Table 9-18. Access.bus Input Timing Parameters; Table 9-19. Access.bus Output Timing Parameters - AMD Geode SC1200 Data Book

Electrical Specifications
9.3.5 ACCESS.bus Interface
The following tables describe the timing for the ACCESS.bus signals.
Notes: 1) All ACCESS.bus timing is not 100% tested.
2) In this table tCLK = 1/24MHz = 41.7 ns.
Symbol Parameter
t Bus free time between
BUFi
Stop and Start condition
t AB1C/AB2C setup time
CSTOsi
t AB1C/AB2C hold time
CSTRhi
t AB1C/AB2C setup time
CSTRsi
t Data high setup time
DHCsi
t Data low setup time
DLCsi
t AB1D/AB2D fall time
SCLfi
t AB1D/AB2D rise time
SCLri
t AB1C/AB2C low time
SCLlowi
t AB1C/AB2C high time
SCLhighi
t AB1D/AB2D fall time
SDAfi
t AB1D/AB2D rise time
SDAri
t AB1D/AB2D hold time
SDAhi
t AB1D/AB2D setup time
SDAsi
Symbol Parameter
t AB1C/AB2C high time
SCLhigho
t AB1C/AB2C low time
SCLlowo
t Bus free time between
BUFo
Stop and Start condition
t AB1C/AB2C setup time
CSTOso
t AB1C/AB2C hold time
CSTRho
t AB1C/AB2C setup time
CSTRso
t Data high setup time
DHCso
t Data low setup time
DLCso
t AB1D/AB2D signal fall
SCLfo
time
t AB1D/AB2D signal rise
SCLro
time
AMD Geode™ SC1200/SC1201 Processor Data Book

Table 9-18. ACCESS.bus Input Timing Parameters

Min
t
SCLhigho
8 t - t
* CLK SCLri
8 t - t
* CLK SCLri
8 t - t
* CLK SCLri
2 t
* CLK
2 t
* CLK
16 t
* CLK
16 t
* CLK
0
2 t
* CLK

Table 9-19. ACCESS.bus Output Timing Parameters

Min
- 1 μs
K t
* CLK
- 1 μs
K t
* CLK
t
SCLhigho
t
SCLhigho
t
SCLhigho
t
SCLhigho
t - t
SCLhigho SDAro
t - t
SCLhigho SDAfo
32579B
Max Unit Comments
Before Stop condition
After Start condition
Before Start condition
Before AB1C/AB2C rising edge
Before AB1C/AB2C rising edge
300 ns
μs
1
After AB1C/AB2C falling edge
After AB1C/AB2C rising edge
300 ns
μs
1
After AB1C/AB2C falling edge
Before AB1C/AB2C rising edge
Max Unit Comments
After AB1C/AB2C rising edge,
Note 1
After AB1C/AB2C falling edge
μs
1 Note 2
μs
1 Before Stop condition, Note 2
μs
1 After Start condition, Note 2
μs
1 Before Start condition, Note 2
μs
1 Before AB1C/AB2C rising
edge, Note 2
μs
1 Before AB1C/AB2C rising
edge, Note 2
300 ns
μs
1
385