Motorola CPCI-6020 manual Harrier Power-Up ConfigurationFunctional Description

Harrier Power-Up ConfigurationFunctional Description

Table 4-2 Harrier Power-Up Configuration Settings (continued)

Harrier
XAD Bus	Select	Power Up		Meaning of Power-Up
Signal	Option	Default	Register Bit(s)	Default State
XAD	Jumpers	1111	XCSR.GCSR.PUST	Generic Power Up Status Bits
[23:20]			[3:0]	(Software readable header)
XAD[19]	Resistor	0	State of bit can be	Set PCI Configuration register CLAS to
			inferred:	present class code for “bridge device”.
			XCSR.CLAS
			(XCSR+$308)
XAD[18]	Resistor	1	XCSR.PARB.ENA	Enable internal PCI arbiter
XAD[17]	Fixed	A=1	XCSR.XARB.ENA	Harrier A, enable internal PPC arbiter
		B=0		Harrier B, disable internal PPC arbiter
XAD	Fixed	A=00	XCSR Register	Harrier A XCSR base addr. $FEFF0000
[16:15]		B=01	Group Base	Harrier B XCSR base addr. $FEFF1000
			Address
XAD	On board	000	XCSR.GCSR.RAT	Reserved
[14-12]	logic sets
		001		PPC-to-PCI clock ratio 3:2
	ratio
		010		PPC-to-PCI clock ratio 2:1
		011		PPC-to-PCI clock ratio 5:2
		100		PPC-to-PCI clock ratio 1:1
		101		Reserved
		110		PPC-to-PCI clock ratio 3:1
		111		Reserved
XAD	Fixed	A=01	XCSR.XPAT0.DW	Harrier A, Flash Bank A 16-bits wide
[11:10]		B=XX		Harrier B, Flash Bank A not used.
XAD[9]	Jumper	A=1	XCSR.XPAT0.RVEN	Harrier A, Flash Bank A is Reset Vector.
	on board	B=0		Harrier B has no flash.
XAD	Resistor	A=01	XCSR.XPAT1.DW	Harrier A, Flash Bank B to 16-bit width
[8:7]		B=xx		Harrier B, Flash Bank B not used.
XAD[6]	Fixed	A=1	XCSR.XPAT1.RVEN	Harrier A, Flash Bank B is Reset Vector
		B=0		if and only if Bank A is not Reset Vector.
				Harrier B has no flash.
XAD	Fixed	A=00	XCSR.XPAT2.DW	Harrier A, Xport Ch. 2 8-bit width.
[5:4]		B=xx		Harrier B, Xport Ch. 2 not used.
XAD[3]	Fixed	0	XCSR.XPAT2.RVEN	Disable Xport channel 2 as Reset Vector
XAD	Fixed	xx	XCSR.XPAT2.DW	Xport Channel 3 Data Width
[2:1]				Unused.
XAD[0]	Fixed	0	XCSR.XPAT3.RVEN	Disable Xport channel 3 as Reset Vector

CPCI-6020 CompactPCI Single Board Computer Installation and Use (6806800A51C) 89