DS31256 Maxim Integrated Products, DS31256 Datasheet - Page 135
DS31256
Manufacturer Part Number
DS31256
Description
IC CTRLR HDLC 256-CHANNEL 256BGA
Manufacturer
Maxim Integrated Products
Datasheet
1.DS31256.pdf
(183 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
DS31256
Manufacturer:
DALLAS
Quantity:
20 000
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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
1
2
3
4
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5
6
7
8
11.1
(Figure
9
for details about local
10-8). When the
10
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