DS31256 Maxim Integrated Products, DS31256 Datasheet - Page 135

• 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

10.1.7
Targets can also abort the current transaction, which means they do not wish for the initiator to attempt
the request again. No data is transferred in a target abort scenario. A target abort is signaled to the
initiator by the simultaneous assertion of PSTOP and deassertion of PDEVSEL
DS31256 is a target, it only issues a target abort when the host is accessing the local bus. This occurs
when the host attempts a bus transaction with a combination of byte enables (PCBE) that are not
supported by the local bus. If such a scenario occurs, it reports through the target-abort-initiated status bit
in the PCI command/status configuration register (Section 10.2). See Section
bus operation. When the DS31256 is a bus master, if it detects a target abort, it reports through the target
abort detected by master status bit in the PCI command/status configuration register (Section 10.2).
Figure 10-8. PCI Target Abort
PCLK
PFRAME
PTRDY
PSTOP
PDEVSEL
PCI Target Abort
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11.1
(Figure
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for details about local
10-8). When the
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