33793 Datasheet, PDF (14/27 Pages) Freescale Semiconductor, Inc – Distributed System Interface (DSI) Sensor Interface

FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
LONG- AND SHORT-WORD RESPONSES
The device responds to Long-word commands with long-word responses and short-word commands with short-word
responses. Responses are sent during the next message following the command. A long-word response summary is found in
Table 7 and a short-word response summary is found in Table 8, page 15.
Table 7. Long-Word Response Summary
CMD
hex
Command
Description
Response
0 ^{Initialization}
A3 A2 A1 A0 0 0 0 BF NV BS G1 G0 PA3 PA2 PA1 PA0
1 Request Status
A3 A2 A1 A0 0 0 0 0 NV U LO BS IO3 IO2 IO1 IO0
2 ^{Request Value 0}
A3 A2 A1 A0 0 0 0 0 B7 B6 B5 B4 B3 B2 B1 B0
3 ^{I/O Control}
A3 A2 A1 A0 0 0 0 0 L3 L2 L1 L0 DR3 DR2 DR1 DR0
4 Request ID
A3 A2 A1 A0 0 0 0 0 V2 V1 V0 0 0
0
1
1
5 ^{Request Value 1}
A3 A2 A1 A0 0 0 0 0 B7 B6 B5 B4 B3 B2 B1 B0
6 ^{Request Value 2}
A3 A2 A1 A0 0 0 0 0 B7 B6 B5 B4 B3 B2 B1 B0
7 Clear
No Response
8 ^{Request Value 3}
A3 A2 A1 A0 0 0 0 0 B7 B6 B5 B4 B3 B2 B1 B0
9 ^{Read/Write NVM}
A3 A2 A1 A0 0 0 0 0 1 1 1 1 PA3 PA2 PA1 PA0
A ^Reserved
B Reserved
C ^{Clear Logic Out}
A3 A2 A1 A0 0 0 0 0 NV U LO BS IO3 IO2 IO1 IO0
D ^{Set Logic Out}
A3 A2 A1 A0 0 0 0 0 NV U LO BS IO3 IO2 IO1 IO0
E Reserved
F ^{Reverse Initialization} A3 A2 A1 A0 0 0 0 BF NV BS G1 G0 PA3 PA2 PA1 PA0
Legend
A[3:0] = Address bits. The slave address.
B[7:0] = 8-bit A/D value.
BF = Bus Fault
BS = Status of the Bus Switch (1 = close).
DR[3:0] = I/O direction bits (1 = Output).
G[1:0] = Group assignment (the 33793 does not use these bits).
IO[3:0] = Logic level of I/O.
L[3:0] = Level to output on I/O if configured as outputs.
LO = Logic Out level at the Logic Out pin.
NV = Allows nonvolatile address programming if set to “1”.
PA[3:0] = Bus Address to set the device to.
U = Undervoltage Flag.
V[2:0] = Version number.
33793
14
Analog Integrated Circuit Device Data
Freescale Semiconductor