4-10
Theory of Operation
A simplified block diagram of the M1523 chip is shown in Figure 4-4 and the associated
pinouts are provided in Figure 4-5.
4.3.2.1 ALI M1523 (PCI-ISA Bridge)
The M1523 is a bridge between PCI and ISA bus, providing full PCI and ISA compatible functions. The
M1523 has Integrated System Peripherals (ISP) on-chip and provides advanced features in the DMA
controller. This chip contains the keyboard controller, real-time clock and IDE master controller. This
chip also supports the Advanced Programmable Interrupt controller (APIC) interface.
One eight-byte bidirectional line buffer is provided for ISA/DMA master memory read/writes. One 32-bit
wide posted-write buffer is provided for PCI memory write cycles to the ISA bus. It also supports a PCI to
ISA IRQ routing table and level-to-edge trigger transfer.
The chip has two extra IRQ lines and one programmable chip select for motherboard Plug-and-Play
functions. The interrupt lines can be routed to any of the available ISA interrupts.
The on-chip IDE controller supports two IDE connectors for up to four IDE devices providing an interface
for IDE hard disks and CD-ROMs. The ATA bus pins are dedicated to improve the performance of IDE
master.
The M1523 supports the Super Green feature for Intel and Intel compatible CPUs. It implements
programmable hardware events, software event and external switches (for suspend/turbo/ring-in). The
M1523 provides CPU clock control (STPCLKJ). The STPCLKJ can be active (low) or inactive (high) in
turn by throttling control.
Summary of Contents for Extensa 600 Series
Page 46: ......
Page 55: ...Theory of Operation 4 9 Figure 4 3 M1521 Pin Assignments ...
Page 61: ...Theory of Operation 4 15 Figure 4 7 M6377 Chip Pinouts ...
Page 65: ...Theory of Operation 4 19 Figure 4 9 PCMCIA Controller Simplified Block Diagram ...
Page 84: ......
Page 112: ...6 28 Field Service Figure 6 24 Removing Replacing the FIR Audio Board ...
Page 118: ......
Page 127: ...Model 60x Maintenance Data A 9 Figure A 4 Motherboard PWB Logic Diagrams Sheet 1 of 32 ...
Page 128: ...A 10 Model 60x Maintenance Data Figure A 4 Motherboard PWB Logic Diagrams Sheet 2 of 32 ...
Page 129: ...Model 60x Maintenance Data A 11 Figure A 4 Motherboard PWB Logic Diagrams Sheet 3 of 32 ...
Page 130: ...A 12 Model 60x Maintenance Data Figure A 4 Motherboard PWB Logic Diagrams Sheet 4 of 32 ...
Page 131: ...Model 60x Maintenance Data A 13 Figure A 4 Motherboard PWB Logic Diagrams Sheet 5 of 32 ...
Page 132: ...A 14 Model 60x Maintenance Data Figure A 4 Motherboard PWB Logic Diagrams Sheet 6 of 32 ...
Page 133: ...Model 60x Maintenance Data A 15 Figure A 4 Motherboard PWB Logic Diagrams Sheet 7 of 32 ...
Page 134: ...A 16 Model 60x Maintenance Data Figure A 4 Motherboard PWB Logic Diagrams Sheet 8 of 32 ...
Page 135: ...Model 60x Maintenance Data A 17 Figure A 4 Motherboard PWB Logic Diagrams Sheet 9 of 32 ...
Page 136: ...A 18 Model 60x Maintenance Data Figure A 4 Motherboard PWB Logic Diagrams Sheet 10 of 32 ...
Page 137: ...Model 60x Maintenance Data A 19 Figure A 4 Motherboard PWB Logic Diagrams Sheet 11 of 32 ...
Page 138: ...A 20 Model 60x Maintenance Data Figure A 4 Motherboard PWB Logic Diagrams Sheet 12 of 32 ...
Page 139: ...Model 60x Maintenance Data A 21 Figure A 4 Motherboard PWB Logic Diagrams Sheet 13 of 32 ...
Page 140: ...A 22 Model 60x Maintenance Data Figure A 4 Motherboard PWB Logic Diagrams Sheet 14 of 32 ...
Page 141: ...Model 60x Maintenance Data A 23 Figure A 4 Motherboard PWB Logic Diagrams Sheet 15 of 32 ...
Page 142: ...A 24 Model 60x Maintenance Data Figure A 4 Motherboard PWB Logic Diagrams Sheet 16 of 32 ...
Page 143: ...Model 60x Maintenance Data A 25 Figure A 4 Motherboard PWB Logic Diagrams Sheet 17 of 32 ...
Page 144: ...A 26 Model 60x Maintenance Data Figure A 4 Motherboard PWB Logic Diagrams Sheet 18 of 32 ...
Page 145: ...Model 60x Maintenance Data A 27 Figure A 4 Motherboard PWB Logic Diagrams Sheet 19 of 32 ...
Page 146: ...A 28 Model 60x Maintenance Data Figure A 4 Motherboard PWB Logic Diagrams Sheet 20 of 32 ...
Page 147: ...Model 60x Maintenance Data A 29 Figure A 4 Motherboard PWB Logic Diagrams Sheet 21 of 32 ...
Page 148: ...A 30 Model 60x Maintenance Data Figure A 4 Motherboard PWB Logic Diagrams Sheet 22 of 32 ...
Page 149: ...Model 60x Maintenance Data A 31 Figure A 4 Motherboard PWB Logic Diagrams Sheet 23 of 32 ...
Page 150: ...A 32 Model 60x Maintenance Data Figure A 4 Motherboard PWB Logic Diagrams Sheet 24 of 32 ...
Page 151: ...Model 60x Maintenance Data A 33 Figure A 4 Motherboard PWB Logic Diagrams Sheet 25 of 32 ...
Page 152: ...A 34 Model 60x Maintenance Data Figure A 4 Motherboard PWB Logic Diagrams Sheet 26 of 32 ...
Page 153: ...Model 60x Maintenance Data A 35 Figure A 4 Motherboard PWB Logic Diagrams Sheet 27 of 32 ...
Page 154: ...A 36 Model 60x Maintenance Data Figure A 4 Motherboard PWB Logic Diagrams Sheet 28 of 32 ...
Page 155: ...Model 60x Maintenance Data A 37 Figure A 4 Motherboard PWB Logic Diagrams Sheet 29 of 32 ...
Page 156: ...A 38 Model 60x Maintenance Data Figure A 4 Motherboard PWB Logic Diagrams Sheet 30 of 32 ...
Page 157: ...Model 60x Maintenance Data A 39 Figure A 4 Motherboard PWB Logic Diagrams Sheet 31 of 32 ...
Page 158: ...A 40 Model 60x Maintenance Data Figure A 4 Motherboard PWB Logic Diagrams Sheet 32 of 32 ...
Page 212: ...Printed in U S A ...
