#"
Rev.
0.6: W83L784AR application circuit.
VOLTAGE SENSORING CIRCUIT
-34
:
12-34
- -0
-
-
#
5-6'
-0$
#/
;;:
#
##:
-
0$
0$$4?
&-
eg:
TO PIIX4
.'.1$9
2&'9
4C$869
$ 89
:
:
#
:
#
:
.'6'
.'6'#
831$
831$#
:
869
3-$9
&
1
#
/
;
.'6'7@3
.'6'#7@3#
831$
831$#
.'.1$97@3
2&'9
869
3-$9
&
-
1$766
1$#766#
-4.
-6'
44$9
-6'#A5-6'B
-6'A-0$B
@'&
1$#.1$97@3
#
;
/
#
-$766
-$#766#
-4.
-34
5-6'
-0$
-
#;
:
SMARTFAN1 Speed Control Circuit
./-
./-
# :
#
:
:
=
;
&
'
831$
; :
PWMOUT1 is
open-drain default.
When 784 is power-down,
Fan5VCC should be turned off.
=
83.4$'
+ Signal
Power
GND
<
#
4&4
:
# #:
.'6'
;
:
SMARTFAN2 Speed Control Circuit
./-
./-
:
44$9
TEMPERATURE SENSORING CIRCUIT
1$#.1$9
-4.
:>
66&5
66&D
-$766
-4.
:>
$
:>
$ 486$3
-$#766#
Note:
1. CPUT1 is for CPU1 temperature and SMARTFAN 1
2. CPUT2 is for CPU2 temperature and SMARTFAN 2
-
&
#
:
/
:
8&$
8:
831$#
#
:
# :
PWMOUT2 is
open-drain default.
When 784 is power-down,
Fan5VCC should be turned off.
:
=#
;
&#
'
=
83.4$'
/ + Signal
Power
GND
<#
#
4&4
:
## #:
.'6'#
/
:
uP
44$9
.'.1$9
1$#.1$9
2&'9
$
6'03'&44$3'63
%
&'(
&* !"!#
+
)
,