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參數(shù)資料
| 型號： | AS91L1002S40F100IG |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | The AS91L1006BU is a one to 6-port JTAG gateway |
| 中文描述： | 該AS91L1006BU是一個6口的JTAG網(wǎng)關 |
| 文件頁數(shù)： | 2/28頁 |
| 文件大小： | 415K |
| 代理商： | AS91L1002S40F100IG |
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July 2004
AS91L1006BU
AS91L1006BU Gateway Functional Description
The basic structure of the AS91L1006BU
device is shown in Figure-1. The core of the device
is the 16-state IEEE1149.1 TAP controller state
machine. All accesses to the internal registers of
the AS91L1006BU device are controlled via this
state machine during normal operation as per the
IEEE1149.1 standard. The address selection logic
enables the AS91L1006BU to operate in a Multi-
Drop environment within system backplane.
The address selection logic compares the
scanned address to the slot address value
presented on the I/O of the AS91L1006BU device.
The LSP park/unpark logic provides control
through instructions scanned in under the
IEEE1149.1 protocol, to select, which LSP will be
placed into the active, scan chain. The pass-
through and LSP connection logic selects the
signal paths for the LSP IEEE1149.1 signals. The
device also supports a Pass-Through mode which
enables the primary IEEE1149.1 signals to be
routed to any of the LSPs. This signal routing is
selectable via I/O pins on the AS91L1006BU
device.
Figure-2 shows the device selection state
machine. The AS91L1006BU will perform an
address compare on the slot address presented
at its I/O and the value scanned in via the
IEEE1149.1. If the value matches then the
AS91L1006BU becomes selected and is ready for
normal access via IEEE1149.1 commands. If the
address does not match then the device will
proceed to the unselected mode, where it will
remain until the AS91L1006BU is issued a
GOTOWAIT instruction or a reset occurs via
TRST or the LSP_RESET pin.
Selected Single
Device
Device
Unselected
Select Group
of Devices
Select All
Devices
Wait for
Selection
Parked-TLR
Parked-RTI
Parked-
PauseIR
UnParked
Parked-
PauseDR
Figure 2 - AS91L1006BU
Selection Logic State machine
Figure 3 - The LSP
Park/Unpark State Machine
The LSP Park/Unpark State Machine controls the insertion of the LSPs into the current active scan
chain. The ability to park the LSP in certain IEEE1149.1 states, enable the AS91L1006BU to perform
several functions including backplane interconnect testing and IC BIST.
www.alsc.com
Alliance Semiconductor
2
2003, 2004 Copyright Alliance Semconductor Corporation. All Rights reserved.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AS91L1002S40L100C | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:The AS91L1006BU is a one to 6-port JTAG gateway |
| AS91L1002S40L100CF | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:The AS91L1006BU is a one to 6-port JTAG gateway |
| AS91L1002S40L100CG | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:The AS91L1006BU is a one to 6-port JTAG gateway |
| AS91L1002S40L100I | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:The AS91L1006BU is a one to 6-port JTAG gateway |
| AS91L1002S40L100IF | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:The AS91L1006BU is a one to 6-port JTAG gateway |
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