MT8910 Zarlink Semiconductor, MT8910 Datasheet - Page 26

• Manufacturer Part Number: MT8910
• Description: Digital Subscriber Line Interface Circuit
• Manufacturer: Zarlink Semiconductor

AC Electrical Characteristics
† Timing is over recommended temperature & power supply voltages.
‡ Typical figures are at 25 C and are for design aid only: not guaranteed and not subject to production testing.
Notes
10
11
12
13
1
2
3
4
5
6
7
8
9
F0b
C4b
SFb
F0od
DSTi/
CDSTi
DSTo/
CDSTo
F0b Output Pulse Width
F0b Output Delay
C4b Output Clock Period
C4b Pulse Width High
C4b Pulse Width Low
C4b Transition Time
SFb Output Delay
SFb Output Pulse Width
F0od Delay
F0od Pulse Width
Serial Input Setup Time
Serial Input Hold Time
Serial Output Delay
1)
3)
2)
V
V
V
V
V
V
V
V
V
V
V
V
BIT 0, CHANNEL 31
OH
OL
OH
OL
OH
OL
OH
OL
IH
IL
OH
OL
The C4b pulse width low will vary by 48ns during a phase-correction cycle.
These timing parameters are mode independent (NT or LT).
Tested at 5.0V, 25 C only.
Characteristics
t
SFD
t
CFD
Act to High Z
High Z to Act
Act to Act
t
FPW
t
DZA
t
SFW
†
- ST-BUS Timing NT Mode (Ref. Figure 17)
t
Figure 17 - ST-BUS Timing NT Mode
CFD
Sym
t
t
t
t
t
t
t
t
t
t
t
t
t
BIT 7, CHANNEL 0
DFW
t
t
FPW
SFW
CFD
C4H
SFD
DFD
DAA
DZA
DAZ
P4o
C4L
C4T
SIS
SIH
Min
30
50
t
t
C4L
SIS
t
P4o
Typ
244
137
88
15
1
1
1
t
C4T
t
t
‡
C4H
SIH
Max
120
120
120
60
60
60
cycles
cycles
cycles
Units
t
DAA
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
t
DFD
C
150 pF (see Note 3)
150 pF
150 pF
150 pF (see Note 1)
150 pF
C
C
C
C
Note 2)
C
C
150 pF load (see Notes 2 & 3)
150 pF load (see Notes 2 & 3)
150 pF load (see Notes 2 & 3)
L
L
L
L
L
L
L
=150 pF, C4b cycles
=150 pF (see Note 3)
=150 pF, C4b cycles
=150 pF (see Notes 2 & 3)
=150 pF, C4b cycles (see
=150 pF (see Note 2)
=150 pF (see Note 2)
t
DAZ
Test Conditions
t
DFW
MT8910-1
t
DFD
9-27