OXCF950_06 Datasheet, PDF (9/66 Pages) Oxford Semiconductor – low cost asynchronous 16-bit PC card or Compact Flash UART device

OXFORD SEMICONDUCTOR, INC.
OXCF950 rev B DATA SHEET
28 (E5)
30 (D5)
21 (F4)
20 (H4)
34 (C6)
35 (C4)
36 (B6)
33 (E4)
EEPROM
13 (H1)
14 (G2)
16 (G3)
15 (H2)
Miscellaneous Pins
18, 31
(G4, D6)
17 (H3)
Power and Ground²
39, 19, 8
(A5, E3, D3)
DS-0027 Feb 06
I
DSR#
Rx_Clk_In
I
RI#
Tx_Clk_In
O
XTLO
I
XTLI
O
LBCS#
O
OUT1#
I
A[5]
O
LBRD#²
O
RXRDY#
I
A[6]
O
LBWR#
O
TXRDY#
I
A[7]
O
LBRST²
O
OUT2#
I
A[4]
O
EE_CK
O
EE_CS
I
EE_DI
O
EE_DO
I/O MIO[1:0]
I
MODE
G
GND
the transmitter will complete the current character and enter
the idle mode until the CTS# pin is reasserted. Note: flow
control characters are transmitted regardless of the state of
the CTS# pin.
Active-low modem data-set-ready input. If automated DSR#
flow control is enabled, upon de-assertion of the DSR# pin,
the transmitter will complete the current character and enter
the idle mode until the DSR# pin is reasserted. Note: flow
control characters are transmitted regardless of the state of
the DSR# pin
External receiver clock for isochronous applications. The
Rx_Clk_In is selected when register CKS[1:0] = ’01’
Active-low modem Ring-indicator input
External transmitter clock. This clock can be used by the
transmitter (and indirectly by the receiver) when register
CKS[6] = ‘1’.
Crystal oscillator output
Crystal oscillator input or external clock pin. Frequency
1.8MHz -> 60MHz.
For 1.8 to 20 MHz, a crystal may be used. Above this range,
an external clock source is required.
Local Bus Mode : Active low local bus Chip select
C950 Mode: Active low OUT1
Normal Mode : Address bit 5
Local Bus Mode : Active-low local bus read enable
C950 Mode:Active low RXRDY
Normal Mode : Address bit 6
Local Bus Mode : Active-low local bus write enable
C950 Mode:Active low TXRDY
Normal Mode : Address bit 7
Local Bus Mode : Active high local bus Reset
C950 Mode:Active low OUT2
Normal Mode : Address bit 4
EEPROM clock. In normal operation the frequency of this is
XTLI input clock / 64. The clock is only active during
configuration following reset.
EEPROM active-high Chip Select.
EEPROM data in. This pin should be pulled up using 1-10k
resistor if an EEPROM is used, or pulled up/down depending
upon required stand-alone mode..
EEPROM data out.
User defined IO pins.
Note: that if enabled, MIO[1:0] can be used as an interrupt
inputs.
Local Bus mode select. Note Local Bus mode requires
indirect addressing, which is only supported by the PCMCIA
specification
‘0’ = Normal Mode (CF/PCMCIA compatible)
‘1’ = Local Bus Mode (PCMCIA compatible)
Ground (0 Volts). The GND pins should be tied to ground
External—Free Release
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