F 4
CH5 0x210 0x211 0x212 0x213 4
CH6 0x214 0x215 0x216 0x217 4
CH7 0x218 0x219 0x21A 0x21B 4
CH8 0x21C 0x21D 0x21E 0x21F 4
CH9 0x220 0x221 0x222 0x223 4
CH10 0x224 0x225 0x226 0x227 4
CH11 0x228 0x229 0x22A 0x22B 4
CH12 0x22C 0x22D 0x22E 0x22F 4
CH13 0x230 0x231 0x232 0x233 4
CH14 0x234 0x235 0x236 0x237 4
CH15 0x238 0x239 0x23A 0x23B 4
CH16 0x23C 0x23D 0x23E 0x23F 4
CH17 0x240 0x241 0x242 0x243 4
CH18 0x244 0x245 0x246 0x247 4
CH19 0x248 0x249 0x24A 0x24B 4
CH20 0x24C 0x24D 0x24E 0x24F 4
APPLICATIONS INFORMATION
Table 4. Channel Assignment Data
SENSOR TYPE SENSOR SPECIFIC CONFIGURATION
Channel
Assignment
Memory Location
Configuration Data
Start Address
Configuration Data
Start Address + 1
Configuration Data
Start Address + 2
Configuration Data
Start Address + 3
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Unassigned
(Default)
Type = 0 Channel Disabled
Thermocouple Type = 1 to 9 Cold Junction Channel
Assignment [4:0]
SGL=1
DIFF=0
OC
Check
OC Current
[1:0]
0 0 0 0 0 0 Custom
Address [5:0]
Custom
Length - 1 [5:0]
RTD Type = 10 to 18 R
SENSE
Channel Assignment
[4:0]
2, 3, 4 Wire Excitation
Mode
Excitation
Current [3:0]
Curve
[1
:0]
Custom
Address [5:0]
Custom
Length - 1 [5:0]
Thermistor Type = 19 to 27 R
SENSE
Channel Assignment
[4:0]
SGL=1
DIFF=0
Excitation
Mode
Excitation Current
[3:0]
0 0 0 Custom
Address [5:0]
Custom
Length - 1 [5:0]
Diode Type = 28 SGL=1
DIFF=0
2 to 3
Reading
Avg
on
Current
[1:0]
Ideality Factor (2, 20) Value from 0 to 4 with 1/1048576 Resolution
All Zeros Use Factory Set Default in ROM
Sense Resistor Type = 29 Sense Resistor Value (17, 10) Up to 131,072Ω with 1/1024Ω Resolution
Direct ADC Type = 30 SGL=1
DIFF=0
Not Used
Reserved Type = 31 Not Used
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