ox16cf950 ETC-unknow, ox16cf950 Datasheet - Page 48

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

7.5
Zone 3 allows the UART to be pre-configured, prior to any CF/PCMCIA accesses. This is very useful when the UART needs to
run with (typically generic) device drivers and these drivers are not capable of utilising the enhanced features/modes of the
UART (e.g. 950 mode) that are required for high performance. By using function access, the UART registers can be accessed
(setup) via the EEPROM to customize the UART features before control is handed to the device drivers.
Each 8-bit access is equivalent to accessing the UART function through IO space (addresses 0 to 7), with the exception that a
function read access does not return any data (it is discarded). The UART function behaves as though these function accesses
via the EEPROM were corresponding CF/PCMCIA access.
Each entry for zone 3 comprises of 2 16-bit words. The format is as shown.
OXFORD SEMICONDUCTOR LTD.
Zone 3 : Function Access (UART)
14:12
Bits
14:8
Bits
10:8
Bits
14:8
7:0
7:0
7:0
15
15
11
15
Table 43: Zone 3 (second WORD) format
Table 42: Zone 3 (first WORD) format
Local Register address (in IO space). Valid address range is
1’1 = There is another configuration WORD to follow for the
Table 41: Word format for Zone 2
‘0’ = There are no more configuariton WORDs to follow in
Zone 2. Move to next available zone or end EEPROM
program if no more zones are enabled in the header.
Field is unused for function access READS (set to 0)
2
1
‘1’ = another function access WORD pair to follow
nd
st
WORD (of WORD pair)
WORD (of WORD pair)
8-bit value of the register to be programmed
‘0’ = no more function access WORD pairs
IO address to access (valid values 0 to 7)
Data to be written to specified addresses.
Local Configuration Registers
1 = Function write access
0 = Function read access
Reserved (write 0’s)
Reserved (write 0’s)
Reserved (write 0’s)
Description
Description
Description
Value = 1
8 to 15
OXCF950 DATA SHEET V1.1
Page 48