DS31256 Maxim Integrated Products, DS31256 Datasheet - Page 152

• 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

Figure 11-4. Local Bus Access Flowchart
Set the LBE Status Bit
Start 9 Clock Timer
Local Bus Access
Progresses
LRDY Active?
Timer Expired?
No
No
Yes
Yes
No
Yes
Is the External Local Bus
Ready (LRDY) Being Used?
Is Arbitration Enabled
for the Local Bus?
PCI Host Initiates a
Local Bus Access
Local Bus Access
Progresses
Are there 16 Clocks
Remaining?
Normal Access
Is the Local Bus
Granted?
152 of 183
Occurs
Yes
No
Yes
Yes
No
No
PCI Target Retry
Issued
Request
the Bus