AMD SC1201, SC1200 manual Three-Signal/Group Multiplexing

Signal Definitions 32579B

Table 3-6. Three-Signal/Group Multiplexing

		Default			Alternate1			Alternate2
Ball No.	Signal		Configuration	Signal		Configuration	Signal		Configuration
		Sub-ISA			Sub-ISA1			GPIO
D9	IOR#		PMR[21] = 0 and	DOCR#		PMR[21] = 0 and	GPIO14		PMR[21] = 1 and
			PMR[2] = 0			PMR[2] = 1			PMR[2] = 1
A8	IOW#			DOCW#			GPIO15
		GPIO				AC97	FPCI Monitoring
V31	GPIO16		PMR[0] = 0 and	PC_BEEP		PMR[0] = 1 = 0 and	F_DEVSEL		FPCI_MON = 1
			FPCI_MON = 0			FPCI_MON = 0
		GPIO				PCI2		Sub-ISA
C9	GPIO19		PMR[9] = 0 and	INTC#		PMR[9] = 0 and	IOCHRDY		PMR[9] = 1 and
			PMR[4] = 0			PMR[4] = 1			PMR[4] = 1
		GPIO			Sub-ISA			TFT3
A10	GPIO17		(PMR[23] = 0 and	IOCS0#		(PMR[23] = 0 and	TFTDCK		PMR[23] = 1 and
			PMR[5] = 0) or			PMR[5] = 1) or			PMR[15] = 0
			(PMR[23] = 1 and			(PMR[23] = 1 and
			PMR[15] = 1 and			PMR[15] = 1 and
			PMR[5] = 0)			PMR[5] = 1)
A9	GPIO20		(PMR[23] = 0 and	DOCCS#		(PMR[23] = 0 and	TFTD0		PMR[23] = 1 and
			PMR[7] = 0) or			PMR[7] = 1) or			PMR[15] = 0
			(PMR[23] = 1 and			(PMR[23] = 1 and
			PMR[15] = 1 and			PMR[15] = 1 and
			PMR[7] = 0)			PMR[7] = 1)
D10	GPIO1		(PMR[23] = 0 and	IOCS1#		(PMR[23] = 0 and	TFTD12		PMR[23] = 1 and
			PMR[13] = 0) or			PMR[13] = 1) or			PMR[15] = 0
			(PMR[23] = 1 and			(PMR[23] = 1 and
			PMR[15] = 1 and			PMR[15] = 1 and
			PMR[13] = 0)			PMR[13] = 1)
		AB1				GPIO		Sub-ISA
N31	AB1C		PMR[23] = 0 or	GPIO20		PMR[23] = 1 and	DOCCS#		PMR[23] = 1 and
			(PMR[23] = 1 and			PMR[15] = 0 and			PMR[15] = 0 and
			PMR[15] = 1)			PMR[7] = 0			PMR[7] = 1
N30	AB1D		PMR[23] = 0 or	GPIO1		PMR[23] = 1 and	IOCS1#		PMR[23] = 1 and
			(PMR[23] = 1 and			PMR[15] = 0 and			PMR[15] = 0 and
			PMR[15] = 1)			PMR[13] = 0			PMR[13] = 1
		GPIO			UART2			IDE2
AJ8	GPIO11		PMR[18] = 0 and	RI2#		PMR[18] = 1 and	IRQ15		PMR[18] = 0 and
			PMR[8] = 0			PMR[8] = 0			PMR[8] = 1
		Internal Test				TFT		Internal Test
V30	GXCLK		(PMR[29] = 0 and	FP_VDD_ON		PMR[23] = 1 and	TEST3		PMR[29] = 1 and
			PMR[23] = 0) or			PMR[15] = 0			PMR[23] = 0
			(PMR[23] = 1 and
			PMR[15] = 1)

1.The combination of PMR[21] = 1 and PMR[2] = 0 is undefined and should not be used.

2.The combination of PMR[9] = 1 and PMR[4] = 0 is undefined and should not be used.

3.These TFT outputs are reset to 0 by POR# if the TFT_PRSNT strap is pulled high or PMR[10] = 0. This relates to signals TFTD[17:0],

TFTDE, TFTDCK.

AMD Geode™ SC1200/SC1201 Processor Data Book 47