Data Sheet, Rev. 1
February 2001
FW322
1394A PCI PHY/Link Open Host Controller Interface
Features
s
s
1394a-2000 OHCI link and PHY core function in sin-
gle device:
— Enables smaller, simpler, more efficient mother-
board and add-in card designs by replacing two
components with one
— Enables lower system costs
— Leverages proven 1394a-2000 PHY core design
— Demonstrated compatibility with current
Microsoft
Windows*
drivers and common applications
— Demonstrated interoperability with existing, as well
as older, 1394 consumer electronics and periph-
erals products
— Feature-rich implementation for high performance
in common applications
— Supports low-power system designs (CMOS
implementation, power management features)
— Provides LPS, LKON, and CNA outputs to support
legacy power management implementations
OHCI:
— Complies with 1394 OHCI specification
revision 1.0
— Supports the following 1394 OHCI revision 1.1
features:
❑
Isochronous receive dual-buffer mode.
❑
Enhanced isochronous transmit skip/overflow
support.
❑
ack_data_error improvememnts for asynchro-
nous and physical requests.
❑
Enhanced CSR control register implementation.
❑
Autonomous configuration ROM updates.
❑
Enhanced power management support,
including ack_tardy event.
❑
Enhanced SelfID protocol, including
selfIDComplete2 event.
— Compatible with
Microsoft
OHCI, DV, and SBP-2
driver stack in W98, W98SE, W2000, and
MacOS
†
operating system
— 4 Kbyte isochronous transmit FIFO
— 2 Kbyte asynchronous transmit FIFO
— 4 Kbyte isochronous receive FIFO
— 2 Kbyte asychronous receive FIFO
— Dedicated asynchronous and isochronous
descriptor-based DMA engines
— Eight isochronous transmit contexts
— Eight isochronous receive contexts
— Prefetches isochronous transmit data
— Supports posted write transactions
s
1394a-2000 PHY core:
— Compliant with
IEEE
‡
1394a-2000,
Standard for a
High Performance Serial Bus
(Supplement)
— Provides two fully compliant cable ports each
supporting 400 Mbits/s, 200 Mbits/s, and
100 Mbits/s traffic
— Supports extended BIAS_HANDSHAKE time for
enhanced interoperability with camcorders
— While unpowered and connected to the bus, will
not drive TPBIAS on a connected port even if
receiving incoming bias voltage on that port
— Does not require external filter capacitor for PLL
— Supports PHY core-link interface initialization and
reset
— Supports link-on as a part of the internal
PHY core-link interface
— 25 MHz crystal oscillator and internal PLL provide
transmit/receive data at 100 Mbits/s, 200 Mbits/s,
and 400 Mbits/s, and internal link-layer controller
clock at 50 MHz
— Interoperable across 1394 cable with 1394 phys-
ical layers (PHY core) using 5 V supplies
— Node power-class information signaling for
system power management
— Supports ack-accelerated arbitration and fly-by
concatenation
— Supports arbitrated short bus reset to improve
utilization of the bus
— Fully supports suspend/resume
— Supports connection debounce
— Supports multispeed packet concatenation
— Supports PHY pinging and remote PHY access
packets
— Reports cable power fail interrupt when voltage at
CPS pin falls below 7.5 V
— Separate cable bias and driver termination voltage
supply for each port
Link:
— Cycle master and isochronous resource manager
capable
— Supports 1394a-2000 acceleration features
s
*
Microsoft
and
Windows
are registered trademarks of Microsoft
Corporation.
†
MacOS
is a registered trademark of Apple Computer, Inc.
‡
IEEE
is a registered trademark of The Institute of Electrical and
Electronics Engineers, Inc.
AGERE [ AGERE SYSTEMS ]
