ox16cf950 ETC-unknow, ox16cf950 Datasheet - Page 18

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

CREADY
CWProt
RBVD1
RBVD2
RREADY
RWProt
5.5.4
This is an optional read/write register, implemented by the OXCF950, which the PCMCIA/CF card may use to distinguish
between similar cards installed in a system. This register is always written by the system before writing the card's Function
Configuration Index field in the Configuration Option register.
Field
Reserved
Copy Number
Socket Number
Reserved
OXFORD SEMICONDUCTOR LTD.
D7
Socket and Copy Register ‘SCR’ (Offset 0xFE)
D6
Copy Number
written by the host.
This bit is set (1) when the corresponding bit, RREADY, changes state. This bit may also be
written by the host.
This bit is set (1) when the corresponding bit, RWProt, changes state. This bit may also be
written by the host.
When read, this bit represents the internal state of the Battery Voltage Detect circuits which
would be on the BVD1 pin.
When this bit is written as 1 the corresponding CBVD1 bit is also written. When this bit is
written as 0, the CBVD1 bit is unaffected.
When read, this bit represents the internal state of the Battery Voltage Detect circuits which
would be on the BVD2 pin.
When this bit is written as 1 the corresponding CBVD2 bit is also written. When this bit is
wri t ten as 0, the CBVD2 bit is unaffected.
When read, this bit represents the internal state of the READY signal. This bit may also be
used to determine the state of READY as that pin has been relocated for use as Interrupt
Request on IO Cards.
When this bit is written as 1 the corresponding “changed” bit is also written. When this bit is
written as 0, the “changed” bit is unaffected.
When read, this bit represents the state of the WP signal. This signal may also be used to
determine the state of the Write Protect switch when pin 33 is being used for IOIS16#.
When this bit is written as 1 the corresponding “changed” bit is also written. When this bit is
written as 0, the “changed” bit is unaffected.
Description
This bit is reserved for future standardization. This bit must be set to zero (0) by software when
the register is written.
PCMCIA/CF cards that indicate in their CIS that they support more than one copy of identically
configured cards, should have a copy number (0 to MAX twin cards, MAX = n-1) written back
to the socket and Copy register.
This field indicates to the card that it is the n’th copy of the card installed in the system, which
is identically configured. The first card installed receives the value 0. This permits identical
cards designed to share a common set of I/O ports while remaining uniquely identifiable and
consecutively ordered.
This field indicates to the PCMCIA/CF card that it is located in the n’th socket. The first socket
is numbered o. This permits any cards designed to do so to share a common set of I/O ports
while remaining uniquely identifiable.
D5
Table 17: Socket and Copy Register
Table 16: Pin Replacement Register
D4
D3
D2
OXCF950 DATA SHEET V1.1
Socket Number
D1
Page 18
D0