DS31256 Maxim Integrated Products, DS31256 Datasheet - Page 174

• Manufacturer Part Number: DS31256
• Description: IC CTRLR HDLC 256-CHANNEL 256BGA
• Manufacturer: Maxim Integrated Products

Specifications of DS31256

• Controller Type: HDLC Controller
• Interface: Serial
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 500mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

AC CHARACTERISTICS: PCI BUS INTERFACE
(V
Note 15: Aggregate, maximum bandwidth and port speed for the DS31256 are directly proportional to PCLK frequency. Ensure that PCLK is
Note 16: The PCI extension signals PABLAST, PXAS, and PXDS have a 15ns max. These signals are not part of the PCI Specification.
Figure 13-5. PCI Bus Interface AC Timing Diagram
PCLK Period
PCLK Low Time
PCLK High Time
All PCI Inputs and I/O Setup Time to the
Rising Edge of PCLK
All PCI Inputs and I/O Hold Time from the
Rising Edge of PCLK
Delay from the Rising Edge of PCLK to
Data Valid on All PCI Outputs and I/O
Delay from the Rising Edge of PCLK to
Tri-State on All PCI Outputs and I/O
Delay from the Rising Edge of PCLK to
Active from Tri-State on All PCI Outputs
and I/O
DD
= 3.0V to 3.6V, T
33MHz for maximum throughput.
PCLK
PCI Input
& I/O
PCI Output
& I/O
PCI Output &
I/O to Tri-State
PCI Output &
I/O from Tri-State
PARAMETER
A
= 0°C to +70°C.)
Tri-State
t2
SYMBOL
t1
t2
t3
t4
t5
t6
t7
t8
174 of 183
t4
t1
(Note 15)
(Note 16)
CONDITIONS
t5
t8
t6
t7
t3
Data Valid
MIN
30
12
12
7
0
2
2
TYP
Tri-State
MAX
40
11
28
UNITS
ns
ns
ns
ns
ns
ns
ns
ns