FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
No Operation Command
Sending these two commands perform no operation. The device outputs will remain in previous state.
.
Table 23. No Operation Command
Command
Control Address
Command Bits
15
1
14
1
13
1
12
1
11
1
10
X
9
X
X
8
X
X
7
X
X
6
5
X
X
4
3
X
X
2
X
X
1
X
X
0
X
X
NO Operation
X
X
X
X
NO Operation
0
0
0
0
0
X
Next SO Response
(Message 1)
0 = No Fault, 1 = Fault
OvrVl Reset Fault Fault Fault Fault Fault Fault Fault Fault Fault Fault Fault Fault Fault Fault
t,TLi
m or
CAL
Flt
Statu Statu Statu Statu Statu Statu Statu Statu Statu Statu Statu Statu Statu Statu
sPW sPW sPW sPW sPW sPW sOUT sOUT sOUT sOUT sOUT sOUT sOUT sOUT
M6
M5
M4
M3
M2
M1
8
7
6
5
4
3
2
1
Command Register Definition:
FAULT OPERATION
0 = Output Command Off
1 = Output Command On
On each SPI communication, a 16-bit command word is
sent to the 33800 and a 16-bit status word is received from
the 33800.
SO Definition:
0 = No fault
1 = Fault
The Most Significant Bit (MSB) is sent and received first.
Table 24. Fault Operation
Serial Output (SO) Pin Reports
Over-current
SO Pin reports short-to-battery/supply or over-current condition.
Output ON Open Load Fault
Output OFF Open Load Fault
Not reported on GDX and OUTX outputs. Reported on CCD1 and CCD2 outputs
SO Pin reports output “OFF” open load condition.
Device Shutdowns
Over-voltage
Total device shutdown at V
= 36.5 to 44V. Resumes normal operation with proper voltage. Upon
PWR
recovery all outputs assume previous state or OFF based on the over-voltage bit in the Shutdown/Retry
Control register.
Over-current
OUTX & CCDX outputs will remain in current limit until tSC limit is reached. With TLim enabled, OUTX &
CCDX outputs will remain in current limit until TLim is reached.
SPI Command Summary
Table 25 below provides a comprehensive list of SPI
commands recognized by device 33800 and the reset state
of each register.
Table 25. SPI Commands
Command Name
Control Address
Command Bits
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
MISCELLANEOUS
Common Commands
Calibration Command
1
1
0
1
0
X
X
X
X
X
X
X
X
X
X
X
33800
Analog Integrated Circuit Device Data
Freescale Semiconductor
31
FREESCALE [ Freescale ]
