AMD SC3200 manual Rsvd Reserved. Write to, Ball # Gpio Signals LPC Signals Name Add’l Dependencies

General Configuration Block 32581C

Table 4-2. Multiplexing, Interrupt Selection, and Base Address Registers (Continued)

Bit	Description
21	IOCSEL (Select I/O Commands). Selects ball functions.
	Ball #	0: I/O Command Signals		1: GPIO Signals
		Name	Add’l Dependencies	Name	Add’l Dependencies
	F1 / D9	IOR#	PMR[2] = 0	GPIO14	PMR[2] = 1
		DOCR#	PMR[2] = 1	Undefined	PMR[2] = 0
	G3 / A8	IOW#	PMR[2] = 0	GPIO15	PMR[2] = 1
		DOCW#	PMR[2] = 1	Undefined	PMR[2] = 0
20	Reserved. Must be set to 0.
19	AB2SEL (Select ACCESS.bus 2). Selects ball functions.
	Ball #	0: GPIO Signals		1: ACCESS.bus 2 Signals
		Name	Add’l Dependencies	Name	Add’l Dependencies
	AJ12 / N29	GPIO12	None	AB2C	None
	AL11 / M29	GPIO13	None	AB2D	None
18	SP2SEL (Select SP2 Additional Pins). Selects ball functions.
	Ball #	0: GPIO, IDE Signals		1: Serial Port Signals
		Name	Add’l Dependencies	Name	Add’l Dependencies
	AH3 / D28	GPIO6	PMR[8] = 0	DTR2#/BOUT2	PMR[8] = 0
		IDE_IOR1#	PMR[8] = 1	SDTEST5	PMR[8] = 1
	AG4 / C28	GPIO9	PMR[8] = 0	DCD2#	PMR[8] = 0
		IDE_IOW1#	PMR[8] = 1	SDTEST2	PMR[8] = 1
	AJ1 / B29	GPIO10	PMR[8] = 0	DSR2#	PMR[8] = 0
		IDE_IORDY1	PMR[8] = 1	SDTEST1	PMR[8] = 1
	H30 / AJ8	GPIO11	PMR[8] = 0	RI2#	PMR[8] = 0
		IRQ15	PMR[8] = 1	Undefined	PMR[8] = 1
17	SP2CRSEL (Select SP2 Flow Control). Selects ball functions.
	Ball #	0: GPIO, IDE Signals		1: Serial Port Signals
		Name	Add’l Dependencies	Name	Add’l Dependencies
	AH4 / C30	GPIO7	PMR[8] = 0	RTS2#	PMR[8] = 0
		IDE_DACK1#	PMR[8] = 1	SDTEST0	PMR[8] = 1
	AJ2 / C31	GPIO8	PMR[8] = 0	CTS2#	PMR[8] = 0
		IDE_DREQ1	PMR[8] = 1	SDTEST4	PMR[8] = 1
16	SP1SEL (Select SP1 Additional Pin). Selects ball function.
	Ball #	0: GPIO Signal		1: Serial Port Signal
		Name	Add’l Dependencies	Name	Add’l Dependencies
	A28 / AG1	GPIO18	None	DTR1#/BOUT1	None
15	RSVD (Reserved). Write to 0.
14	LPCSEL (Select LPC Bus). Selects ball functions. The LPC_ROM strap (ball D6) determines the power-on reset (POR)
	state of PMR[14] and PMR[22].
	Ball #	0: GPIO Signals		1: LPC Signals
		Name	Add’l Dependencies	Name	Add’l Dependencies
	AJ11 / M28	GPIO32	PMR[22] = 0	LAD0	PMR[22] = 1
	AL10 / L31	GPIO33	PMR[22] = 0	LAD1	PMR[22] = 1
	AK10 / L30	GPIO34	PMR[22] = 0	LAD2	PMR[22] = 1
	AJ10 / L29	GPIO35	PMR[22] = 0	LAD3	PMR[22] = 1
	AL9 / L28	GPIO36	PMR[22] = 0	LDRQ#	PMR[22] = 1
	AK9 / K31	GPIO37	PMR[22] = 0	LFRAME#	PMR[22] = 1
	AJ9 / K28	GPIO38/IRRX2	PMR[22] = 0	LPCPD#	PMR[22] = 1
	AL8 / J31	GPIO39	PMR[22] = 0	SERIRQ	PMR[22] = 1
13	IOCS1SEL (Select IOCS1). Selects ball functions for IOCS1# or GPIO1. Works in conjunction with PMR[23], see PMR[23]
	for definition.

AMD Geode™ SC3200 Processor Data Book 73