Revision 5.03 – June 14, 2006
S5320 – PCI Match Maker: Electrical Characteristics
Data Sheet
Table 8. Mailbox Timings
Functional Operation Range (V = 3.3V ± 5%, 0°C to 70°C, 50 pF load on outputs)
CC
Symbol
Parameter
Min
Max
Units
Notes
t
t
t
t
t
t
4
-
ns
LOAD# Setup to ADCLK Rising Edge
LOAD# Hold from ADCLK Rising Edge
MD[7:0] Setup to ADCLK Rising Edge
MD[7:0] Hold from ADCLK Rising Edge
MD[7:0] Float from LOAD# Low
60
61
62
63
64
65
1
2.6
1
-
-
ns
ns
ns
ns
ns
1,2
1,2
2
-
-
14.9
17
-
2,3
MD[7:0] Active from ADCLK Rising Edge
Notes:
1. Applies only when external mailbox is in input mode (MDMODE = 1).
2. Applies only when external mailbox is in input/output mode (MDMODE = 0).
3. When the S5320 is driving MD[7:0] w/ Add-On incoming mailbox byte 3, the PCI can update this output synchronously to the PCI clock. As a
result, once driving, this output is asynchronous to ADCLK.
Figure 9. Mailbox Data (Setup/Hold timing)
ADCLK
t61
LOAD#
t60
t63
MD[7:0]
t62
Figure 10. Mailbox Data (Float/Active timing)
ADCLK
t60
t61
LOAD#
MD[7:0]
t64
t62
t65
5320
Driv ing
5320
Driving
Add-On Driving
t63
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