ETM10™ Technical Reference Manual 4.2. Scan chain configurations

4.2. Scan chain configurations

ETM10 is a full-scan design comprising the following configuration options:

6, 12, or 24 internal scan chains: Controlled by SCANMUX6 and SCANMUX12.
One or two wrapper scan chains: Controlled by WMUX2.

The ETM10 internal scan chain concatenations are shown in Table 4.1.

Table 4.1. Internal scan chain concatenations

Mode	Scan chains concatenated	ScanIn	ScanOut
SCANMUX12	23, 11	SCANIN[11]	ETM10SCANOUT[11]
SCANMUX12	22, 10	SCANIN[10]	ETM10SCANOUT[10]
SCANMUX12	21, 9	SCANIN[9]	ETM10SCANOUT[9]
SCANMUX12	20, 8	SCANIN[8]	ETM10SCANOUT[8]
SCANMUX12	19, 7	SCANIN[7]	ETM10SCANOUT[7]
SCANMUX12	18, 6	SCANIN[6]	ETM10SCANOUT[6]
SCANMUX12	17, 5	SCANIN[5]	ETM10SCANOUT[5]
SCANMUX12	16, 4	SCANIN[4]	ETM10SCANOUT[4]
SCANMUX12	15, 3	SCANIN[3]	ETM10SCANOUT[3]
SCANMUX12	14, 2	SCANIN[2]	ETM10SCANOUT[2]
SCANMUX12	13, 1	SCANIN[1]	ETM10SCANOUT[1]
SCANMUX12	12, 0	SCANIN[0]	ETM10SCANOUT[0]
SCANMUX6	23, 11, 17, 5	SCANIN[5]	ETM10SCANOUT[5]
SCANMUX6	22, 10, 16, 4	SCANIN[4]	ETM10SCANOUT[4]
SCANMUX6	21, 9, 15, 3	SCANIN[3]	ETM10SCANOUT[3]
SCANMUX6	20, 8, 14, 2	SCANIN[2]	ETM10SCANOUT[2]
SCANMUX6	19, 7, 13, 1	SCANIN[1]	ETM10SCANOUT[1]
SCANMUX6	18, 6, 12, 0	SCANIN[0]	ETM10SCANOUT[0]

The internal scan chains do not cross clock domains during 6, 12, or 24 scan chain modes.

For scan testing of the core, you must tie the SCANMUX12, SCANMUX6, and WMUX2 signals in one of the configurations listed in Table 4.2.

Table 4.2. Scan chain configurations

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