cy2275a Cypress Semiconductor Corporation., cy2275a Datasheet - Page 7

• Manufacturer Part Number: cy2275a
• Description: Pentium Clock Synthesizer/driver Desktop With Intel 82440lx With Dimms
• Manufacturer: Cypress Semiconductor Corporation.

Timing Requirement for the I
Switching Waveforms
Duty Cycle Timing
CPUCLK Outputs HIGH/LOW Time
All Outputs Rise/Fall Time
CPU-CPU Clock Skew
t
t
t
t
t
t
t
t
t
t
t
10
11
12
13
14
15
16
17
18
19
20
Parameter
OUTPUT
OUTPUT
CPUCLK
CPUCLK
t
t
2
3
SCLK Clock Frequency
Time the bus must be free before a new transmission can start
Hold time start condition. After this period the first clock pulse is generated.
The LOW period of the clock.
The HIGH period of the clock.
Setup time for start condition. (Only relevant for a repeated start condition.)
Hold time DATA
DATA input set-up time
Rise time of both SDATA and SCLK inputs
Fall time of both SDATA and SCLK inputs
Set-up time for stop condition
for CBUS compatible masters.
for I
2
C devices
t
1C
t
1A
t
5
t
1B
2
C Bus
t
t
t
2
4
1D
Description
7
V
0V
V
0V
DD
DD
Min.
250
4.7
4.7
4.0
4.7
4
4
0
5
0
Max.
100
300
1
CY2275A
Unit
kHz
ns
ns
s
s
s
s
s
s
s
s