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| 型号： | SN74ABT18502PMR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 总线收发器 |
| 英文描述： | ABT SERIES, DUAL 9-BIT BOUNDARY SCAN REG TRANSCEIVER, TRUE OUTPUT, PQFP64 |
| 封装： | GREEN, PLASTIC, LQFP-64 |
| 文件页数： | 6/32页 |
| 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
14
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
pseudorandom pattern generation (PRPG)
A pseudorandom pattern is generated in the shift-register elements of the selected BSCs on each rising edge
of TCK, updated in the shadow latches, and applied to the associated device output pins on each falling edge
of TCK. This data also is updated in the shadow latches of the selected input BSCs and applied to the inputs
of the normal on-chip logic. Figures 4 and 5 show the 36-bit linear-feedback shift-register algorithms through
which the patterns are generated. An initial seed value should be scanned into the BSR before performing this
operation. A seed value of all zeroes does not produce additional patterns.
=
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 4. 36-Bit PRPG Configuration (1OEAB = 2OEAB = 0, 1OEBA = 2OEBA = 1)
相关PDF资料 |
PDF描述 |
|---|---|
| SN74ABT18502PM | ABT SERIES, DUAL 9-BIT BOUNDARY SCAN REG TRANSCEIVER, TRUE OUTPUT, PQFP64 |
| SN74ABT18504PMRG4 | ABT SERIES, 20-BIT BOUNDARY SCAN REG TRANSCEIVER, TRUE OUTPUT, PQFP64 |
| SN74ABT18640DGGR | ABT SERIES, DUAL 9-BIT BOUNDARY SCAN TRANSCEIVER, INVERTED OUTPUT, PDSO56 |
| SN74ABT18640DLR | ABT SERIES, DUAL 9-BIT BOUNDARY SCAN TRANSCEIVER, INVERTED OUTPUT, PDSO56 |
| SN74ABT2240ADWRG4 | ABT SERIES, DUAL 4-BIT DRIVER, INVERTED OUTPUT, PDSO20 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SN74ABT18502PMRG4 | 功能描述:特定功能逻辑 W/18-Bit Univ Bus Trncvr RoHS:否 制造商:Texas Instruments 产品: 系列:SN74ABTH18502A 工作电源电压:5 V 封装 / 箱体:LQFP-64 封装:Tube |
| SN74ABT18502PN | 制造商:TI 功能描述:74ABT18502 S1A4B |
| SN74ABT18504 | 制造商:TI 制造商全称:Texas Instruments 功能描述:SCAN TEST DEVICES WITH 20-BIT UNIVERSAL BUS TRANSCEIVERS |
| SN74ABT18504PM | 功能描述:特定功能逻辑 Device w/20-Bit Univ Bus Transceiver RoHS:否 制造商:Texas Instruments 产品: 系列:SN74ABTH18502A 工作电源电压:5 V 封装 / 箱体:LQFP-64 封装:Tube |
| SN74ABT18504PMG4 | 功能描述:特定功能逻辑 Device w/20-Bit Univ Bus Transceiver RoHS:否 制造商:Texas Instruments 产品: 系列:SN74ABTH18502A 工作电源电压:5 V 封装 / 箱体:LQFP-64 封装:Tube |
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