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AS8222 Datasheet(PDF) 31 Page - ams AG

Part # AS8222
Description  Enhanced FlexRay Standard Transceiver
PDF  43 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS8222 Datasheet(HTML) 31 Page - ams AG

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AS8222
Datasheet - B u s D r i v e r
www.ams.com/eng/FlexRay/AS8222
Revision 1.0
30 - 42
8 Bus Driver
8.1 AS8222 Bus States
Activity:Differential bus signals as shown in chapter 10.3 Transmitter and 10.4 Receiver applies.
Idle:The bus wires are terminated to VCC / 2 through the receiver input resistances.
Idle_LP:The bus wires are terminated to GND through the receiver input resistances.
Idle_HZ:The bus wires are not terminated. The input resistances are about 1 M Ω.
8.2 Transceiver Timing
Figure 7. Bus Driver Timing Diagram
TxD
BGE
TxEN
VBUS
RxD
RxEN
0.5 * VIO
300 mV
30 mV
80 %
20 %
tTxEN_BUS_Active_Idle
tTxEN_BUS_Idle_Active
tBGE_BUS_Active_Idle
tBGE_BUS_Idle_Active
tTxD_BUS01
tTxD_BUS10
tBUS_RxD01
tBUS_RxD10
tBUSIdleReaction tBUSActivityReaction
tBUS01
tBUS10
30 mV
-300 mV
-300 mV
-300 mV
tBUS_Idle_Active
tBUS_Active_Idle
0.5 * VIO
0.5 * VIO
0.5 * VIO
0.5 * VIO



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