Configuration
AM4011
Page 4 - 18
ID 1022-1626, Rev. 1.0
P R E L I M I N A R Y
4.4.16
MMC Configuration Register
The MMC Configuration Register holds a series of bits defining the host COM port routing and
the MMC Serial port configuration.
4.4.17
IPMI Keyboard Control Style Interface
The host processor communicates with the MMC using two Keyboard Control Style interfaces,
which are defined in the IPMI specification. One interface is for the System Management Soft-
ware (SMS) used within an operating system, and one for the System Management Mode
(SMM) used only by the BIOS.
The KCS interface to the system management software is on the I/O location 0xCA2 and
0xCA3, and configured as regular ISA interrupt.
The KCS interface to the system management mode is on the I/O location 0xCA0 and 0XCA4,
and configured as SMI interrupt.
Table 4-23: MMC Configuration Register
REGISTER NAME
MMC CONFIGURATION REGISTER
ADDRESS
0x29C
BIT
NAME
DESCRIPTION
RESET
VALUE
ACCESS
7
MPGC
MMC program request
0 = No action
1 = Request MMC to program internal Flash from external Flash
0
R/W
6
MPGU
MMC enforce User Program Mode request
0 = No action
1 = Set MMC in User Program Mode (this bit is ignored if MMC is in
local programming mode)
0
R/W
5-4
Res.
Reserved
00
R
3
MCOMT
MMC Serial port configuration for debugging purposes
0 = MMC Serial port is connected to the mini connector on the front
panel (only for debugging purposes)
1 = MMC Serial port is isolated
1
R
2
MSCI
MMC Serial port configuration for Firmware update
0 = Host COM2 port is disable
1 = Host COM2 port is connected to MMC Serial port (this bit is
ignored if the MCOMT signal is 0)
0
R/W
1
MRST
MMC reset function
0 = MMC controller is running
1 = MMC controller is in reset state
0
R/W
0
MPGM
MMC program mode; select the Firmware update mode
0 = Normal operating mode
1 = Set MMC in Firmware update mode
0
R/W
Содержание AM4011
Страница 10: ...Preface AM4011 This page has been intentionally left blank Page x ID 1022 1626 Rev 1 0 P R E L I M I N A R Y...
Страница 16: ...Preface AM4011 This page has been intentionally left blank Page xvi ID 1022 1626 Rev 1 0 P R E L I M I N A R Y...
Страница 17: ...AM4011 Introduction ID 1022 1626 Rev 1 0 Page 1 1 Introduction Chapter 1 1 P R E L I M I N A R Y...
Страница 59: ...AM4011 Installation ID 1022 1626 Rev 1 0 Page 3 1 Installation Chapter 1 3 P R E L I M I N A R Y...
Страница 69: ...AM4011 Configuration ID 1022 1626 Rev 1 0 Page 4 1 Configuration Chapter 1 4 P R E L I M I N A R Y...