33784 Datasheet, PDF (25/30 Pages) Freescale Semiconductor, Inc – DSI 2.02 Sensor Interface

COMMAND SUMMARY
Refer to Table 10 for a summary of the commands
available in the 33784. The responses to these commands
FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
are summarized in Table 11, page 26, and Table 12,
page 27. The four-bit CRC, which appended to the end of
every command and every response, has been committed.
Table 10. Command Summary
Command Names
Data (LW & ELW only)
Address
Command
Hex Description
D7
D6
D5
D4
D3
D2
D1
D0 A3 A2 A1 A0 C3 C2 C1 C0
0 Initialization
– BSH BSL OD PA3 PA2 PA1 PA0 A3 A2 A1 A0 0 0 0 0
1 Request Status
–
–
–
–
–
–
–
– A3 A2 A1 A0 0 0 0 1
2 Request AN0
–
–
–
–
–
–
–
– A3 A2 A1 A0 0 0 1 0
3 I/O Control
Request ID
4 _Information
5 Request AN1
–
L2
L1
L0
– DR2 DR1 DR0 A3 A2 A1 A0 0 0 1 1
–
–
–
–
–
–
–
– A3 A2 A1 A0 0 1 0 0
–
–
–
–
–
–
–
– A3 A2 A1 A0 0 1 0 1
6 Reserved
–
–
–
–
–
–
–
– A3 A2 A1 A0 0 1 1 0
7 Clear
–
–
–
–
–
–
–
– A3 A2 A1 A0 0 1 1 1
8 Reserved
–
–
–
–
–
–
–
– A3 A2 A1 A0 1 0 0 0
9 Reserved
–
–
–
–
–
–
–
– A3 A2 A1 A0 1 0 0 1
A Format Control R/W ADDR2 ADDR1 ADDR0 DATA3 DATA2 DATA1 DATA0 A3 A2 A1 A0 1 0 1 0
B Reserved
C Reserved
D Reserved
E Reserved for test
F Reserved
–
-
–
–
-
Legend
BSH = Controls closing of the High Side Bus Switch (1 = close).
BSL = Controls closing of the Low Side Bus Switch (1 = close).
DR [2:0] = Direction of I /O. 1 = Output.
L [2:0] = Level to output on I /O if configured as outputs.
“–” = Don’t care bit. Can be 0 or 1.
-
-
-
--------
PA [3:0] = Bus Address to set the device to.
R/W = Controls if this is a read or write. Write = 1.
ADDR[2:0] = Pointer to Format Control Register that is to be accessed.
DATA[3:0] = Data to read from or write to in the pointed to Format Control
Register.
OD = Oscillator dither:
0 = no dither (default)
1 = dither
Analog Integrated Circuit Device Data
Freescale Semiconductor
33784
25