Sundance Spas ST201 User Manual
Page 129
129
Sundance Technology
ST201
PRELIMINARY draft 2
CONFIGPARM
Class....................EEPROM Data Format
Base Address ......0x00, address written to EepromCtrl register
Address Offset .....0x00
Access Mode .......Read Only
Width ...................16 bits
This is loaded into the ST201 and controls various hardware functions related to PCI bus operation.
ConfigParm has a default value of 2ab0h, but is normally overwritten by the value in EEPROM. The default
values specify:
FastBackToBack = 0
Lower1Meg = 0
DisableMemBase = 0
D3ColdPme = 0
D1Support = 1
D2Support = 1
PmeEn = 0
MinGnt = 0101b (2.5 us)
MaxLat = 00101b (2.5 us).
BIT
BIT NAME
BIT DESCRIPTION
0
FastBackToBack
Determines the value for the FastBackToBack bit in the ConfigStatus
register.
1
Lower1Meg
Provides the value for MemMapType[0] in the MemBaseAddress regis-
ter.
2
DisableMemBase
When set, disables the MemBaseAddr register. This bit causes Mem-
BaseAddr to read back as zeroes, appearing as if it is not implemented
by the adapter.
3
D3ColdPme
Provides the value returned in bit 15 of the PowerMgmtCap register.
This bit, when set, indicates that the adapter is capable of signaling
wake from the D3cold state.
4
D1Support
Provides the value returned in D1Support and also bit 12 in the Power-
MgmtCap register.
5
D2Support
Provides the value returned in D2Support and also bit 13 in the Power-
MgmtCap register.
6
PmeEn
When this bit is set, the ST201 is allowed to report wake events on the
PMEN signal.
10..7
MinGnt
Determines the value returned in bits [4..1] of the MinGnt register.
15..11
MaxLat
Determines the value returned in bits [5..1] of the MaxLat register.