Min_gnt, Interrupt pin, Interrupt line – Avago Technologies LSI53C825AE User Manual
Page 101: 0x3c, Register: 0x3c, Register: 0x3d, Register: 0x3e
Configuration Registers
4-13
Register: 0x3C
Interrupt Line
Read/Write
IL
Interrupt Line
[7:0]
This register is used to communicate interrupt line routing
information. POST software will write the routing
information into this register as it initiates and configures
the system. The value in this register tells which input of
the system interrupt controller(s) the device’s interrupt pin
has been connected to. Values in this register are
specified by system architecture.
Register: 0x3D
Interrupt Pin
Read Only
IP[7:0]
Interrupt Pin
[7:0]
This register tells which interrupt pin the device uses. Its
value is set to 0x01, for the INTA/ signal.
Register: 0x3E
Min_Gnt
Read Only
MG
Min_Gnt
[7:0]
This register is used to specify the desired settings for
latency timer values. Min_Gnt is used to specify how long
a burst period the device needs. The value specified in
these registers is in units of 0.25 microseconds. The
LSI53C25A sets this register to 0x11.
7
0
IL
0
0
0
0
0
0
0
0
7
0
IP
0
0
0
0
0
0
0
1
7
0
MG
0
0
0
1
0
0
0
1