ZSSC3008 Datasheet, PDF (29/47 Pages) List of Unclassifed Manufacturers – Sensor Signal Conditioner with Diagnostics

ZSSC3008
Sensor Signal Conditioner with Diagnostics
3.3. Command/Data Bytes Encoding
The 2-byte command sent to the ZSSC3008 consists of 1 byte of command information and 1 byte of data
information. Regardless of whether the command requires data or not, 2 bytes MUST be sent. Table 3.4 lists all
the command/data pairings. (X=don’t care.)
Table 3.4 Command/Data Bytes Encoding
Command
Byte
00_H
20_H
Data
XX_H
5X_H
30_H
40_H
00_H
40_H
10_H
50_H
90_H
60_H
YY_H
80_H
YY_H
90_H
YY_H
A0_H
YY_H
B0_H
YY_H
08_H
YY_H
Description
Read EEPROM command via SIG™ pin.^†
DAC Ramp Test Mode. Gain_B[13:3] contains the starting point, and the increment is
(Offset_B/8). The increment will be added every 125µsec.
Trim/Configure: 3^rd nibble determines what is trimmed/configured. The 4^th nibble is data to be
programmed.
3^rd Nibble
4^th Nibble
Description
0_H
Data
Trim oscillator. Least significant 3 bits of data used.
1_H
Data
Trim 1V reference. Least significant 4 bits of data used.
2_H
Data
Offset Mode. Least significant 4 bits of data used.
3_H
Data
Set output mode. Least significant 2 bits used.
4_H
Data
Set update rate. Least significant 2 bits used.
5_H
Data
Configure JFET regulation
7_H
Data
Program EEPROM bits [99:96] (Pamp_Gain)
D_H
Program EEPROM bits [105:103]:
3_H or 6_H
EEPROM locked! All others: EEPROM unlocked.
E_H
Data
Program EEPROM bits [102:100] diag_cfg ^‡
Start NOM => Ends Command Mode; transition to Normal Operation Mode.
Start_RM = Start the Raw Mode (RM)
In this mode, if Gain_B = 800H, then the digital output will simply be the raw values of the ADC
for the Bridge reading.
Start_CM => Start the Command Mode; used to enter Command Interpret Mode.
Program SOT (2^nd Order Term)
Program Gain_B upper 7-bits (Set the MSB to 0.)
Program Gain_B lower 8-bits
Program Offset_B upper 6-bits (Set the two MSBs to 0.)
Program Offset_B lower 8-bits
Program Upper Clipping Limit (Set the MSB to 0.)
† _{For more details, refer to section 3.7.}
‡ _{For more details, refer to section 3.5.}
Data Sheet
June 14, 2011
© 2011 Zentrum Mikroelektronik Dresden AG — Rev. 1.11
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without
the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice.
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