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AMD Geode SC1201 User Manual

Page 75

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AMD Geode™ SC1200/SC1201 Processor Data Book

75

General Configuration Block

32579B

22

RSVD (Reserved). Must be set equal to PMR[14] (LPCSEL). The LPC_ROM strap (ball D6) determines the power-on reset
(POR) state of PMR[14] and PMR[22].

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

VOPS (Video Output Port Select). Select VOP signals instead of TFT signals. Works in conjunction with PMR[23], see
PMR[23] for definition.

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.

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

Bit

Description

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