BDP-94HD
26
1
2
4
1
2
3
4
C
D
F
A
B
E
1.Reset specification
[On start-up]
Receiving Power ON key, sub-microcomputer turns Power_ON signal to ”H”.
Receiving Power ON signal, power turns each SW power to ”ON”.
V+3D turns ON, then ResetG# to ”L” by ResetIC.
Sub-microcomputer turns H,I,J to ”L” by ResetG#”L”and Reset#,Reset2#,Reset3# to ”L”.
ResetG# is ”L”
⇒
(after 200ms) to ”H” *IC3901 BD45282 operation.
Sub-microcomputer receives ResetG#”H”, then turns H,I,J to ”H”.
H,I,J transit to ”H”, then Reset#,Reset2#,Reset3#”L” turn to ”H”.
Power_ON
V+3D
ResetG#
Reset#,2#3#
[At normal end]
Sub-microcomputer detects the pushing of Power key, then notifies PowerOFF to SMP8634 by I2C.
Receiving PowerOFF notification, SMP8634 conducts end processing.
SMP8634 instructs PowerOFF to sub-microcomputer by I2C.
Sub-microcomputer turns H,I,J to ”L”, and after 50msec, PowerON signal to ”L”.
By turning H,I,J to ”L”, Reset#,Reset2#,Reset3# ”H” turn to ”L”.
After 50msec, power turns each SW power to OFF.
H,I,J
Reset#,2#3#
Power_ON
[Power abnormality]
*Reset operation in the case of 1.2V or 3.3V drop.
Determine if ResetG becomes ”L”, then turn Reset# - Reset2# to L, and after 200ms to ”H”.
V+3D,V+1R2D
ResetG#
Reset#,2#3#
By turning V+5E to OFF, RES# turns to ”L”. Sub-microcomputer stops.
By turning V+1R2D and V+3D to OFF, ResetG# turns to ”L” by ResetIC.
By RES# sub-microcomputer stops and Reset output is in the ”PullDown”, turns immediately to ”L” .
V+1R2D
ResetG#
Reset#,2#3#
PON key
200ms
SMP8634 is recommended to unlock RST after 200ms from V+3D startup.
completion notice of I2C
SMP8634 end processing
50ms
200ms
in case of V+1R2D : 0.75ms
in case of V+3D : 200ms
in each case, if FallEdge is detected, turn to
200ms ”L”hold. (required reset time for SMP8634)
discharge by capacity
By RES# sub-microcomputer stops and Reset
output is in the ”ZPullDown”, turns immediately to ”L”.
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
