CMX993 Datasheet, PDF (25/26 Pages) CML Microcircuits – Programmable 30dB Output Gain Range

Quadrature Modulator
CMX993/CMX993W
C-BUS Timings (See Figure 9)
t_CSE
CSN-Enable to Clock-High Time
t_CSH
Last Clock-High to CSN-High Time
t_CSOFF CSN-High Time between transactions
t_NXT
Inter-Byte Time
t_CK
Clock-Cycle Time
t_CH
Serial Clock (SCLK) - High Time
t_CL
Serial Clock (SCLK) - Low Time
t_CDS
Command Data (CDATA) - Set-Up Time
t_CDH
Command Data (CDATA) – Hold Time
Notes
Maximum 30pF load on each C-BUS interface line.
Min.
100
100
1.0
200
200
100
100
75.0
25.0
Typ.
-
-
-
-
-
-
-
-
-
Max.
-
-
-
-
-
-
-
-
-
Units
ns
ns
µs
ns
ns
ns
ns
ns
ns
CSN
SCLK
CDATA
t_CSE
t_CK
t_NXT
t_CSH ^tCSOFF
76543210
76543210
= Level not important or undefined
70%VDD
30%VDD
t_CL
t_CDS
t_CH
SCLK
t_CDH
CDATA
Note: Only 1 byte of data is used in CMX993/CMX993W C-BUS transactions.
Figure 9 C-BUS Timing
 2013 CML Microsystems Plc
25
D/993/10