CMX228S1 MX-COM, Inc., CMX228S1 Datasheet - Page 31

• Manufacturer Part Number: CMX228S1
• Description: ISDN data and telephony protocol engine with x.25
• Manufacturer: MX-COM, Inc.

ISDN Data and Telephony Protocol Engine with x.25
6.1.3.2 AC Timing Parameters
For the following conditions unless otherwise specified:
Xtal Frequency = 32MHz, AV
6.1.3.2.1
Where: T =
MX-COM, Inc
4800 Bethania Station Road, Winston-Salem, NC, 27105-1201, USA
www.mxcom.com tel: [phone] 744 5050 fax: [phone]
All trademarks and service marks are held by their respective companies
Address setup time
ASTB high-level width
Address hold time to (ASTB )
Address hold time (to RD
Delay from address to RD
Address float time (to RD
Delay from address to data input
Delay from ASTB to data input
Delay from RD
Delay from ASTB to RD
Data hold time (to RD
Delay from RD
Delay from RD
Address hold time (to WR
Delay from address to WR
Delay from ASTB to data output
Delay from WR
Delay from ASTB to WR
RD low-level width
a =
n =
Parameter
Read/Write operation (1/2)
to address active
to ASTB
to data input
t
1 (during address wait), otherwise, 0
Number of wait states (n = 2)
to data output
CYK
(system clock cycle time)
)
)
)
)
DD
= DV
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Symbol
SAST
WSTH
HSTLA
HRA
DAR
FRA
DAID
DSTID
DRID
DSTR
HRID
DRA
DRST
WRL
HWA
DAW
DSTOD
DWOD
DSTW
DD0
= DV
V
V
V
V
V
V
V
V
After program is read
After program is read
V
After data is read
After data is read
V
V
V
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD1
Conditions
= +5.0 V ±10%
= +5.0V ± 10%
= +5.0 V ± 10%
= +5.0 V ± 10%
= +5.0V ±10%
= +5.0V ±10%
= +5.0V ±10%
= +5.0 V ±10%
= 5.0 V ±10%
= +5.0V ±10%
= +5.0V ±10%
= +5.0 V ±10%
= 3.0V to 5.0V, T
31
(0.5 + a) T - 15
(0.5 + a) T - 31
(0.5 + a) T - 17
(0.5 + a) T - 40
0.5T - 24
0.5T - 34
0.5T - 14
(1 + a) T - 9
(1 + a) T - 15
0.5T - 9
0
0.5T - 8
0.5T - 12
0.5T - 8
1.5T - 12
0.5T - 17
(1.5 + n) T - 30
(1.5 + n) T - 40
0.5T - 14
(1 + a) T - 5
(1 + a) T - 15
0.5T - 9
AMB
Min.
= - 40°C to +85°C.
2000 Chiron Technology Limited
0
(2.5 + a + n) T - 37
(2.5 + a + n) T - 52
(2 + n) T - 40
(2 + n) T - 60
(1.5 + n) T - 50
(1.5 + n) T - 70
0.5T + 19
0.5T + 35
0.5T - 11
CMX228 Advance Information
Max.
Doc. # 20480216.001
2000 MX-COM, Inc.
Units
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