參數(shù)資料
型號： TMS37122
廠商： Texas Instruments, Inc.
英文描述： TIRIS Automotive Devices Analog Front End IC TMS37122
中文描述： 提里斯汽車設(shè)備的模擬前端集成電路TMS37122
文件頁數(shù)： 30/73頁
文件大?。?/td> 1189K
代理商： TMS37122
30
Analog Front End IC TMS37122 - Reference Guide
August ’01
or Passive Start Wake Pattern is received.
Figure 16: Wake Pattern Detection State Diagram
2.8.4.2
Transparent Mode
If the Wake Pattern A (Passive Entry) is detected, the circuit switches to Transparent Mode
(see Figure 16). In Transparent Mode the WAKE output is set, the internal signals CLKI and
EOBI are now available at the relating outputs (CLKA/M, EOBA). The watchdog for CLKI
is disabled, which means that the external Microcomputer has to take over the supervision and
Off-Mode
(Iquiet)
VRF>VWAKEA
for tWdly
(No_Wake Flag=0)
No modulation
during tWAIT
CLKI = ON
EOBI = ON
DEMOD = ON
Wait max.
for tWAIT
(Iact)
1st. EOBI detected
No valid or complete
WAKE PATTERN
during tWRX
Standby-
Mode
VWAKEA=ON
(Istby)
Receive
Wake Pattern
for max tWRX,
Check
Wake Pattern
(Iact)
EOBI = OFF,
Wait for
tTELEGR
(Iinit)
VRF
<
VWAKEA
WDEEN
= LOW
WDEEN
= LOW
TX = LOW and
WDEEN = HIGH
3DSTAT3A1.CW
CLKI missed
for twdg
tTELEGR
exceeded
CLKI
missed
for
twdg
CLKI =
OFF
CLKI missed
for twdg
CLKI missed
for twdg
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