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NS32FX100-15 Datasheet, PDF (65/94 Pages) National Semiconductor (TI) – System Controller
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4 0 Device Specifications (Continued)
4 2 OUTPUT SIGNAL LEVELS
The following tables show the levels of the NS32FX100 output control signals during reset or power save mode
4 2 1 Freeze Mode Output Signals
Output signals are driven during Freeze mode (states S3
S4 S5) as follows
Name
Output Level
S3 S4 S5
Special
Features
CWAIT
HOLD
MA1 – 15
WE0 – 1
OE
SEL0
SEL1
SEL3
RAS0 – 1
CAS
SMPH0 – 3
PMPH0 – 3
PORT-B
PDO
BUZCLK
WDT
INTR
PEXT
CCLK
AD0 – 15
A16 – 23
ADS
DDIN
PORT-C
SDOUT
SDFDBK
SOSCO
FOSCO
TRI-STATE
TRI-STATE
Drive Low
TRI-STATE
TRI-STATE
TRI-STATE
TRI-STATE
TRI-STATE
Toggle drive low
Toggle drive low
TRI-STATE
TRI-STATE
T S according PBEN bit
TRI-STATE
TRI-STATE
TRI-STATE
TRI-STATE
TRI-STATE
Drive Low
TRI-STATE
TRI-STATE
TRI-STATE
TRI-STATE
T S according PCENx
Drive Low
Drive Low
Toggles
Drive High
VOL k 0 2V
2 Source T S
CMOS
CMOS
When MA1–15 CAS RAS0 and RAS1 are driven low their voltages
are below GND a 0 2V if less than 0 1 mA is driven
When refresh is enabled these signals are toggled When refresh is
disabled these signals are driven low
When entering Freeze mode from full frequency
MCFG e H’80
4 2 2 Reset Power Restore Output Signals
During state S6 of the Power Save mode output signals are
driven or floated either when reset is active or throughout
the S6 state Output signals are driven during S6 as follows
Name
Output Level
S6
Special
Features
CWAIT
HOLD
MA1 – 15
WE0 – 1
OE
SEL0
SEL1
SEL3
RAS0 – 1
CAS
SMPH0 – 3
PMPH0 – 3
PORT-B
PDO
BUZCLK
WDT
INTR
PEXT
CCLK
AD0 – 15
A16 – 23
ADS
DDIN
PORT-C
SDOUT
SDFDBK
FOSCO
SOSCO
Drive High
Drive High
Drive Low
Drive High
Drive High
Drive High
Drive High
Drive High
Toggle refresh
Toggle refresh
Drive Low
Drive Low
TRI-STATE
Undefined
Drive Low
Drive Low
Drive High
Drive High
Toggles
TRI-STATE
TRI-STATE
TRI-STATE
TRI-STATE
TRI-STATE
Drive
Drive
Toggles
Toggles
VOL k 0 2V
CMOS Level
2 Source T S
CMOS
CMOS
When RST is active and PFAIL is non-active (PFAIL e 1 RST e 0)
When MA1–15 CAS RAS0 and RAS1 are driven low their voltages are
below GND a 0 2V if less than 0 1 mA is driven
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