CMX868 View Datasheet(PDF) - CML Microcircuits
Part Name
Description
MFG CO.
'CMX868' PDF : 48 Pages View PDF
Low Power V.22 bis Modem
CMX868
C-BUS Timings (See Figure 15)
tCSE
CSN-Enable to Clock-High time
tCSH
Last Clock-High to CSN-High time
tLOZ
Clock-Low to Reply Output enable
time
tHIZ
CSN-High to Reply Output 3-state
time
tCSOFF
tNXT
tCK
tCH
tCL
tCDS
tCDH
tRDS
tRDH
CSN-High Time between transactions
Inter-Byte Time
Clock-Cycle time
Serial Clock-High time
Serial Clock-Low time
Command Data Set-Up time
Command Data Hold time
Reply Data Set-Up time
Reply Data Hold time
Notes
Min.
100
100
0.0
–
1.0
200
200
100
100
75.0
25.0
50.0
0.0
Typ.
–
–
–
–
–
–
–
–
–
–
–
–
–
Max.
–
–
–
1.0
–
–
–
–
–
–
–
–
–
Maximum 30pF load on each C-BUS interface line.
Note: These timings are for the latest version of the C-BUS as embodied in the CMX868.
Units
ns
ns
ns
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
Figure 15 C-BUS Timing
© 2004 CML Microsystems Plc
46
D/868/9
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