
AMD Geode SC1200/SC1201 Processor Data Book
63
Signal Definitions
Revision 7.1
Table 3-8. Three-Signal/Group Multiplexing
EBGA
TEPBGA
Default
Alternate1
Alternate2
Signal
Configuration
Signal
Configuration
Signal
Configuration
Ball No.
Sub-ISA
Sub-ISA1
GPIO
F1
D9
IOR#
PMR[21] = 0 and
PMR[2] = 0
DOCR#
PMR[21] = 0 and
PMR[2] = 1
GPIO14
PMR[21] = 1 and
PMR[2] = 1
G3
A8
IOW#
DOCW#
GPIO15
Ball No.
GPIO
AC97
FPCI Monitoring
AL15
V31
GPIO16
PMR[0] = 0 and
FPCI_MON = 0
PC_BEEP
PMR[0] = 1 = 0 and
FPCI_MON = 0
F_DEVSEL
FPCI_MON = 1
Ball No.
GPIO
PCI2
Sub-ISA
H4
C9
GPIO19
PMR[9] = 0 and
PMR[4] = 0
INTC#
PMR[9] = 0 and
PMR[4] = 1
IOCHRDY
PMR[9] = 1 and
PMR[4] = 1
Ball No.
GPIO
Sub-ISA
TFT3
J4
A10
GPIO17
(PMR[23] = 0 and
PMR[5] = 0) or
(PMR[23] = 1 and
PMR[15] = 1 and
PMR[5] = 0)
IOCS0#
(PMR[23] = 0 and
PMR[5] = 1) or
(PMR[23] = 1 and
PMR[15] = 1 and
PMR[5] = 1)
TFTDCK
PMR[23] = 1 and
PMR[15] = 0
H3
A9
GPIO20
(PMR[23] = 0 and
PMR[7] = 0) or
(PMR[23] = 1 and
PMR[15] = 1 and
PMR[7] = 0)
DOCCS#
(PMR[23] = 0 and
PMR[7] = 1) or
(PMR[23] = 1 and
PMR[15] = 1 and
PMR[7] = 1)
TFTD0
PMR[23] = 1 and
PMR[15] = 0
H2
D10
GPIO1
(PMR[23] = 0 and
PMR[13] = 0) or
(PMR[23] = 1 and
PMR[15] = 1 and
PMR[13] = 0)
IOCS1#
(PMR[23] = 0 and
PMR[13] = 1) or
(PMR[23] = 1 and
PMR[15] = 1 and
PMR[13] = 1)
TFTD12
PMR[23] = 1 and
PMR[15] = 0
Ball No.
AB1
GPIO
Sub-ISA
AJ13
N31
AB1C
PMR[23] = 0 or
(PMR[23] = 1 and
PMR[15] = 1)
GPIO20
PMR[23] = 1 and
PMR[15] = 0 and
PMR[7] = 0
DOCCS#
PMR[23] = 1 and
PMR[15] = 0 and
PMR[7] = 1
AL12
N30
AB1D
PMR[23] = 0 or
(PMR[23] = 1 and
PMR[15] = 1)
GPIO1
PMR[23] = 1 and
PMR[15] = 0 and
PMR[13] = 0
IOCS1#
PMR[23] = 1 and
PMR[15] = 0 and
PMR[13] = 1
Ball No.
GPIO
UART2
IDE2
H30
AJ8
GPIO11
PMR[18] = 0 and
PMR[8] = 0
RI2#
PMR[18] = 1 and
PMR[8] = 0
IRQ15
PMR[18] = 0 and
PMR[8] = 1
Ball No.
Internal Test
TFT
Internal Test
AL16
V30
GXCLK
(PMR[29] = 0 and
PMR[23] = 0) or
(PMR[23] = 1 and
PMR[15] = 1)
FP_VDD_ON
PMR[23] = 1 and
PMR[15] = 0
TEST3
PMR[29] = 1 and
PMR[23] = 0
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.