OX16CF950 datasheet(16/60 Pages) ETC

16 / 60 page

Page 16

OXCF950 DATA SHEET V1.1

OXFORD SEMICONDUCTOR LTD.

5.5.1

Configuration Options Register ‘COR’ (offset 0xF8)

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

LevIREQ

Function Configuration Index

Field

Type

Description

SRESET

R/W

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.

LevIREQ1

R/W

Level Mode IREQ#

Setting this field to ‘1’ enables level type interrupts

Setting this field to ‘0’ enables pulse type interrupts

Function Configuration Index

R/W

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 is 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.

Table 14: Configuration Option Register

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

Configuration Status Register ‘CSR’ (Offset 0xFA)

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.

Changed

SigChg

IOIs8

RFU

Audio

PwrDwn

Intr

IntrAck

Field

Type

Description

Changed

If a PCMCIA/CF card is using the I/O interface, the function’s Pin Replacement

Replacement Register are set to one(1), or one Event bits in the Extended Status

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.

SigChg1

R/W

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#.

OX16CF950 Datasheet(PDF) 16 Page - List of Unclassifed Manufacturers

OX16CF950 Datasheet(HTML) 16 Page - List of Unclassifed Manufacturers

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

Datasheet Download

Link URL