FX829 Datasheet, PDF (30/34 Pages) CML Microcircuits – Baseband Signal Processor

Baseband Signal Processor
1.7.1 Electrical Performance (continued)
FX829
Figure 11 "C-BUS" Timing
For the following conditions unless otherwise specified:
Xtal Frequency = 4.032MHz, V_DD = 3.3V to 5.0V, Tamb = -40°C to +85°C.
Parameter
t_CSE
t_CSH
t_HIZ
t_CSOFF
t_NXT
t_CK
"CS-Enable to Clock-High"
Last "Clock-High to CS-High"
"CS-High to Reply Output 3-state"
"CS-High" Time between transactions
"Inter-Byte" Time
"Clock-Cycle" time
Notes
Min.
2.0
4.0
-
2.0
4.0
2.0
Typ.
Max.
-
-
2.0
-
-
-
Units
µs
µs
µs
µs
µs
µs
Notes:
1. Depending on the command, 1 or 2 bytes of COMMAND DATA are transmitted to the peripheral
MSB (bit 7) first, LSB (bit 0) last. REPLY DATA is read from the peripheral MSB (bit 7) first,
LSB (bit 0) last.
2. Data is clocked into and out of the peripheral on the rising SERIAL CLOCK edge.
3. Loaded commands are acted upon at the end of each command.
4. To allow for differing µController serial interface formats "C-BUS" compatible ICs are able to
work with either polarity SERIAL CLOCK pulses.
© 1997 Consumer Microcircuits Limited
30
D/829/4