ox16cf950 ETC-unknow, ox16cf950 Datasheet - Page 16

• Manufacturer Part Number: ox16cf950
• Description: Cost Asynchronous Card
• Manufacturer: ETC-unknow

5.5.1
The configuration options register is used to configure PCMCIA/CF cards that have programmable address decoders. Once the
card’s client driver has successfully parsed the CIS, it will attempt to obtain system resources, as requested by the CIS. On
completion of this it assigns the resources to the card via the COR. The COR format and description is given in Table 14.
SRESET
Field
SRESET
LevIREQ
Function Configuration Index
Note 1
The default tuples in the CIS tell the host that only level type interrupts are supported to allow lowest power consumption. The
OXCF950 supports both level and pulse type interrupts, and if a particular manufacturer requires to use pulse type, or both, then
the CIS can be modified using the external EEPROM.
5.5.2
The Configuration and Status Register is an optional register, supported by the OXCF950. The register allows additional control
over a function’s configuration and reports status related to the function’s configuration.
Field
Changed
SigChg
OXFORD SEMICONDUCTOR LTD.
Changed
D7
D7
1
1
Configuration Options Register ‘COR’ (offset 0xF8)
Configuration Status Register ‘CSR’ (Offset 0xFA)
LevIREQ
SigChg
D6
D6
Type
R/W
R/W
R/W
Type
R
R/W
IOIs8
D5
D5
Table 14: Configuration Option Register
Description
Software reset
Setting this field to ‘1’ places the card in the reset state. This is equivalent to
setting the RESET signal (on pin) except this SRESET field is not reset.
Returning this field to ‘0’ leaves the card in the same un-configured, reset state
as the card would be following a power-up and hard reset.
Level Mode IREQ#
Setting this field to ‘1’ enables level type interrupts
Setting this field to ‘0’ enables pulse type interrupt s
Configuration Index
The host sets this field to the value of the Configuration Entry Number field of a
Configuration Table Entry tuple as defined in the CIS. On setting the non-zero
value in this field the function IO i s enabled and IO accesses are allowed. When
the field is set to zero (e.g. after a hard reset) the card will be configured to
memory only mode and all IO accesses will be ignored by the card.
Description
If a PCMCIA/CF card is using the I/O interface, the function’ s Pin Replacement
register is present and one or more of the state change signals in the Pin
Replacement Register are set to one(1), or one Event bits in the Extended Status
Register are set (1) and the corresponding Enable bit is set (1), the function shall
set this field to one (1).
If a PCMCIA/CF card is not using the I/O interface or the function’s Pin
Replacement register is not present, this field is undefined and should be
ignored.
This field serves as a gate for STSCHG#
If a PCMCIA/CF card is using the I/O interface and both the Changed and
SigChg fields are set to one (1), the function shall assert STSCHG#.
RFU
D4
D4
Function Configuration Index
Audio
D3
D3
PwrDwn
D2
D2
OXCF950 DATA SHEET V1.1
D1
D1
Intr
IntrAck
Page 16
D0
D0