MT90840AP Zarlink, MT90840AP Datasheet - Page 45

• Manufacturer Part Number: MT90840AP
• Description: Switch Fabric 512 x 2430/512 x 512/2.373K x 2.373K 5V 84-Pin PLCC Tube
• Manufacturer: Zarlink

Specifications of MT90840AP

• Package: 84PLCC
• Number Of Ports: 16
• Fabric Size: 512 x 2430|512 x 512|2.373K x 2.373K
• Switch Core: Non-Blocking
• Port Speed: 8.192|4.096|2.048 Mbps
• Operating Supply Voltage: 5 V

AC Electrical Characteristics
1 C4/8 Input - Clock Period:
2 C4/8 Input Clock Width HIGH
3 C4/8 Input - Clock Width LOW
4 CLK rise/fall time
5 F0 output delay from SPCKo
6 F0i Setup Time from C4/8 input edge
7 F0i Hold Time from C4/8 input edge
8 F0i Input Frame Pulse Width
4.096 MHz (2.048 & 4.096 Mbps)
8.192 MHz (8.192 Mbps)
SPCKo Output - Clock Period from
internal divider (2.048 & 4.096 Mbps)
SPCKo Output - Clock Period
generated from external C4/8 reference
(2.048 and 4.096 Mbps)
4.096 MHz (2.048 & 4.096 Mbps)
8.192 MHz (8.192 Mbps)
SPCKo Output - Clock Width HIGH
from internal divider (2.048 & 4.096
Mbps)
SPCKo Output - Clock Width HIGH
generated from external C4/8 reference
(2.048 and 4.096 Mbps)
4.096 MHz (2.048 & 4.096 Mbps)
8.192 MHz (8.192 Mbps)
SPCKo Output - Clock Width LOW from
internal divider (2.048 & 4.096 Mbps)
SPCKo Output - Clock Width LOW
generated from external C4/8 reference
(2.048 and 4.096 Mbps)
(TM2 & TM3, 2.048 and 4.096 Mbps)
F0 output delay from C4/8 input
(TM2 & TM3, 8.192 Mbps)
TM1
TM2 with SFDI =1
TM1
TM2 with SFDI =1
2.048, 4.096, 8.192 Mbps
Characteristics
- Voltages are with respect to ground (V
Zarlink Semiconductor Inc.
Sym.
t
t
t
t
t
t
clkh
t
clkl
frw
clk
frh
t
frs
df
t
MT90840
Min.
45
200
100
224
241
101
110
101
110
85
50
85
50
28
35
0
8
0
Typ.
244
122
122
122
61
61
SS
5
) unless otherwise stated.
‡
32
51
30
46
Max.
259
245
135
135
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
C4/8R1 or C4/8R2
19.44 MHz 60/40% duty-
cycle clock at PCKR
C4/8R1 input with 244 ns
cycle
C4/8R1 or C4/8R2
19.44 MHz 60/40% duty-
cycle clock at PCKR
C4/8R1 input with min.
115 ns semi-cycle
C4/8R1 or C4/8R2
PCKR with 60/40% duty
cycle
C4/8R1 input with
minimum 115 ns half-
cycle
C
C
C
C
C4/8 falling edge
C4/8 falling edge
C4/8 rising or falling
L
L
L
L
=30pF
=150pF
=30pF
=150pF
Test Conditions
Data Sheet