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3 P
IN
D
ESCRIPTIONS
Data Sheet Revision 1.0
Page 5
OXFW900
OXFORD SEMICONDUCTOR LTD.
1394 PHY-LINK interface
104, 105, 108, 109, 110, 111, 115,
116
117,118
120
122
102
103
ARMexternal interface
2, 3, 4, 5, 6, 7, 10, 11, 12, 13, 14,
15, 18, 19, 20, 21
35, 36, 37, 40, 41, 42, 43, 44, 45,
48, 49, 50, 51, 52, 53, 54, 60
25, 26, 29, 30
Dir
1
I/O
Name
PD[7:0]
Description
Phy-Link Data Bus
I/O
I
O
IU
O
CTL[1:0]
PHYCLK
LREQ
LINKON
LPS
Phy-Link Control Bus
49.152 MHz clock sourced by PHY
Link Request
Requests link to power up when in a low power mode
Indicates to phy that link is powered and ready
T_I/O
D[15:0]
ARMexternal data bus
T_O
A[16:0]
ARMexternal address bus
T_O
CS#[3:0]
ARMexternal chip selects. CS0#is always used for program
ROM.
ARMexternal output enable. Active when reading data from
external devices including programROM
Byte Write enables. For future expansion
Write Enable. Active when writing to external devices
‘1’ = 16 bit external ROM ‘0’ = 8 bit external ROM
(pulldown)
External ARMinterrupt
31
T_O
OE#
32, 33
34
62
T_O
T_O
ID
BWR#[1:0]
WE#
WIDTH16
61
T_IU
INT#
IDE interface
65, 66, 69, 70, 71, 72, 73, 74, 77,
78, 79, 80, 81, 82, 85, 86
97, 98, 99
100, 101
63
T_I/O
ID[15:0]
IDE data bus
T_O
T_O
T_O
IA[2:0]
ICS#[1:0]
IDE_OE#[
IDE address bus
IDE chip select. Selects IDE drive 0 or 1
IDE output enable. Only used when external buffering is
required to drive IDE data bus
IDE interface reset
IDE interface write strobe
IDE interface read strobe
64
89
90
91
92
95
96
T_O
T_I
T_O
T_O
T_O
T_O
T_I
IRESET
DMARQ
DIOW#
DIOR#
IORDY
DMACK#
INTRQ
EEPROMinterface
128
126
1
127
O
O
IU
O
GPO3
GPO1
GPI
GPO2
General Purpose Output 3
General Purpose Output 1
General Purpose Input
General Purpose Output 2
Mscellaneous Pins
57
I
XTLI
Crystal Oscillator input. 24.576 MHz crystal required. If a
clock module is used rather than a crystal then this input
must be tied high for the OXFW900 to operate, and the clock
module output connected to the CKIN pin. IMPORTANT -
See Application Notes regarding clocking
Crystal Oscillator output. IMPORTANT – See Application
Notes regarding clocking.
58
O
XTLO