4.0 S-LINK Usage Instructions

4.14 Assignment of Unused Lines

It is intended that simplex and duplex S-LINKs and S-LINKs of different data width should be interchangeable as far as obvious limitations will allow. To ensure this, it is important that unused lines are assigned as defined in Table 15. Note that the assignments given in this table are also noted in the text.

TABLE 15. Assignment of Unused Lines
on the motherboard on the S-LINK
Signal Lines Simplex Duplex Simplex Duplex
URL[3..0] Connect to GND Output Not connected Input
LRL[3..0] Not connected Input Connect to GND Output
UXOFF# Pull up to Vcc Output Not connected Input
UD[n..0] Connect to GND Connect to GND Not connected Not connected
LD[n..0] Not connected Not connected Connect to GND Connect to GND

The S-LINK Interface Specification - 27 MARCH 1997

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	on the motherboard		on the S-LINK
Signal Lines	Simplex	Duplex	Simplex	Duplex
URL[3..0]	Connect to GND	Output	Not connected	Input
LRL[3..0]	Not connected	Input	Connect to GND	Output
UXOFF#	Pull up to Vcc	Output	Not connected	Input
UD[n..0]	Connect to GND	Connect to GND	Not connected	Not connected
LD[n..0]	Not connected	Not connected	Connect to GND	Connect to GND