Technical Brief; Main - LG FM300 Service Manual

3. TECHNICAL BRIEF

3. TECHNICAL BRIEF

3.1 MAIN

3.1 MAIN
3.1.1 Network Processor (BCM5358U, U200)
The Broadcom® BCM5358U processor is the highest performance chip in the Intensi-fi® XLR processor family.
Integrating a powerful 533 MHz MIPS32® 74KTM core with a four-way set associative 32 KB instruction cache,
a 2-way set associative 32 KB data cache, and a 64-entry TLB, the BCM5358U offers significant performance
improvements in both transfer rates and CPU utilization.
Flexible support for a variety of system bus interfaces is provided including one USB 2 0 EHCI (OHCI 1 0 support) Flexible support for a variety of system bus interfaces is provided, including one USB 2.0 EHCI (OHCI 1.0 support)
host port, one USB HSIC port , 16-bit DDR400 memory control, serial Flash port . There are shared GPIOs with
other functions on the BCM5358U processor. All inputs can be used to generate processor interrupts. The
sections below describe each major functional block in more detail.
The BCM5358U has a 5-port, non-blocking 10/100 Ethernet switch. Any of the five ports can be configured as
the WAN port, with the other four being LAN ports. Each port can be programmed to support four-level priority
queues for quality of service (IEEE 802.1p QoS). IEEE 802.1q VLAN, IGMP snooping, and IP DiffServ/ToS are also
supported. The MAC is IEEE 802.3u compliant and supports a frame size up to 1536 bytes. supported. The MAC is IEEE 802.3u™ compliant and supports a frame size up to 1536 bytes.
General:
• IEEE 802.11n-compliant.
• Integrated 2.4 GHz radio.
• Internal PAs capable of Pout > 18 dBm (G band).
• Simultaneous dual-band support with additional MAC/PHY/Radio (e.g., BCM43236).
• 2-stream spatial multiplexing up to 200 Mbps.
• Supports 2 2 and optional diversity with 3 antennas.
• Supports MCS 0 – 15 and MCS 32 modulation and coding rates in 802.11n.
• Supports 20 MHz and 40 MHz channels with optional SGI.
• Support for STBC in both TX and RX.
• Full IEEE 802.11b/g legacy compatibility with enhanced performance.
• Advanced MIPS32® 74KTM Core:
- 32 KB I-cache, 32 KB D-cache
- CPU can run up to 533 MHz/960 DMIPs
• MMU/TLB support for Linux®.
• Five-port integrated 10/100BASE-TX IEEE 802.3u™ compliant Auto-MDIX transceivers and LAN/WAN switch
controller.
• Advanced Ethernet MAC (BCM5358 only):
- MII PHY interface.
- Supports external 10/100 switch, such as the BCM5325E.
• One USB 2.0 host port plus one 480 MHz HSIC port
• 16-bit DDR400 support up to 2 Gbit capacity. pp
• Supports serial Flash up to 16 MB.
• UART and JTAG interface, up to 32 GPIOs.
• BCM5358U package: 15 mm
LGE Internal Use Only
p p y
15 mm 366-pin TFBGA
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3. TECHNICAL BRIEF
3. TECHNICAL BRIEF
Only for training and service purposes