ICS9LPR501 Datasheet, PDF (20/22 Pages) Integrated Circuit Systems – 64-pin CK505 w/Fully Integrated Voltage Regulator

Integrated
Circuit
Systems, Inc.
ICS9LPR501
Test Clarification Table
Comments
Power-up w/ TEST_SEL = 1 to enter test mode
Cycle power to disable test mode
FSLC./TEST_SEL -->3-level latched input
If power-up w/ V>2.0V then use TEST_SEL
If power-up w/ V<2.0V then use FSLC
FSLB/TEST_MODE -->low Vth input
TEST_MODE is a real time input
If TEST_SEL HW pin is 0 during power-up,
test mode can be invoked through B9b3.
If test mode is invoked by B9b3, only B9b4
is used to select HI-Z or REF/N
FSLB/TEST_Mode pin is not used.
Cycle power to disable test mode, one shot control
HW
SW
FSLB/
FSLC/ TEST_MOD TEST REF/N or
TEST_SEL
E
ENTRY BIT HI-Z
HW PIN
HW PIN
B9b3
B9b4
<2.0V
X
0
0
>2.0V
0
X
0
>2.0V
0
X
1
>2.0V
1
X
0
OUTPUT
NORMAL
HI-Z
REF/N
REF/N
>2.0V
1
X
1
REF/N
<2.0V
X
1
0
HI-Z
<2.0V
X
1
1
REF/N
B9b3: 1= ENTER TEST MODE, Default = 0 (NORMAL OPERATION)
B9b4: 1= REF/N, Default = 0 (HI-Z)
1118F—11/06/07
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