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參數(shù)資料
| 型號： | SN74ABT18502PMR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 總線收發(fā)器 |
| 英文描述： | ABT SERIES, DUAL 9-BIT BOUNDARY SCAN REG TRANSCEIVER, TRUE OUTPUT, PQFP64 |
| 封裝： | GREEN, PLASTIC, LQFP-64 |
| 文件頁數(shù)： | 8/32頁 |
| 文件大小： | 578K |
| 代理商： | SN74ABT18502PMR |
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SN74ABT18502
SCAN TEST DEVICE
WITH 18-BIT REGISTERED BUS TRANSCEIVER
SCBS753 – FEBRUARY 2002
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
parallel signature analysis (PSA)
Data appearing at the selected device input pins is compressed into a 36-bit parallel signature in the
shift-register elements of the selected BSCs on each rising edge of TCK. This data is updated in the shadow
latches of the selected input BSCs and applied to the inputs of the normal on-chip logic. Data in the shadow
latches of the selected output BSCs remains constant and is applied to the device outputs. Figures 6 and 7 show
the 36-bit linear-feedback shift-register algorithms through which the signature is generated. An initial seed
value should be scanned into the BSR prior to performing this operation.
=
MASKX.X
1B8-O
1B7-O
1B6-O
1B5-O
1B4-O
1B3-O
1B2-O
1B1-O
1B9-O
1A7-I
1A6-I
1A5-I
1A4-I
1A3-I
1A2-I
1A1-I
1A8-I
1A9-I
2A7-I
2A6-I
2A5-I
2A4-I
2A3-I
2A2-I
2A1-I
2A8-I
2A9-I
2B8-O
2B7-O
2B6-O
2B5-O
2B4-O
2B3-O
2B2-O
2B1-O
2B9-O
=
Figure 6. 36-Bit PSA Configuration (1OEAB = 2OEAB = 0, 1OEBA = 2OEBA = 1)
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| SN74ABT18502PM | ABT SERIES, DUAL 9-BIT BOUNDARY SCAN REG TRANSCEIVER, TRUE OUTPUT, PQFP64 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SN74ABT18502PMRG4 | 功能描述:特定功能邏輯 W/18-Bit Univ Bus Trncvr RoHS:否 制造商:Texas Instruments 產(chǎn)品: 系列:SN74ABTH18502A 工作電源電壓:5 V 封裝 / 箱體:LQFP-64 封裝:Tube |
| SN74ABT18502PN | 制造商:TI 功能描述:74ABT18502 S1A4B |
| SN74ABT18504 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SCAN TEST DEVICES WITH 20-BIT UNIVERSAL BUS TRANSCEIVERS |
| SN74ABT18504PM | 功能描述:特定功能邏輯 Device w/20-Bit Univ Bus Transceiver RoHS:否 制造商:Texas Instruments 產(chǎn)品: 系列:SN74ABTH18502A 工作電源電壓:5 V 封裝 / 箱體:LQFP-64 封裝:Tube |
| SN74ABT18504PMG4 | 功能描述:特定功能邏輯 Device w/20-Bit Univ Bus Transceiver RoHS:否 制造商:Texas Instruments 產(chǎn)品: 系列:SN74ABTH18502A 工作電源電壓:5 V 封裝 / 箱體:LQFP-64 封裝:Tube |
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