Table 3-7. Four-Signal/Group Multiplexing - AMD Geode SC1200 Data Book

32579B
Default
Ball
No.
Signal Configuration
GPIO
C30 GPIO7 PMR[17] = 0 and
PMR[8] = 0
C31 GPIO8
D28 GPIO6 PMR[18] = 0 and
PMR[8] = 0
C28 GPIO9
B29 GPIO10
Parallel Port
B18 ACK# PMR[23] = 0
and
D22 AFD#/
(PMR[27] = 0 and
DSTRB#
FPCI_MON = 0)
B17 BUSY/
WAIT#
D21 ERR#
B21 INIT#
C21 PD0
A21 PD1
D20 PD2
A20 PD6
Three-Signal/Group Multiplexing (shown here for interface clarification)
C20 PD3 PMR[23] = 0
and
C18 PD4
(PMR[27] = 0 and
C19 PD5 FPCI_MON = 0)
A18 PD7
D17 PE
C17 SLCT
B20 SLIN#
/ASTRB#
A22 STB#/
WRITE#
48

Table 3-7. Four-Signal/Group Multiplexing

Alternate1
Signal Configuration
UART2
RTS2# PMR[17] = 1 and
PMR[8] = 0
CTS2#
DTR2#/BOUT2 PMR[18] = 1 and
PMR[8] = 0
DCD2#
DSR2#
TFT
TFTDE (PMR[23] = 1 and
PMR[15] = 0) and
TFTD2
(PMR[27] = 0 and
FPCI_MON = 0)
TFTD3
TFTD4
TFTD5
TFTD6
TFTD7
TFTD8
TFTD1
TFTD9 PMR[23] = 1
and
TFTD10
(PMR[27] = 0 and
TFTD11 FPCI_MON = 0)
TFTD13
TFTD14
TFTD15
TFTD16
TFTD17
Alternate2
Signal Configuration
IDE2
IDE_DACK1# PMR[17] = 0 and
PMR[8] = 1
IDE_DREQ1
IDE_IOR1# PMR[18] = 0 and
PMR[8] = 1
IDE_IOW1#
IDE_IORDY1
VOP
VOPCK (PMR[23] = 1 and
PMR[15] = 1) and
VOPD1
(PMR[27] = 0 and
FPCI_MON = 0)
VOPD2
VOPD3
VOPD4
VOPD5
VOPD6
VOPD7
VOPD0
---
AMD Geode™ SC1200/SC1201 Processor Data Book
Signal Definitions
Alternate3
Signal Configuration
Internal Test
SDTEST0 PMR[17] = 1 and
PMR[8] = 1
SDTEST4
SDTEST5 PMR[18] = 1 and
PMR[8] = 1
SDTEST2
SDTEST1
FPCI Monitoring
FPCI_CLK PMR[23] = 0
and
INTR_O
(PMR[27] = 1 or
FPCI_MON = 1)
F_C/BE1#
F_C/BE0#
SMI_O
F_AD0
F_AD1
F_AD2
F_AD6
F_AD3 PMR[23] = 0
and
F_AD4
(PMR[27] = 1 or
F_AD5 FPCI_MON = 1)
F_AD7
F_C/BE2#
F_C/BE3#
F_IRDY
F_FRAME#