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78Q8430
10/100 Ethernet MAC and PHY
Adds Ethernet Connectivity with Minimal Impact to Host Processor Utilization
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Status
Active: In Production.
Description
The 78Q8430 is a 10/100 Fast Ethernet controller supporting multimedia offload, optimized for host processor offload and throughput enhancements for demanding multimedia applications found in set-top boxes, IP video, and broadband media appliance applications. The 78Q8430 seamlessly interfaces to non-PCI processors through a simplified pseudo-SRAM-like host bus interface supporting 32/16/8-bit data bus widths and provides support for IEEE 802.3x flow control and compliance with IEEE 802.3 and 802.3u standards.
Supporting 10BASE-T and 100BASE-TX, the transceiver provides auto MDI-X cable crossover correction, autonegotiation, link configuration, and full/half-duplex
support with full-duplex flow control and requires only a dual 1:1 isolation transformer for line interfacing. Incorporating numerous packet processing and IP address resolution control functions, in addition to an extensive set of error monitoring, reporting and troubleshooting features, the 78Q8430 provides optimal 10/100 Ethernet connectivity in demanding video streaming and mixed-media applications.
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Data Sheet
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An evaluation kit is available: 78Q8430-ARM9-EVM 78Q8430STEM-DB
Key Features
- Single-Chip 10/100 Fast Ethernet Integrated PHY and MAC
- 32kB SRAM FIFO Memory
- Adaptive Memory Allocation Between Tx and Rx Paths
- Queue Independent User-Settable "Watermarks"
- Per Queue Status Indication
- Address Resolution Controller (ARC)
- Multiple Perfect Address Filtering—Eight Default (Max 12)
- "Wildcard" Address Filtering, Individual, Multicast, and Broadcast Address Recognition and Filtering
- Positive/Negative Filtering and Promiscuous Mode
- 64kB JUMBO Packet Support
- QoS—Four Transmit Priority Levels
- Non-PCI Pseudo-SRAM Host Bus Interface
- 8b, 16b, 32b Bus Width
- Big/Little-Endian Support for 16b/32b Bus Widths
- Asynchronous (100MHz) and Synchronous (50MHz) Bus Clock Support
- Low Power and Flexible Power-Supply Management
- Power-Down/Save, Wake-On LAN (Magic Packet, ON Now Packet), Link Status Change
- Traffic Offload Engine Functionality
- Transfer Frame—ARP and ICMP Echo
- IP Firewall Configuration—Drop Frames on Source IP Address
- IP Checksum
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Applications/Uses
- Digital Video Recorders/Players
- High-Definition 1080p/1080i DTVs
- High-Performance Satellite, Cable, and IPTV Set-Top Boxes
- IP-PVR and Video Distribution Systems
- Multimedia Residential Gateways
- Routers and IADs
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Key Specifications:
| Ethernet and SDH/PDH Transceivers |
| Part Number |
Host Interface |
Features |
SRAM/Memory Allocation |
VSUPPLY
(V) |
EV Kit |
Oper. Temp.
(°C) |
Package/Pins |
Smallest Available Pckg.
(mm2) |
Budgetary Price |
| max w/pins |
See Notes |
| 78Q8430 |
8/16/32B Pseudo SRAM |
| 4 Level QoS | | ARC | | CRC Strip/Add | | ID Checksum | | JUMBO Packets | | Packet Classification |
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32KB/Adaptive for Tx/Rx |
3.3 |
Yes |
-40 to +85 |
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259.2 |
$4.98 @1k |
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See All Ethernet and SDH/PDH Transceivers (5)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Application Notes
Reliability Reports
| Request Reliability Report for: |
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Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| 78Q8430-100IGT/F
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Active |
LQFP;100 pin;259.2 mm²
Land Pattern: Not Applicable
Use pkgcode/variation: C100L+7*
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-40°C to +85°C
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See data sheet
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| 78Q8430-100IGTR/F
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Active |
LQFP;100 pin;259.2 mm²
Land Pattern: Not Applicable
Use pkgcode/variation: C100L+7*
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-40°C to +85°C
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See data sheet
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| 78Q8430EBST#DB
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Active |
KIT;
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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| 78Q8430STEM#DB
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Active |
KIT;
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Information Index
Document Ref.: 19-5358
Rev 1;
2010-07-28
This page last modified: 2010-07-28
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