Datasheet

LowBit
(Logic0)
HighBit
(Logic1)
t
Low
t
High
t
LOW
t
High
EasyScaleTiming,withoutacknowledgeRFA =0
DA7
0
t
Start
StaticHigh
StaticHigh
DATA IN
t
Start
T
EOS
T
EOS
DA0
0
RFA
0
D0
1
AddressByte DATA Byte
EasyScaleTiming,withacknowledgeRFA =1
StaticHigh
t
ACKN
Acknowledge
true,DataLine
pulleddownby
device
DATA IN
DATA OUT
Acknowledge
false,nopull
down
Controllerneedsto
PullupDataLineviaa
resistortodetect ACKN
ACKN
DA7
0
StaticHigh
T
EOS
t
valACK
DA0
0
RFA
1
D0
1
t
Start
t
Start
AddressByte DATA Byte
TPS61160
TPS61161
SLVS791C –NOVEMBER 2007–REVISED APRIL 2012 www.ti.com
Table 2. EasyScale™ Bit Description
BIT TRANSMISSION
BYTE NAME DESCRIPTION
NUMBER DIRECTION
7 DA7 0 MSB device address
6 DA6 1
5 DA5 1
Device
4 DA4 1
Address
IN
Byte
3 DA3 0
72 hex
2 DA2 0
1 DA1 1
0 DA0 0 LSB device address
7 (MSB) RFA Request for acknowledge. If high, acknowledge is applied by device
6 A1 0 Address bit 1
5 A0 0 Address bit 0
4 D4 Data bit 4
Data byte IN
3 D3 Data bit 3
2 D2 Data bit 2
1 D1 Data bit 1
0 (LSB) D0 Data bit 0
Acknowledge condition active 0, this condition will only be applied in case RFA bit is
set. Open drain output, Line needs to be pulled high by the host with a pullup
ACK OUT
resistor. This feature can only be used if the master has an open drain output stage.
In case of a push pull output stage Acknowledge condition may not be requested!
Figure 16. EasyScale™— Bit Coding
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