cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 116

• Manufacturer Part Number: cs5535
• Description: Geode Cs5535 Companion Multi-function South Bridge
• Manufacturer: National Semiconductor Corporation

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SMB Controller Functional Description
F
T
T
T
T
T
T
T
T
T
T
T
T
T
TPOR
V
V
V
I
I
V
I
C
C
V
LEAK_BUS
LEAK_PIN
PULLUP
BUF
HD
SU
SU
HD
SU
Timeout
LOW
HIGH
LOW
LOW
F
R
IL
IH
OL
DD
NOISE
BUS
I
Symbol
:STA
:STO
:DAT
:STA
:DAT
:SEXT
:MEXT
Parameter
Hold time after (repeated)
Data hold time
Cumulative clock low extend
Time that device must be opera-
Operating frequency
Bus free time between STOP
and START condition
START condition. After this
period the first clock is generated
Repeated START condition setup
time
STOP condition setup time
Data setup time
Detect clock low time-out
Clock low period
Clock high period
Cumulative clock low extend
period (slave)
period (master)
Clock/data fall time
Clock/data rise time
tional after power-on reset
SMBus signal input low voltage
SMBus signal input high voltage
SMBus signal output low voltage
Input leakage per bus segment
Input leakage per device pin
Nominal bus voltage
Current sinking, V
(SMBus)
Capacitive load per bus segment
Capacitance for SMBDAT or
SMBCLK pin
Signal noise immunity from 10 to
100 MHz
Table 4-17. Comparison of SMB, I
OL
= 0.4V
300 mV
10 kHz
4.0 mA
300 ns
250 ns
4.7 µs
4.7 µs
4.0 µs
25 ms
4.7 µs
4.0 µs
4.0 µs
2.1V
2.7V
Min
p-p
(Continued)
116
SMB
+-200uA
100 kHz
1000 ns
+-10 µA
500 ms
400 pF
300 ns
35 ms
25 ms
10 ms
10 pF
50 µs
0.8V
VDD
0.4V
5.5V
Max
2
C, and ACCESS.bus
250 ns
-10 µA
4.7 µs
4.0 µs
4.7 µs
4.0 µs
0 kHz
4.7us
4.0us
-0.5V
3.0V
0 µs
Min
0V
I
2
C
100 kHz
1000 ns
3.45 µs
+10 µA
300 ns
10 pF
Max
1.5V
0.4V
10 kHz
100 µA
300 ns
250 ns
4.7 µs
4.0 µs
4.7 µs
4.0 µs
25 ms
4.7 µs
4.0 µs
-0.5V
1.4V
2.0V
Min
0V
ACCESS.bus
100 kHz
1000 ns
350 µA
300 ns
35 ms
25 ms
10 ms
10 µA
50 µs
Revision 0.8
0.6V
5.5V
0.4V
5.0V
Max