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AMD Geode™ SC2200 Processor Data Book 49
Signal Definitions
32580B
Internal Test Internal Test TFT
V30 GXCLK PMR[23] = 0 and
PMR[29] = 0
TEST3 PMR[23] = 0 and
PMR[29] = 1
FP_VDD_ON PMR[23] = 1
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.
Table 3-6. Three-Signal/Group Multiplexing (Continued)
Ball No.
Default Alternate1 Alternate2
Signal Configuration Signal Configuration Signal Configuration
Table 3-7. Four-Signal/Group Multiplexing
Ball
No.
Default Alternate1 Alternate2 Alternate3
Signal Configuration Signal Configuration Signal Configuration Signal Configuration
GPIO UART2 IDE2 Internal Test
C30 GPIO7 PMR[17] = 0
and
PMR[8] = 0
RTS2# PMR[17] = 1
and
PMR[8] = 0
IDE_DACK1# PMR[17] = 0
and
PMR[8] = 1
SDTEST0 PMR[17] = 1
and
PMR[8] = 1
C31 GPIO8 CTS2# IDE_DREQ1 SDTEST4
D28 GPIO6 PMR[18] = 0
and
PMR[8] = 0
DTR2#/BOUT2 PMR[18] = 1
and
PMR[8] = 0
IDE_IOR1# PMR[18] = 0
and
PMR[8] = 1
SDTEST5 PMR[18] = 1
and
PMR[8] = 1
C28 GPIO9 DCD2# IDE_IOW1# SDTEST2
B29 GPIO10 DSR2# IDE_IORDY1 SDTEST1