MT90220
DC Electrical Characteristics* - Voltages are with respect to ground (Vss) unless otherwise stated
‡
Characteristics
Sym Min Typ
Max
Units
Test Conditions
13 Output Low Current
(Digital Outputs)
I
4
mA
Source V =0.4 V, all External SRAM
and PLLREF 0 and 1 interface pins.
OL
OL
14 Output Pin
Capacitance
C
10
10
pF
O
15 High Impedance
Leakage (Digital I/O)
I
-10
1
mA
V = 0 to V
O DD
OZ
* DC Electrical Characteristics are over recommended temperature and supply voltage
‡ Typical figures are at 25°C, V =3.3V, and for design aid only: not guaranteed and not subject to production testing
DD
AC Electrical Characteristics† - PCM PORT ST-BUS Interface Mode - Voltages are with respect to
ground (Vss) unless otherwise stated
‡
Characteristic
Sym
Min
Typ
Max Units
Test Conditions
1
2
3
4
5
6
7
8
9
C4i Clock Width High or Low
C4i Clock Period
t
110
122
244
134
ns
ns
ns
ns
ns
ns
ns
ns
ns
4W
t
4CYC
Frame Pulse Setup
t
4
1
3
0
FPS
Frame Pulse Hold Time
t
FPH
DSTi 0-7 Serial Input Setup
DSTi 0-7 Serial Input Hold
DSTo 0-7 Serial Output Delay
DSTo 0-7 Delay Active to High-Z
DSTo 0-7 Serial High-Z to Active
t
SIS
t
SIH
t
25
25
25
CL = 150pF
SOD
t
t
CL = 150pF
DZ
ZD
0
10
CL = 150pF
† Characteristics are over recommended operating conditions unless otherwise stated
‡ Typical figures are at 25°C, V =3.3V, and for design aid only: not guaranteed and not subject to production testing
DD
ST-BUS
Bit Cells
at DSTi/o 0-7
Channel 31
Bit 0
Channel 0
Bit 7
Channel 0
Bit 6
Channel 0
Bit 5
TXSYNC 0-7/
RXSYNC 0-7
TXCK 0-7/
RXCK 0-7
Figure 24 - ST-BUS Functional Timing Diagram
86
MITEL [ MITEL NETWORKS CORPORATION ]
