IFHSTL0A_020020040200
Rev. 1.00, 05/04, page 367 of 544
Section 15 Host Interface (LPC)
This LSI has an on-chip LPC interface.
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 only I/O read cycle and I/O write cycle transfers.
It is also provided with power-down functions that can control the PCI clock and shut down the
host interface.
15.1 Features
•
Supports LPC interface I/O read cycles 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
).
•
Has 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).
Channels 1 and 2 have fixed I/O addresses of H'60/H'64 and H'62/H'66, respectively. A fast
A20 gate function is also provided.
The I/O address can be set for channel 3. Sixteen bidirectional data register bytes can be
manipulated in addition to the basic register set.
•
Supports SERIRQ
Host interrupt requests are transferred serially on a single signal line (SERIRQ).
On channel 1, HIRQ1 and HIRQ12 can be generated.
On channels 2 and 3, SMI, HIRQ6, and HIRQ9 to HIRQ11 can be generated.
Operation can be switched between quiet mode and continuous mode.
The
CLKRUN
signal can be manipulated to restart the PCI clock (LCLK).
•
Eleven interrupt sources
The LPC module can be shut down by inputting the
LPCPD
signal.
Three pins,
PME
,
LSMI
, and LSCI, are provided for general input/output.
Содержание H8S/2111B
Страница 2: ...Rev 1 00 05 04 page ii of xxxiv...
Страница 8: ...Rev 1 00 05 04 page viii of xxxiv...
Страница 22: ...Rev 1 00 05 04 page xxii of xxxiv...
Страница 30: ...Rev 1 00 05 04 page xxx of xxxiv...
Страница 84: ...Rev 1 00 05 04 page 50 of 544...
Страница 100: ...Rev 1 00 05 04 page 66 of 544...
Страница 126: ...Rev 1 00 05 04 page 92 of 544...
Страница 180: ...Rev 1 00 05 04 page 146 of 544...
Страница 216: ...Rev 1 00 05 04 page 182 of 544...
Страница 254: ...Rev 1 00 05 04 page 220 of 544...
Страница 268: ...Rev 1 00 05 04 page 234 of 544...
Страница 382: ...Rev 1 00 05 04 page 348 of 544...
Страница 462: ...Rev 1 00 05 04 page 428 of 544...
Страница 464: ...Rev 1 00 05 04 page 430 of 544...
Страница 488: ...Rev 1 00 05 04 page 454 of 544...
Страница 496: ...Rev 1 00 05 04 page 462 of 544...
Страница 574: ...Rev 1 00 05 04 page 540 of 544...
Страница 581: ......
Страница 582: ...H8S 2111B Hardware Manual...