SC1100 datasheet(34/348 Pages) NSC

34 / 348 page

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Revision 1.1

Signal Definitions (Continued)

Table 2-6. Three-Signal/Group Multiplexing

Ball No.

Default

Alternate1

Alternate2

Signal

Configuration

Signal

Configuration

Signal

Configuration

---

Sub-ISA

GPIO

Sub-ISA

C22

IOW#

PMR[2] = 0 and

PMR[21] = 0

GPIO15

PMR[2] =1 and

PMR[21] = 0

DOCW#

PMR[2] = 1 and

PMR[21] = 1

---

Infrared

Internal Test

C20

IRTX

PMR[6] = 0 and

PMR[29] = x

GXCLK

PMR[6] = 1 and

PMR[29] = 0

TEST3

PMR[6] = 1 and

PMR[29] = 1

---

GPIO

Sub-ISA

B23

GPIO17

PMR[5] = 0 and

PMR[9] = 0

IOCS0#

PMR[5] = 1 and

PMR[9] = 0

IOCHRDY1

PMR[5] = 1 and

PMR[9] = 1

AF19

GPIO11

PMR[18] = 0 and

PMR[8] = 0

RI2

PMR[18] = 1 and

PMR[8] = 0

IRQ153

PMR[18] = 0 and

PMR[8] = 1

---

GPIO

ACCESS.bus

FPCI Monitoring

AE23

GPIO124

PMR[19] = 0

AB2C5

PMR[19] = 1

F_AD3

PMR[27] = 1

AD23

GPIO13

AB2D5

F_AD4

---

GPIO

Internal Test

FPCI Monitoring

B20

GPIO40

PMR[28] = 0 and

PMR[27] = 1 or

FPC_MON = 1

SDTEST5

PMR[28] = 1 and

PMR[27] = 1 or

FPC_MON = 1

F_AD6

PMR[27] = 1 or

FPC_MON = 1

(overrides PMR[28])

AA24

GPIO41

PMR[29] = 0 and

PMR[27] = 1 or

FPC_MON = 1

TEST0

PMR[29] = 1 and

PMR[27] = 1 or

FPC_MON = 1

F_C/BE0#

PMR[27] = 1 or

FPC_MON = 1

(overrides PMR[29])

IOCHRDY input: If selected but not used, should be tied high.

RI# input: If selected but not used, should be tied high.

IRQ15 input: If selected but not used, should be tied low.

GPIO12 input: If selected but not used, should be tied low. This is true for all GPIOs in this device.

AB2C, AB2D inputs: If selected but not used, should be tied high.

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