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Section 19 LPC Interface (LPC)
Rev. 1.00 Mar. 12, 2008 Page 665 of 1178
REJ09B0403-0100
Section 19 LPC Interface (LPC)
This LSI has an on-chip LPC interface.
The LPC includes three register sets, each of which comprises data and status registers, control
register, the fast Gate A20 logic circuit, and the host interrupt request circuit.
The LPC performs serial transfer of cycle type, address, and data, synchronized with the 33 MHz
PCI clock. It uses four signal lines for address/data and one for host interrupt requests. This LPC
module supports I/O read and I/O write cycle transfers. It is also provided with power-down
functions that can control the PCI clock and shut down the LPC interface.
19.1 Features
•
Supports LPC interface I/O read and I/O write cycles
Uses four signal lines (LAD3 to LAD0) to transfer the cycle type, address, and data.
Uses three control signals: clock (LCLK), reset (
LRESET
), and frame (
LFRAME
).
•
Three register sets comprising data and status registers
The basic register set comprises three bytes: an input register (IDR), output register (ODR),
and status register (STR).
I/O addresses from H'0000 to H'FFFF are selected for channels 1 to 3.
A fast Gate A20 function is provided for channel 1.
For channel 3, sixteen bidirectional data register bytes can be manipulated in addition to
the basic register set.
•
Supports SCIF
The LPC interface is connected to the SCIF, allowing direct control of the SCIF by the
LPC host.
Содержание H8S Family
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Страница 152: ...Section 5 Interrupt Controller Rev 1 00 Mar 12 2008 Page 104 of 1178 REJ09B0403 0100...
Страница 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Страница 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
Страница 476: ...Section 12 Watchdog Timer WDT Rev 1 00 Mar 12 2008 Page 428 of 1178 REJ09B0403 0100...
Страница 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Страница 588: ...Section 15 Serial Communication Interface with FIFO SCIF Rev 1 00 Mar 12 2008 Page 540 of 1178 REJ09B0403 0100...
Страница 632: ...Section 17 Synchronous Serial Communication Unit SSU Rev 1 00 Mar 12 2008 Page 584 of 1178 REJ09B0403 0100...
Страница 712: ...Section 18 I2 C Bus Interface IIC Rev 1 00 Mar 12 2008 Page 664 of 1178 REJ09B0403 0100...
Страница 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Страница 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
Страница 964: ...Section 24 RAM Rev 1 00 Mar 12 2008 Page 916 of 1178 REJ09B0403 0100...
Страница 1066: ...Section 25 Flash Memory Rev 1 00 Mar 12 2008 Page 1018 of 1178 REJ09B0403 0100...
Страница 1098: ...Section 26 Boundary Scan JTAG Rev 1 00 Mar 12 2008 Page 1050 of 1178 REJ09B0403 0100...
Страница 1168: ...Section 30 Platform Environment Control Interface PECI Rev 1 00 Mar 12 2008 Page 1120 of 1178 REJ09B0403 0100...
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