CMX865D2 CML Microcircuits, CMX865D2 Datasheet - Page 40

• Manufacturer Part Number: CMX865D2
• Description: FSK Modem and DTMF Codec
• Manufacturer: CML Microcircuits

FSK Modem and DTMF Codec
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 CMX865.
© 2005 CML Microsystems Plc
C-BUS Timings (See Figure 13)
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
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 time
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 13 C-BUS Timing
40
Notes
75.0
25.0
50.0
Min.
100
100
200
200
100
100
0.0
1.0
0.0
-
Typ.
-
-
-
-
-
-
-
-
-
-
-
-
-
Max.
1.0
-
-
-
-
-
-
-
-
-
-
-
-
CMX865
D/865/3
Units
ns
ns
ns
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns