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AT90SCR100 Datasheet(PDF) 360 Page - ATMEL Corporation

Part # AT90SCR100
Description  8-bit Microcontroller for Smart Card Readers
PDF  433 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT90SCR100 Datasheet(HTML) 360 Page - ATMEL Corporation

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TPR0327AY–SMS–30Jan09
AT90SCR100
27.7
AT90SCR100 Boundary-scan Order
Table 27-1 shows the Scan order between TDI and TDO when the Boundary-scan chain is
selected as data path. Bit 0 is the LSB; the first bit scanned in, and the first bit scanned out. The
scan order follows the pin-out order as far as possible. Therefore, the bits of Port A and Port K is
scanned in the opposite bit order of the other ports. Exceptions from the rules are the Scan
chains for the analog circuits, which constitute the most significant bits of the scan chain regard-
less of which physical pin they are connected to. In Figure 27-3, PXn. Data corresponds to FF0,
PXn. Control corresponds to FF1, PXn. Bit 4, 5, 6 and 7 of Port F is not in the scan chain, since
these pins constitute the TAP pins when the JTAG is enabled.
Table 27-1.
AT90SCR100 Boundary-scan Order
Bit Number
Signal Name
Module
68
PE0.Data
Port E
67
PE0.Control
66
PE1.Data
65
PE1.Control
64
PE2.Data
63
PE2.Control
62
PE3.Data
61
PE3.Control
60
PE4.Data
59
PE4.Control
58
PE5.Data
57
PE5.Control
56
PE6.Data
55
PE6.Control
54
PE7.Data
53
PE7.Control



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