RELEASED
PM7366 FREEDM-8
DATA SHEET
PMC-1970930
ISSUE 4
FRAME ENGINE AND DATA LINK MANAGER
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA,INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
REVISION HISTORY
Issue No.
Issue Date
Details of Change
Issue 4
August 2001
Added patent information to legal footer, last page. Change
bars pertain to issue 3.
Issue 3
August 1999
Updated to include PBGA package option
· Addition of new pinout, pin description, and mechanical
diagram.
Incorporated Documentation Errata from PMC-980452,
“PM7366 FREEDM-8 Revision D Device Errata Sheet” Issue 4.
Issue 2
May 1998
Updated for Freedm-8 Release to Production
Issue 1
Sept. 1997
Document created for Prototype release
RELEASED
PM7366 FREEDM-8
DATA SHEET
PMC-1970930
ISSUE 4
FRAME ENGINE AND DATA LINK MANAGER
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA,INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
1
1 FEATURES
· Single-chip Peripheral Component Interconnect (PCI) Bus multi-channel HDLC controller.
· Supports up to 128 bi-directional HDLC channels assigned to a maximum of 8 channelised T1
or E1 links. The number of time-slots assigned to an HDLC channel is programmable from 1
to 24 (for T1) and from 1 to 31 (for E1).
· Supports up to 8 bi-directional HDLC channels each assigned to an unchannelised arbitrary
rate link; subject to a maximum aggregate link clock rate of 64 MHz in each direction.
Channels assigned to links 0 to 2 can have a clock rate of up 52 MHz when SYSCLK is at 33
MHz. Channels assigned to links 3 to 7 can have a clock rate of up to 10 MHz.
· Supports up to two bi-directional HDLC Channels each assigned to an unchannelised arbitrary
rate link of up to 52 MHz when SYSCLK is at 33 MHz.
· Supports a mix of up to 8 channelised and unchannelised links; subject to the constraint of a
maximum of 128 channels and a maximum aggregate link clock rate of 64 MHz in each
direction.
· For each channel, the HDLC receiver performs flag sequence detection, bit de-stuffing, and
frame check sequence validation. The receiver supports the validation of both CRC-CCITT
and CRC-32 frame check sequences. The receiver also checks for packet abort sequences,
octet aligned packet length and for minimum and maximum packet length.
· Alternatively, for each channel, the receiver supports a transparent mode where each octet is
transferred transparently to host memory. For channelised links, the octets are aligned with
the receive time-slots.
· For each channel, time-slots are selectable to be in 56 kbits/s format or 64 kbits/s clear
channel format.
· For each channel, the HDLC transmitter performs flag sequence generation, bit stuffing, and,
optionally, frame check sequence generation. The transmitter supports the generation of
both CRC-CCITT and CRC-32 frame check sequences. The transmitter also aborts packets
under the direction of the host or automatically when the channel underflows.
· Supports two levels of non-preemptive packet priority on each transmit channel. Low priority
packets will not begin transmission until all high priority packets are transmitted.
· Alternatively, for each channel, the transmitter supports a transparent mode where each octet
is inserted transparently from host memory. For channelised links, the octets are aligned with
the transmit time-slots.
· Directly supports a 32-bit, 33 MHz PCI 2.1 interface for configuration, monitoring and transfer
of packet data, with an on-chip DMA controller with scatter/gather capabilities.
RELEASED
PM7366 FREEDM-8
DATA SHEET
PMC-1970930
ISSUE 4
FRAME ENGINE AND DATA LINK MANAGER
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA,INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
2
· Provides 8 kbytes of on-chip memory for partial packet buffering in each direction. This
memory can be configured to support a variety of different channel configurations from a
single channel with 8 kbytes of buffering to 128 channels, each with a minimum of 48 bytes of
buffering.
· Supports PCI burst sizes of up to 128 bytes for transfers of packet data.
· Pin compatible with PM7364 (FREEDM-32) device.
· Provides a standard 5 signal P1149.1 JTAG test port for boundary scan board test purposes.
· Supports 3.3 and 5 Volt PCI signaling environments.
· Low power CMOS technology.
· 256 pin enhanced ball grid array (SBGA) or 272 pin plastic ball grid array (PBGA) packages
(27 mm X 27 mm).
RELEASED
PM7366 FREEDM-8
DATA SHEET
PMC-1970930
ISSUE 4
FRAME ENGINE AND DATA LINK MANAGER
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA,INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
3
2 APPLICATIONS
· IETF PPP interfaces for routers
· Frame Relay interfaces for ATM or Frame Relay switches and multiplexors
· FUNI or Frame Relay service inter-working interfaces for ATM switches and multiplexors.
· D-channel processing in ISDN terminals and switches.
· Internet/Intranet access equipment.
· Packet-based DSLAM equipment.
RELEASED
PM7366 FREEDM-8
DATA SHEET
PMC-1970930
ISSUE 4
FRAME ENGINE AND DATA LINK MANAGER
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA,INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
4
3 REFERENCES
1. International Organization for Standardization, ISO Standard 3309-1993, "Information
Technology - Telecommunications and information exchange between systems - High-level
data link control (HDLC) procedures - Frame structure", December 1993.
2. RFC-1662 - "PPP in HDLC-like Framing" Internet Engineering Task Force, July 1994.
3. PCI Special Interest Group, PCI Local Bus Specification, June 1, 1995, Version 2.1.