MT90840AP Zarlink, MT90840AP Datasheet - Page 60

• 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

† Timing is over recommended temperature & power supply voltages.
‡ Typical figures are at 25
* High Impedance is measured by pulling to the appropriate rail with R
** Individual writes to Connection Memories will have Register Acknowledgment Delay. Burst writes to Connection Memories will have Read
Connection Memory Acknowledgment Delay.
AC Electrical Characteristics
otherwise stated.
16
Memory Acknowledgment Delay
Reading TP Data Memory
Reading RP Data Memory
Reading TP Connection
Memory
Reading RP Connection
Memory
Writing TP Connection
Memory**
Writing RP Connection
Memory**
Characteristics
°
C and are for design aid only: not guaranteed and not subject to production testing.
†
- Motorola Multiplexed Bus Mode -
t
Sym.
akd-mem
Zarlink Semiconductor Inc.
MT90840
clock
cycle
t
t
Min.
244
122
244
akd-wr
akd-wr
1
60
L
, with timing corrected to cancel time taken to discharge C
2 clock
cycles
Typ.
488
366
488
‡
Voltages are with respect to ground (V
cyc +
cyc +
Max.
1306
1062
t
3 clk
t
3 clk
817
akd-wr
774
akd-rd
Units
ns
ns
ns
ns
1 to 5 C4 cycles +
register t
.5 to 4 C4 cycles +
register t
1 to 3 PCKT/R
cycles + register
t
1 to 3 C4 cycles +
register t
Up to 3 PCKT/R
cyc. + register t
Up to 3 C4 cycles +
register t
akd-rd
Conditions/Notes
Test
Data Sheet
akd-rd
akd-rd
akd-rd
akd-wr
L
SS
.
) unless
akd-wr