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參數(shù)資料
| 型號： | OX16CF950 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | LOW COST ASYNCHRONOUS 16 BIT CARD |
| 中文描述： | 低成本異步16位卡 |
| 文件頁數(shù)： | 16/60頁 |
| 文件大?。?/td> | 753K |
| 代理商： | OX16CF950 |
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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.
D7
D6
D5
D4
SRESET
LevIREQ
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.
LevIREQ
1
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.
Page 16
OXCF950 DATA SHEET V1.1
OXFORD SEMICONDUCTOR LTD.
Configuration Options Register ‘COR’ (offset 0xF8)
D3
D2
D1
D0
Function Configuration Index
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.
D7
D6
D5
D4
Changed
SigChg
IOIs8
RFU
Field
Type
Description
Changed
R
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.
SigChg
1
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#.
D3
Audio
D2
D1
Intr
D0
PwrDwn
IntrAck
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