EM4170
Communication from the Transceiver to the Transponder
Bit Period
DATA :
"1"
"0"
"0"
"1"
"0"
"1"
Transceiver
Coil
Transponder
Coil
Periods of RF field :
16
16
16
16
*
Modulation induced by the Transceiver
Recommended : 4 periods
*
Minimum
: 1 period
Modulation induced by the Transponder
Fig. 17
Pad Assignment
Pad Location
Pin
1
Name
Description
COIL1
Coil connection
2
VPOS
Unregulated positive supply
Positive supply
3
VDD
4
TEST_OUT
TEST
Test pad output
5
Test pad with pull down
Test pad with pull down
Negative supply
6
TEST_CLK
VSS
7
8
COIL2
coil connection
Fig. 18
12
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