参数资料
型号: SCANPSC100FDMQB
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: 微控制器/微处理器
英文描述: SPECIALTY MICROPROCESSOR CIRCUIT, CDIP28
封装: CERAMIC, DIP-28
文件页数: 8/27页
文件大小: 381K
代理商: SCANPSC100FDMQB
Serial Scan Interface (SSI) (Continued)
SSC MODE. By setting MODE1(3), the TDI Shifter/Buffer is
reconfigured as a 16-bit SSC (Serial Signature Compactor)
using the primitive polynomial:
F(X) = X16 +X
12 +X3 +X+1
Within a chain of 1149.1 compliant devices, there are typi-
cally one or more input pins which are driven by uncontrolled
signals (i.e., signals which are not driven to known logic
levels during a boundary scan CAPTURE operation). These
signals are masked during the evaluation of data returning
from the scan chain. The SSC within the PSC100 does not
provide masking capabilities and, therefore, provides limited
usefulness for boundary scan test operations. SSC mode
may provide usefulness in other serial test or non-test re-
lated implementations which contain predictable data return-
ing into the TDI shifter/buffer.
10032508
FIGURE 13. TDI Shifter/Buffer Block Diagram
10032513
FIGURE 14. TDI SSC Block Diagram
SCANPSC100F
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相关PDF资料
PDF描述
SCANPSC100FLMQB SPECIALTY MICROPROCESSOR CIRCUIT, CQCC28
SCB68172C2F28 VME BUS CONTROLLER, CDIP28
SCC2691AC1D24 1 CHANNEL(S), 38.4K bps, SERIAL COMM CONTROLLER, PDSO24
SCC2691AE1A28 1 CHANNEL(S), 38.4K bps, SERIAL COMM CONTROLLER, PQCC28
SCC2692AC1A44-T 2 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, PQCC44
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