SMSC LAN91C111 NOTES, VL BUS, SIGNAL, SIGNAL, LAN91C111, UNUSED PINS, Table 12.1 VL Local Bus Signal Connections (continued)

10/100 Non-PCI Ethernet Single Chip MAC + PHY

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Table 12.1 VL Local Bus Signal Connections (continued)

VL BUS	LAN91C111	NOTES
SIGNAL	SIGNAL
D0-D31	D0-D31	32 bit data bus. The bus byte(s) used to access the device are a function
		of nBE0-nBE3:
			nBE0	nBE1	nBE2		nBE3
			0 0	0	0	Double word access
			0	0	1	1		Low word access
			1	1	0	0		High word access
			0	1	1	1		Byte 0 access
			1	0	1	1		Byte 1 access
			1	1	0	1		Byte 2 access
			1	1	1	0		Byte 3 access
		Not used = tri-state on reads, ignored on writes. Note that nBE2 and
		nBE3 override the value of A1, which is tied low in this application.
nLDEV	nLDEV	nLDEV is a totem pole output. nLDEV is active on valid decodes of A15-
		A4 and AEN=0.
			UNUSED PINS
VCC	nRD nWR
GND	A1 nVLBUS
OPEN	nDATCS

SMSC LAN91C111 REV C 99 Revision 1.91 (08-18-08)

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