SLUS530D − SEPTEMBER 2002 − REVISED SEPTEMBER 2003
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15
FUNCTIONAL DESCRIPTION
TIMER FAULT RECOVERY
As shown in Figure 5, bqTINY provides a recovery method to deal with timer fault conditions. The following conditions
summarize this method.
Condition #1: Charge voltage above recharge threshold (V
(RCH)
) and timeout fault occurs
Recovery method: bqTINY waits for the battery voltage to fall below the recharge threshold. This could happen as
a result of a load on the battery, self-discharge or battery removal. Once the battery falls below the recharge threshold,
the bqTINY clears the fault and enters the battery absent detection routine. A POR or CE toggle also clears the fault.
Condition #2: Charge voltage below recharge threshold (V
(RCH)
) and timeout fault occurs
Recovery method: Under this scenario, the bqTINY applies the I
(FAULT)
current. This small current is used to detect
a battery removal condition and remains on as long as the battery voltage stays below the recharge threshold. If the
battery voltage goes above the recharge threshold, then the bqTINY disables the I
(FAULT)
current and executes the
recovery method described for condition #1. Once the battery falls below the recharge threshold, the bqTINY clears
the fault and enters the battery absent detection routine. A POR or CE toggle also clears the fault.
Summary of Contents for PV420S
Page 1: ...SERVICE MANUAL PV420S WWW BBK RU ...
Page 72: ... 69 CXD3068Q Block Diagram ...
Page 73: ... 70 CXD3068Q Pin Configuration ...
Page 122: ... 119 CXD3068Q Timing Chart 1 3 ...
Page 123: ... 120 CXD3068Q Timing Chart 1 4 ...
Page 124: ... 121 CXD3068Q Timing Chart 1 5 ...
Page 129: ... 126 CXD3068Q Timing Chart 2 1 ...
Page 130: ... 127 CXD3068Q Block Diagram 2 2 ...
Page 131: ... 128 CXD3068Q Timing Chart 2 3 ...
Page 134: ... 131 CXD3068Q Timing Chart 2 6 ...
Page 138: ... 135 CXD3068Q VCO C Mode Fig 3 3 Access Flow Chart Using VCO Control ...
Page 140: ... 137 CXD3068Q Block Diagram 4 1 ...
Page 143: ... 140 CXD3068Q Timing Chart 4 4 ...
Page 147: ... 144 CXD3068Q Fig 4 6 a Auto Focus Flow Chart Fig 4 6 b Auto Focus Timing Chart ...
Page 148: ... 145 CXD3068Q Fig 4 7 a 1 Track Jump Flow Chart Fig 4 7 b 1 Track Jump Timing Chart ...
Page 149: ... 146 CXD3068Q Fig 4 8 a 10 Track Jump Flow Chart Fig 4 8 b 10 Track Jump Timing Chart ...
Page 150: ... 147 CXD3068Q Fig 4 9 a 2N Track Jump Flow Chart Fig 4 9 b 2N Track Jump Timing Chart ...
Page 151: ... 148 CXD3068Q Fig 4 10 a Fine Search Flow Chart Fig 4 10 b Fine Search Timing Chart ...
Page 152: ... 149 CXD3068Q Fig 4 11 a M Track Move Flow Chart Fig 4 11 b M Track Move Timing Chart ...
Page 157: ... 154 CXD3068Q Fig 4 15 CD TEXT Data Timing Chart ...
Page 162: ... 159 CXD3068Q Fig 5 3a Fig 5 3b ...
Page 196: ... 193 CXD3068Q Description of Data Readout ...
Page 200: ... 197 CXD3068Q ...
Page 201: ... 198 CXD3068Q ...
Page 202: ... 199 CXD3068Q ...
Page 207: ... 204 CXD3068Q Package Outline Unit mm ...
Page 208: ...This data sheet has been made from recycled paper to help protect the environment 205 ...
