MT90826 Mitel Networks Corporation, MT90826 Datasheet - Page 23

• Manufacturer Part Number: MT90826
• Description: Quad Digital Switch
• Manufacturer: Mitel Networks Corporation

Advanced Information
Note:1. High Impedance is measured by pulling to the appropriate rail with R
AC Electrical Characteristics - Frame Pulse and CLK
AC Electrical Characteristics - Serial Streams for ST-BUS
10 CLK Period
11 CLK Pulse Width High
12 CLK Pulse Width Low
13 Clock Rise/Fall Time
1
2
3
4
5
6
7
8
9
1
2
3
4
5
Frame pulse width
Frame Pulse Setup time before CLK falling
Frame Pulse Hold Time from CLK falling
CLK Period
CLK Pulse Width High
CLK Pulse Width Low
Frame pulse width
Frame Pulse Setup time before CLK falling
Frame Pulse Hold Time from CLK falling
STi Set-up Time
STi Hold Time
STo Delay - Active to Active
Output Driver Enable (ODE) Delay
STo delay - Active to High-Z
F0i
CLK
(16.384MHz)
STo
(16Mb/s)
STi
(16Mb/s)
- High-Z to Active
Characteristic
Characteristic
Ch255
Bit1
Ch255
Bit1
Figure 6 - ST-BUS Timing for Stream rate of 16.384 Mb/s
Ch255
t
Bit0
FPS
Ch255
t
Bit0
FPW
t
SIS
t
FPH
t
SOD
Ch0
Bit7
Ch0
Bit7
Sym
t
t
t
t
SOD
ODE
t
SIH
SIS
t
ZD
SIH
Ch0
Bit6
Ch0
Bit6
t
CP
Min
11
t
t
Ch0
Bit5
t
Sym
0
8
8
t
FPW8
t
t
t
t
FPS8
FPH8
t
FPW
t
t
t
Ch0
Bit5
FPS
FPH
t
CP8
CH8
CL8
r
CH
CP
CL
, t
f
L
, with timing corrected to cancel time taken to discharge C
Typ
Ch0
Bit4
t
Ch0
Bit4
Min
115
110
-10
CH
55
10
55
20
20
10
50
50
5
5
Max
30
43
35
35
Ch0
Bit3
Ch0
Bit3
Typ
t
CL
Units
Ch0
Bit2
ns
ns
ns
ns
ns
Ch0
Bit2
Max
145
150
+10
CMOS
65
70
40
40
75
75
t
r
C
C
R
Note 1
R
Note 1
Ch0
Bit1
L
L
L
L
Ch0
Bit1
=30pF
=200pF
=1K, C
=1K, C
Units
t
Test Conditions
f
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MT90826
L
L
V
V
V
=200pF, See
=200pF, See
V
V
V
TT
TT
TT
HM
TT
LM
16.384MHz
8.192MHz
CLK
L
.
23