Section 20
LPC Interface (LPC)
Rev. 1.00 Apr. 28, 2008 Page 621 of 994
REJ09B0452-0100
R/W
Bit Bit
Name
Initial
Value
Slave Host Description
4 FGA20E 0
R/W
Fast Gate A20 Function Enable
Enables or disables the fast Gate A20 function. When
the fast Gate A20 is disabled, the normal Gate A20
can be implemented by firmware controlling P81
output.
0: Fast Gate A20 function disabled
Other function (input/output) of pin P81 is enabled
The internal state of GA20 output is initialized to 1
1: Fast Gate A20 function enabled
GA20 pin output is open-drain (external pull-up
resistor (Vcc) required)
3 SDWNE 0
R/W
LPC Software Shutdown Enable
Controls LPC interface shutdown. For details of the
LPC shutdown function, and the scope of initialization
by an LPC reset and an LPC shutdown, see section
20.4.4, LPC Interface Shutdown Function (LPCPD).
0: Normal state, LPC software shutdown setting
enabled
[Clearing conditions]
•
Writing 0
•
LPC hardware reset or LPC software reset
•
LPC hardware shutdown release (rising edge of
LPCPD
signal)
1: LPC hardware shutdown state setting enabled
Hardware shutdown state when
LPCPD
signal is
low level
[Setting condition]
Writing 1 after reading SDWNE = 0
Summary of Contents for H8S/2100 Series
Page 2: ...Rev 1 00 Apr 28 2008 Page ii of xxvi...
Page 54: ...Section 1 Overview Rev 1 00 Apr 28 2008 Page 28 of 994 REJ09B0452 0100...
Page 92: ...Section 2 CPU Rev 1 00 Apr 28 2008 Page 66 of 994 REJ09B0452 0100...
Page 158: ...Section 5 Interrupt Controller Rev 1 00 Apr 28 2008 Page 132 of 994 REJ09B0452 0100...
Page 244: ...Section 8 8 Bit PWM Timer PWMU Rev 1 00 Apr 28 2008 Page 218 of 994 REJ09B0452 0100...
Page 330: ...Section 10 16 Bit Timer Pulse Unit TPU Rev 1 00 Apr 28 2008 Page 304 of 994 REJ09B0452 0100...
Page 416: ...Section 13 8 Bit Timer TMR Rev 1 00 Apr 28 2008 Page 390 of 994 REJ09B0452 0100...
Page 612: ...Section 18 I 2 C Bus Interface IIC Rev 1 00 Apr 28 2008 Page 586 of 994 REJ09B0452 0100...
Page 706: ...Section 20 LPC Interface LPC Rev 1 00 Apr 28 2008 Page 680 of 994 REJ09B0452 0100...
Page 752: ...Section 21 FSI Interface Rev 1 00 Apr 28 2008 Page 726 of 994 REJ09B0452 0100...
Page 774: ...Section 23 RAM Rev 1 00 Apr 28 2008 Page 748 of 994 REJ09B0452 0100...
Page 1008: ...Section 28 Electrical Characteristics Rev 1 00 Apr 28 2008 Page 982 of 994 REJ09B0452 0100...
Page 1020: ...Rev 1 00 Apr 28 2008 Page 994 of 994 REJ09B0452 0100...
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Page 1024: ...H8S 2117R Group Hardware Manual...