CS5530A Datasheet

  • CS5530A

  • National Semiconductor [Geode CS5530A I/O Companion Multi-F...

  • 3879.27KB

  • NSC

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Geode鈩?CS5530A
Functional Description
(Continued)
Geode鈩?/div>
CS5530A
1
ISA Control
2
ISA Device
SD[15:0]
GPIO[7:4]/SA[23:20]
SA[19:16]
SA[15:0]/SD[15:0]
INTR
10K
3
SA_LATCH/SA_DIR
D
Q
SA[23:20]
SA[19:16]
SA[15:0]
74F373x2
G
OC
Notes:
1. F0 Index 43h[2] controls GPIO[7:4]/SA[23:20].
2. These signals are: MEMW#, MEMR#, IOR#, IOW#, TC, AEN, DREQ[7:5, 3:0], DACK[7:5, 3:0]#, MEMCS16#, ZEROWS#,
SBHE#, IOCS16#, IOCHRDY, ISACLK.
3. This resistor is used at boot time to determine the mode of the ISA bus.
Figure 3-10. Limited ISA Mode
ISA Control
2
FP_VSYNC_OUT/SMEMR#
FP_HSYNC_OUT/SMEMW#
3.3V/5V
330
鈩?/div>
FP_DATA17/MASTER#
1
SMEMR#
SMEMW#
MASTER#
SA[23:20]
SA[19:16]
SA[15:0]
5.0V
GPIO[7:4]/SA[23:20]
SA[19:16]
FP_DATA[15:0]/SA[15:0]
Geode鈩?/div>
CS5530A
INTR
10K
3
SD[15:0]
ISA Master
SA[15:0]_SD[15:0]/SD[15:0]
Notes:
1. When strapped for ISA Master mode, GPIO[7:4]/SA[23:20] are set to SA[23:20] and the settings in F0 Index 43h[2] are invalid.
2. These signals are: MEMW#, MEMR#, IOR#, IOW#, TC, AEN, DREQ[7:5, 3:0], DACK[7:5, 3:0]#, MEMCS16#, ZEROWS#,
SBHE#, IOCS16#, IOCHRDY, ISACLK.
3. This resistor is used at boot time to determine the mode of the ISA bus.
Figure 3-11. ISA Master Mode
Revision 1.1
91
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