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Signal Definitions
Default
Ball No.
Signal
V31
GPIO16
GPIO
C9
GPIO19
Parallel Port
B18
ACK#
D22
AFD#/DSTRB#
B17
BUSY/WAIT#
D21
ERR#
B21
INIT#
C21
PD0
A21
PD1
D20
PD2
C20
PD3
C18
PD4
C19
PD5
A20
PD6
A18
PD7
D17
PE
C17
SLCT
B20
SLIN#
/ASTRB#
A22
STB#/WRITE#
GPIO
A10
GPIO17
A9
GPIO20
D10
GPIO1
N31
AB1C
N30
AB1D
GPIO
AJ8
GPIO11
Internal Test
V30
GXCLK
1.
The combination of PMR[21] = 1 and PMR[2] = 0 is undefined and should not be used.
2.
The combination of PMR[9] = 1 and PMR[4] = 0 is undefined and should not be used.
3.
These TFT outputs are reset to 0 by POR# if the TFT_PRSNT strap is pulled high or PMR[10] = 0. This relates to signals TFTD[17:0],
TFTDE, TFTDCK.
AMD Geode™ SC3200 Processor Data Book
Table 3-6. Three-Signal/Group Multiplexing (Continued)
Configuration
Signal
PMR[0] = 0 and
PC_BEEP
FPCI_MON = 0
PMR[9] = 0 and
INTC#
PMR[4] = 0
PMR[23] = 0 and
TFTDE
(PMR[27] = 0 and
TFTD2
FPCI_MON = 0)
TFTD3
TFTD4
TFTD5
TFTD6
TFTD7
TFTD8
TFTD9
TFTD10
TFTD11
TFTD1
TFTD13
TFTD14
TFTD15
TFTD16
TFTD17
PMR[23] = 0 and
IOCS0#
PMR[5] = 0
PMR[23] = 0 and
DOCCS#
PMR[7] = 0
PMR[23] = 0 and
IOCS1#
PMR[13] = 0
AB1
PMR[23] = 0
GPIO20
PMR[23] = 0
GPIO1
PMR[18] = 0 and
RI2#
PMR[8] = 0
PMR[23] = 0 and
TEST3
PMR[29] = 0
Alternate1
Configuration
PMR[0] = 1 = 0 and
F_DEVSEL
FPCI_MON = 0
2
PCI
PMR[9] = 0 and
IOCHRDY
PMR[4] = 1
3
TFT
PMR[23] = 1 and
FPCI_CLK
(PMR[27] = 0 and
INTR_O
FPCI_MON = 0)
F_C/BE1#
F_C/BE0#
SMI_O
F_AD0
F_AD1
F_AD2
F_AD3
F_AD4
F_AD5
F_AD6
F_AD7
F_C/BE2#
F_C/BE3#
F_IRDY
F_FRAME#
Sub-ISA
PMR[23] = 0 and
TFTDCK
PMR[5] = 1
PMR[23] = 0 and
TFTD0
PMR[7] = 1
PMR[23] = 0 and
TFTD12
PMR[13] = 1
GPIO
PMR[23] = 1 and
DOCCS#
PMR[7] = 0
PMR[23] = 1 and
IOCS1#
PMR[13] = 0
UART2
PMR[18] = 1 and
IRQ15
PMR[8] = 0
Internal Test
PMR[23] = 0 and
FP_VDD_ON
PMR[29] = 1
32581C
Alternate2
Signal
Configuration
FPCI_MON = 1
Sub-ISA
PMR[9] = 1 and
PMR[4] = 1
FPCI Monitoring
PMR[23] = 0 and
(PMR[27] = 1 or
FPCI_MON = 1)
3
TFT
PMR[23] = 1
PMR[23] = 1
PMR[23] = 1
Sub-ISA
PMR[23] = 1 and
PMR[7] = 1
PMR[23] = 1 and
PMR[13] = 1
IDE2
PMR[18] = 0 and
PMR[8] = 1
TFT
PMR[23] = 1
47
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