FUNCTIONAL DEVICE OPERATION
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
FUNCTIONAL DEVICE OPERATION
The SI/SO pins of the 10XS3412 follow a first-in first-out
(D15 to D0) protocol, with both input and output words
transferring the most significant bit (MSB) first. All inputs are
compatible with 5.0 or 3.3 V CMOS logic levels.
SPI PROTOCOL DESCRIPTION
The SPI interface has a full duplex, three-wire
synchronous data transfer with four I/O lines associated with
it: Serial Input (SI), Serial Output (SO), Serial Clock (SCLK),
and Chip Select (CS).
CS
CSB
CS
SCLK
SI
D15
D14
D13
D12 D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
SO
OD15 OD14 OD13 OD12 OD11 OD10 OD9 OD8 OD7 OD6 OD5 OD4 OD3 OD2 OD1 OD0
Notes 1. RST is a logic [1] state during the above operation.
2. D15 D0 relate to the most recent ordered entry of data into the device.
:
NOTES: 1. RSTB is in a logic H state during the above operation.
3. OD15:OD0 relate to the first 16 bits of ordered fault and status data out of the device.
device.
2. DO, D1, D2, ... , and D15 relate to the most recent ordered entry of program data into the LUX IC
Figure 9. Single 16-Bit Word SPI Communication
10XS3412
Analog Integrated Circuit Device Data
Freescale Semiconductor
26
FREESCALE [ Freescale ]
