CMX969D5 MX-COM, Inc., CMX969D5 Datasheet - Page 33

• Manufacturer Part Number: CMX969D5
• Description: MOTIENT/ARDIS RD-LAP MDC4800 Modem
• Manufacturer: MX-COM, Inc.

MOTIENT
Notes:
1. Xtal clock cycles at the XTAL pin.
2. With 30pF max to V
¤ ¤ ¤ ¤ 2001 MX-COM, Inc.
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
ACSL
AH
CSH
CSHI
CSRWL
DHR
DHW
DSW
RHCSL
RACL
RARL
RL
RX
WHCSL
WL
µ µ µ µ C Parallel Interface Timings (ref. Figure 17)
WRITE CYCLE (DATA TO MODEM)
ADDRESS
A0, A1
CS
RD
DATA D0 - D7
READ CYCLE (DATA FROM MODEM)
ADDRESS
A0, A1
CS
WR
DATA D0 - D7
SM
+
+
/ARDIS
* logical 'or' of
** logical 'or' of
WR
RD
**
*
Address valid to CS low time
Address hold time
Read data hold time
Write data hold time
Write data setup time
Read access time from CS low
Read access time from RD low
RD high to CS low time (write)
RD low time
RD high to D0-D7 3-state time
CS hold time
CS high time
CS to WR or RD low time
WR high to CS low time (read)
WR low time
SM
RD-LAP
CS
CS
SS
www.mxcom.com Tel: [phone] 744 5050 Fax: [phone]
and
TM
and
on D0 - D7 pins.
MDC4800 Modem
WR
RD
t
AS
t
AS
signals
signals
Figure 17: µ µ µ µ C Parallel Interface Timings
ADDRESS VALID
t
ADDRESS VALID
RA
t
WL
t
RL
33
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Notes
t
1
2
2
DSW
DATA VALID
VALID DATA
Min.
90.0
200
200
6.0
0
0
0
0
0
0
0
0
t
DHR
Typ.
t
t
t
DHW
AH
AH
t
t
CSHI
RX
t
CSHI
CMX969 Advance Information
Max.
50.0
175
145
Doc. # 20480211.002
clock cycles
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns