LPC47N237-MD SMSC [SMSC Corporation], LPC47N237-MD Datasheet - Page 5

• Manufacturer Part Number: LPC47N237-MD
• Description: 3.3V I/O CONTROLLER FOR PORT REPLICATORS AND DOCKING STATIONS
• Manufacturer: SMSC [SMSC Corporation]

3.3v I/O Controller for Port Replicators and Docking Stations
10.1
10.2
Chapter 11
11.1
Chapter 12
12.1
12.2
12.3
12.4
Chapter 13
13.1
13.2
13.3
Chapter 14
Chapter 15
15.1
15.2
15.3
15.4
15.5
Chapter 16
16.1
16.2
Chapter 17
17.1
SMSC DS – LPC47N237
10.1.1
10.2.1
11.1.1
11.1.2
11.1.3
11.1.4
11.1.5
11.1.6
11.1.7
15.1.1
15.1.2
15.1.3
15.1.4
15.1.5
15.1.6
15.1.7
15.1.8
15.1.9
15.1.10
15.3.1
15.4.1
15.4.2
15.4.3
15.4.4
15.4.5
Write Byte..........................................................................................................................................................80
Read Byte..........................................................................................................................................................80
UART Power Management ............................................................................................................ 66
Parallel Port Power Management .................................................................................................. 66
Timing Diagrams For SER_IRQ Cycle .......................................................................................... 68
Overview ........................................................................................................................................ 72
nCLKRUN for Serial IRQ ............................................................................................................... 72
nCLKRUN for nLDRQ .................................................................................................................... 72
Using nCLKRUN ............................................................................................................................ 72
Description ..................................................................................................................................... 75
GPIO Control.................................................................................................................................. 75
GPIO Operation ............................................................................................................................. 76
SMBus Slave Controller................................................................................................................. 79
SMBus Isolation Logic ................................................................................................................... 82
SMBus Controlled GPIOs .............................................................................................................. 83
SMBus GPIO Registers ................................................................................................................. 84
Operation of SMBus Interrupt ........................................................................................................ 85
Runtime Registers Block Summary ............................................................................................... 89
Runtime Registers Block Description ............................................................................................ 89
Configuration Access Ports............................................................................................................ 91
Exit Auto Powerdown ..........................................................................................................................66
Exit Auto Powerdown ..........................................................................................................................67
SER_IRQ Cycle Control ......................................................................................................................69
SER_IRQ Data Frame ........................................................................................................................69
Stop Cycle Control ..............................................................................................................................70
Latency................................................................................................................................................70
EOI/ISR Read Latency........................................................................................................................70
AC/DC Specification Issue ..................................................................................................................70
Reset and Initialization ........................................................................................................................71
SMBus Pins.........................................................................................................................................79
Bus Protocols ......................................................................................................................................80
Slave Address .....................................................................................................................................80
Invalid Protocol Response Behavior....................................................................................................81
General Call Address Response .........................................................................................................81
Slave Device Time-Out .......................................................................................................................81
Stretching the SCLK Signal.................................................................................................................81
SMBus Timing.....................................................................................................................................81
Bus Reset Sequence ..........................................................................................................................81
SMBus Alert Response .......................................................................................................................82
GPIO Pins ...........................................................................................................................................84
Direction Registers..............................................................................................................................84
Output Type Registers ........................................................................................................................84
Data Registers ....................................................................................................................................84
GPIO Mask Registers .........................................................................................................................84
GPIO Change Status Register ............................................................................................................85
Serial IRQ........................................................................................................................ 68
PCI CLKRUN Support .................................................................................................. 72
LPC General Purpose I/O .............................................................................................. 75
PME Support................................................................................................................... 78
SMBus GPIO Block ........................................................................................................ 79
Runtime Registers........................................................................................................... 89
Configuration .................................................................................................................. 91
DATASHEET
Page 5
Revision 0.3 (10-26-04)