Motorola 8900 User Manual - Page 38

Turning the C24 Off Using IGN, ON_N Power Off Timing

Get Motorola 8900 - Blackberry Curve Cell Phone OEM Car Charger PDF manuals and user guides
UPC - 845374028836
View all Motorola 8900 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 38 highlights

Power On/Off Operation Figure 2-4 illustrates the power-off timings when using the ON_N signal. Figure 2-4: ON_N Power Off Timing Turning the C24 Off Using IGN The IGN signal may be used to power off C24 only if it was also used to power it on. When the IGN signal is set low, C24 will turn off. This will initiate a normal power-off process, which includes disabling of all applications interfaces (UART, audio, etc.) and closing the network connection. The IGN signal will not power off C24 before 30 seconds have elapsed since C24 was powered-on. This delay mechanism is implemented to protect C24 from unexpected transients on the IGN line during power up. Figure 2-5 illustrates the power-off timings when using the IGN signal. Figure 2-5: IGN Power Off Timing 14 C24 Module Hardware Description December 15, 2008

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
Power On/Off Operation
14
C24 Module Hardware Description
December 15, 2008
Figure 2-4
illustrates the power-off timings when using the ON_N signal.
Figure 2-4: ON_N Power Off Timing
Turning the C24 Off Using IGN
The IGN signal may be used to power off C24 only if it was also used to power it on. When the
IGN signal is set low, C24 will turn off. This will initiate a normal power-off process, which
includes disabling of all applications interfaces (UART, audio, etc.) and closing the network
connection.
The IGN signal will not power off C24 before 30 seconds have elapsed since C24 was
powered-on. This delay mechanism is implemented to protect C24 from unexpected transients on
the IGN line during power up.
Figure 2-5
illustrates the power-off timings when using the IGN signal.
Figure 2-5: IGN Power Off Timing