CMX867D2 CML Microcircuits, CMX867D2 Datasheet - Page 43

• Manufacturer Part Number: CMX867D2
• Description: Low power V.22 modem
• Manufacturer: CML Microcircuits

Low Power V.22 Modem
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 CMX867, and allow faster
transfers than the original C-BUS timings given in CML Publication D/800/Sys/3 July 1994.
C-BUS Timings (See Figure 14)
2001 Consumer Microcircuits Limited
t
t
t
t
t
t
t
t
t
t
t
t
t
CSE
CSH
LOZ
HIZ
CSOFF
NXT
CK
CH
CL
CDS
CDH
RDS
RDH
time
time
CSN-Enable to Clock-High time
Last Clock-High to CSN-High time
Clock-Low to Reply Output enable
CSN-High to Reply Output 3-state
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
Figure 14 C-BUS Timing
43
Notes
75.0
25.0
50.0
Min.
100
100
200
200
100
100
0.0
1.0
0.0
-
Typ.
-
-
-
-
-
-
-
-
-
-
-
-
-
Max.
1.0
-
-
-
-
-
-
-
-
-
-
-
-
CMX867
D/867/2
Units
ns
ns
ns
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns