32579BGeneral Configuration Block

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

Bit

Description

 

 

 

 

 

 

 

 

12

TRDESEL (Select TRDE#). Selects ball function.

 

 

 

Ball #

0: Sub-ISA Signal

 

1: GPIO Signal

 

 

 

Name

Add’l Dependencies

Name

Add’l Dependencies

 

H1 / D11

TRDE#

None

GPIO0

None

 

 

 

 

11

EIDE (Enable IDE Outputs). This bit enables IDE output signals.

 

 

 

0: IDE signals are HiZ. Other signals multiplexed on the same balls are HiZ until this bit is set. (without regard to bit 24 of

 

this register). This bit does not control IDE channel 1 control signals selected by bit 8 of this register.

 

1: Signals are enabled.

 

 

 

 

 

10

ETFT (Enable TFT Outputs). This bit enables TFT output signals, that are multiplexed with the Parallel Port and controlled

 

by PMR[23].

 

 

 

 

 

0: Signals TFTD[17:0], TFTDE and TFTDCK are set to 0.

 

 

 

1: Signals TFTD[17:0], TFTDE and TFTDCK are enabled.

 

 

 

Note: TFTDCK that is multiplexed on IDE_RST# (ball AA1) is also enabled by this bit.

 

 

 

 

 

9

IOCHRDY (Select IOCHRDY). Selects ball function.

 

 

 

Ball #

0: PCI, GPIO Signal

1: Sub-ISA Signal

 

 

 

Name

Add’l Dependencies

Name

Add’l Dependencies

 

H4 / C9

GPIO19

PMR[4] = 0

IOCHRDY

PMR[4] = 1

 

 

INTC#

PMR[4] = 1

Undefined

PMR[4] = 0

 

 

8

IDE1SEL (Select IDE Channel 1). Selects IDE Channel 1 or GPIO ball functions. Works in conjunction with PMR[18] and

 

PMR[17], see PMR[18] and PMR[17] for definitions.

 

 

 

 

7

DOCCSSEL (Select DOCCS#). Selects DOCCS# or GPIO20 ball functions. Works in conjunction with PMR[23], see

 

PMR[23] for definition.

 

 

 

 

 

 

 

6

SP3SEL (Select UART3). Selects ball functions.

 

 

 

Ball #

0: IR Signals

 

1: Serial Port Signals

 

 

Name

Add’l Dependencies

Name

Add’l Dependencies

 

J28 / AK8

IRRX1

None

SIN3

None

 

J3 / C11

IRTX

None

SOUT3

None

 

 

5

IOCS0SEL (Select IOCS0#). Selects ball function. Works in conjunction with PMR[23], see PMR[23] for definition.

 

 

4

INTCSEL (Select INTC#). Selects ball function. Works in conjunction with PMR[9], see PMR[9] for definition.

 

 

 

 

 

3

Reserved. Write as read.

 

 

 

 

 

2

DOCWRSEL (Select DiskOnChip and NAND Flash Command Lines). Selects ball functions. Works in conjunction with

 

PMR[21], see PMR[21] for definition.

 

 

 

 

 

 

 

 

1

Reserved. Write as read.

 

 

 

 

 

 

 

0

PCBEEPSEL (Select PC_BEEP). Selects ball function.

 

 

 

Ball #

0: GPIO Signal

 

1: Audio Signal

 

 

 

Name

Add’l Dependencies

Name

Add’l Dependencies

 

AL15 / V31

GPIO16

FPCI_MON = 0

PC_BEEP

FPCI_MON] = 0

 

 

F_DEVSEL#

FPCI_MON = 1

F_DEVSEL#

FPCI_MON = 1

 

 

 

 

 

 

Offset 34h-37h

Miscellaneous Configuration Register - MCR (R/W)

Reset Value: 0000001h

Power-on reset value: The BOOT16 strap pin selects "Enable 16-Bit Wide Boot Memory".

 

 

 

31

DID0 (Ball C5) Strap Status. (Read Only) Represents the value of the strap that is latched after power-on reset. Read in

 

conjunction with bit 29.

 

 

 

 

 

30

FPCI_MON (Ball A4) Strap Status. (Read Only) Represents the value of the strap that is latched after power-on reset.

 

Indicates if Fast-PCI monitoring output signals (instead of Parallel Port and some audio signals) are enabled. The state of

 

this bit along with PMR[27] control the Fast-PCI monitoring function. See PMR[27] definition.

 

 

29

DID1 (Ball C6) Strap Status. (Read Only) Represents the value of the strap that is latched after power-on reset. Read in

 

conjunction with bit 31.

 

 

 

 

 

 

 

 

 

28:20

Reserved.

 

 

 

 

 

 

 

 

 

 

76

AMD Geode™ SC1200/SC1201 Processor Data Book

Page 76
Image 76
AMD SC1200, SC1201 manual 32579BGeneral Configuration Block, Reserved