Low Power V.32 bis Modem
CMX869
C-BUS Timings (See Figure 13)
Notes
Min.
Typ.
Max.
Units
t
t
t
t
t
t
t
t
t
t
t
t
t
CSN-Enable to Clock-High time
Last Clock-High to CSN-High time
Clock-Low to Reply Output enable time
CSN-High to Reply Output 3-state time
CSN-High Time between transactions
Inter-Byte Time
100
-
-
ns
CSE
CSH
LOZ
HIZ
100
0.0
-
-
-
-
-
-
-
-
-
-
-
-
-
ns
ns
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
-
-
1.0
1.0
-
-
-
-
-
-
-
-
-
CSOFF
NXT
CK
200
200
100
100
75.0
25.0
50.0
0.0
Clock-Cycle time
Serial Clock-High time
CH
Serial Clock-Low time
CL
Command Data Set-Up time
Command Data Hold time
Reply Data Set-Up time
CDS
CDH
RDS
RDH
Reply Data Hold time
Maximum 30pF load on each C-BUS interface line.
Figure 13 C-BUS Timing
© 2004 CML Microsystems Plc
44
D/869/4
CMLMICRO [ CML MICROCIRCUITS ]
