SMSC TMC2005-JT FIGURE 15 - CASCADE CONNECTION OF 16 PORT HUB

ARCNET 5 Port HUB Controller

Datasheet

Fig.15 shows a 16 ports HUB with four TMC2005s connected by open–drain ports. When assigning two ports for cascade connection to the same TMC2005, the number of TMC2005s for serial connection can be reduced to the number of HUBs plus two.

																HUB2																							HUB 3
					TMC2005						TMC2005						TMC2005						TMC2005						TMC2005						TMC2005						TMC2005					TMC2005
					1 2 3 4						1 2 3 4						1 2 3 4						1 2 3 4					1 2 3 4					1 2 3 4						1 2 3 4						1 2 3 4
					1	2	3	4			1	2	3	4			1	2	3	4			1	2	3	4	1			2	3	4	1			2	3	4	1			2	3	4	1		2	3	4
		HUB 1																																																HUB 4
	TMC2005						TMC2005						TMC2005						TMC2005															TMC2005						TMC2005					TMC2005					TMC2005
1 2 3 4					1 2 3 4						1 2 3 4						1 2 3 4																1 2 3 4						1 2 3 4						1 2 3 4					1 2 3 4
1		2	3	4	1			2	3	4	1			2	3	4	1			2	3	4											1		2	3	4		1		2	3	4		1	2	3	4		1	2	3	4
		NODE																																																		NODE

FIGURE 15 - CASCADE CONNECTION OF 16 PORT HUB

Note: When connecting TMC2005 by open-drain output on a board, connecting TMC2005s must be four or less, and the data rate must be 5Mbps or slower. The pattern of open-drain output has to be as short as possible (less than 15cm).

SMSC TMC2005-JT Page 25 Revision 1.1 (07-24-07)

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