© 2016 Integrated Device Technology, Inc.
S
Data Byte
S
P
Start Bit
Parity Bit of Data Byte
Data Bit (Low)
P
1 0
0
1 0
11
0
1
Data Bit (High
)
1 DATA Byte Packet
(
10-bit byte A5
H
)
0
3.2.4. ZSC31010 Read Operations
The incoming frame will be checked for proper parity on both, command and data bytes, as well as for any edge
time-outs prior to a full frame being received.
Once a command/data pair is received, the ZSC31010 will perform that command. After the command has been
successfully executed by the IC, the IC will acknowledge success by a transmission of an A5
H
-byte back to the
master. If the master does not receive an A5
H
transmission within 130 ms of issuing the command, it must
assume the command was either improperly received or could not be executed.
Figure 3.4 Read Acknowledge
The ZSC31010 transmits 10-bit bytes (1 start bit, 8 data bits, 1 parity bit). During calibration and configuration,
transmissions are normally either A5
H
or data. A5
H
indicates successful completion of a command. There are two
different digital output modes configurable (digital output with temperature, and digital output with only bridge
data). During Normal Operation Mode, if the part is configured for digital output of the bridge reading, it first
transmits the high byte of bridge data, followed by the low byte. The bridge data is 14 bits in resolution, so the
upper two bits of the high byte are always zero-padded. There is a 32 μs stop time when the bus is held high
between bytes in a packet.
Figure 3.5 Digital Output (NOM) Bridge Readings
Data Bit (example: Bit 2)
