OXCFU950_07 Datasheet, PDF (20/74 Pages) Oxford Semiconductor – USB/UART multi-function 16-bit PC Card device

OXFORD SEMICONDUCTOR, INC.
0x16
Interrupt Status Register
Bits
Description
7
Reserved
6
Read: USB fast IRQ status
Write: Setting this bit to ‘1’ clears the USB fast IRQ.
5
This bit reflects the state of the USB interrupt
4
This bit reflects the state of the UART interrupt
3
MIO3. This bit reflects the state of the internal MIO[3]
2
MIO2. This bit reflects the state of the internal MIO[2]
1
MIO1. This bit reflects the state of the internal MIO[1]
0
MIO0. This bit reflects the state of the internal MIO[0]
0x17
Soft USB Reset & Clock Enable Register
Bits
Description
7:6
Reserved
5
0—selects USB OVER_CURRENT signal is active-high input
1—selects USB OVER_CURRENT signal is active-low input
4
0—selects normal MIO3 functions
1—selects MIO3 as OVER_CURRENT (input) signal
3
0—selects USB PORT_POWER signal is active-high output
1—selects USB PORT_POWER signal is active-low output
2
0—selects normal MIO2 functions
1—selects MIO2 as USB PORT_POWER (output) signal
1
Active-high clock enable for USB host controller
0
Active-high soft reset for USB host controller
0x18
Soft UART Reset & Clock Enable Register
Bits
Description
7:2
Reserved
1
Active high clock enable for UART
0
Active high soft reset for UART
0x1A
EEPROM Clock Control Register
Bits
Description
7:1
Reserved
0
EEPROM clock enable
0x1B
Alternate I/O Base Control Register
Bits
Description
7:2
Reserved
1
Select alternate I/O base address for USB
0
Select alternate I/O base address for UART
DS-0023 February 2007
External—Free Release
OXCFU950 DATA SHEET
Read/Write
EEPROM
Host
Access
-
R
-
R/W
Reset
0
0
-
R
0
-
R
0
-
R
X
-
R
X
-
R
X
-
R
X
Read/Write
EEPROM ^Host
Access
-
R
W
R/W
Reset
00
0
W
R/W
0
W
R/W
0
W
R/W
0
W
R/W
0
W
R/W
0
Read/Write
EEPROM ^Host
Access
-
R
W
R/W
W
R/W
Reset
000000
1
0
Read/Write
EEPROM ^Host
Access
-
R
W
R/W
Reset
0000000
1
Read/Write
EEPROM ^Host
Access
-
R
W
R/W
W
R/W
Reset
000000
0
0
Page 20 of 74