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AS8222 데이터시트(PDF) 24 Page - ams AG

부품명 AS8222
상세설명  Enhanced FlexRay Standard Transceiver
PDF  43 Pages
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제조업체  AMSCO [ams AG]
홈페이지  http://www.ams.com
Logo AMSCO - ams AG

AS8222 데이터시트(HTML) 24 Page - ams AG

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AS8222
Datasheet - Detailed Descr i p ti on
www.ams.com/eng/FlexRay/AS8222
Revision 1.0
23 - 42
7.9 System Description
Figure 5. State Machine Diagram
Notes:
1. This state diagram does not include all transitions, which are shown in Table 19.
2. Prefix of “WHILE” is an event and suffix in brackets checks the flags or in case of EN and STBN the input condition.
- For example: VREC_VBAT WHILE (EN=0 AND STBN=0)
- After the event VBAT supply voltage recovery is detected, the transition is performed if EN and STBN are “low”.
UV_VBAT:Undervoltage event and/or flag for VBAT supply voltage
UV_VIO:Undervoltage event and/or flag for VIO supply voltage
UV_VCC:Undervoltage event and/or flag for VCC supply voltage
VREC_VBAT:Voltage recovery event and/or flag for VBAT supply
voltage
WAKE:Wake event and/or flag
VREC_VIO:Voltage recovery event and/or flag for VIO supply voltage
VREC_VCC:Voltage recovery event and/or flag for VCC supply
voltage
Reset_Wake:Wake flag is set to low
Reset_UV_VCC:Undervoltage flag VCC is set to low
EN
=1
AN
D S
TB
N=0
EN=
0 A
ND
STB
N=1
POWER-OFF
RECEIVE-ONLY
STANDBY
SLEEP
EN=0 WHILE (STBN=1)
EN=1 WHILE (STBN=1)
EN=0 AND STBN=0
OR
UV_VCC
UV_VBAT THEN (RESET_WAKE)
OR
UV_VIO THEN (RESET_WAKE)
From any State (except
Power Off)
EN=0 WHILE (STBN=0)
OR
UV_VCC
EN=1 WHILE (STBN=0)
OR
WAKE WHILE (EN=1 AND STBN=0)
OR
VREC_VCC WHILE (EN=1 AND STBN=0)
Timer = tSLEEP
WA
KE
WH
ILE
(EN
=0
AN
D S
TB
N=
0)
OR
VR
EC
_V
BA
T
WH
ILE
(EN
=0
AN
D S
TB
N=
0)
OR
VR
EC
_V
IO
WH
ILE
(EN
=0
AN
D S
TB
N=
0)
OR
VR
EC
_V
IO
WH
ILE
(UV
_V
CC
)
STBN=1 WHILE (EN=0)
OR
WAKE WHILE (EN=0 AND STBN=1)
OR
VREC_VBAT WHILE (EN=0 AND STBN=1)
OR
VREC_VIO WHILE (EN=0 AND STBN=1)
Input:
EN = 0
STBN = 1
Output:
INH1 = 1
INH2 = 1
Input:
EN = x
STBN = 0
Output:
INH1 = float
INH2 = float
UV_VBAT WHILE (UV_VCC)
OR
UV_Vcc WHILE (UV_VBAT)
WAKE WHILE (EN=0 AND STBN=0)
OR
UV_VCC WHILE (EN=0 AND STBN=0)
OR
VREC_VCC WHILE (EN=0 AND STBN=0)
OR
WHILE (UV_VCC)
(EN=0 OR EN=1)
OR
(STBN=1 OR STBN=0) WHILE (UV_V
BAT
OR UV_VIO)
OR
UV_VBAT OR UV_VIO OR UV_V
CC
OR
VREC_VCC
NORMAL
Input:
EN = 1
STBN = 1
Output:
INH1 = 1
INH2 = 1
GO-TO-SLEEP
Input:
EN = 1
STBN = 0
Output:
INH1 = 1
INH2 = float
Input:
EN = 0
STBN = 0
Output:
INH1 = 1
INH2 = float
EN=
1 AN
D ST
BN=
1
OR
WAK
E
WH
ILE
(EN=
1 AN
D ST
BN=
1) TH
EN
(Res
et_U
V_V
CC)
OR
V
REC_V
CC W
HILE
(EN=
1 AN
D ST
BN=
1)



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