CMX624D2 데이터 시트보기 (PDF) - MX-COM Inc
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CMX624D2 Datasheet PDF : 25 Pages
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Bell 202 and V.23 Compatible Modem
24
6.1.4 Timing
CMX624 Preliminary Information
Serial Bus Timings
tCSE
tCSH
tLOZ
tHIZ
tCSOFF
tNXT
tCK
tCH
tCL
tCDS
tCDH
tRDS
tRDH
Description
CS -Enable to Clock-High time
Last Clock-High to CS -High time
Clock-Low to Reply Output enable time
CS -High to Reply Output 3-state time
CS -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
Notes Min. Typ. Max. Unit
100
ns
100
ns
0.0
ns
1.0 µs
1.0
µs
200
ns
200
ns
100
ns
100
ns
75
ns
25
ns
75
ns
0
ns
Note: These timings are for the latest version of the Serial Bus as embodied in the CMX624, and allow
faster transfers than the original Serial Bus.
CS
tCSE
SERIAL CLOCK
tCK
tNXT
COMMAND DATA
765432 10
tLOZ
REPLY DATA
HI-Z
= Level not important or undefined
tCSH
tCSOFF
765432 10
tHIZ
765432 10
70% VDD
30% VDD
COMMAND
DATA
tCL
tCDS
tCH
tCDH
SERIAL
CLOCK
REPLY
DATA
tCK
tRDS
Figure 16: Serial Bus Timing
tRDH
©1999 MX-COM, Inc.
www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054
Doc. # 20480180.108
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
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