TAM-3517 HARDWARE MANUAL rev B
July 3 2012, TechNexion
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5.6
USB PHY
The SMSC USB3320 is a Hi-Speed USB 2.0 transceiver that provides a configurable physical
layer (PHY) solution and is an excellent macth for a wide variety of products. USB3320 uses the
industry standard UTMI+ Low Pin Interface (ULPI) to connect the USB Transceiver to the link.
ULPI uses a method of in-band signalling and status byte transfers between the link and
transceiver to facilitate a USB session with only 12 pins.
5.7
WiFi Module
(This module is included on the TAM-3517W; the TAM-3517 does not have Wi-Fi)
The Marvell® 88W8686 is a low-power highly-integrated IEEE 802.11g/b MAC/Baseband/RF
WLAN system-on-chip (SoC), designed to support IEEE 802.11g payload data rates of 6, 9, 12,
18, 24, 36, 48, and 54 Mbps, as well as 802.11b data rates of 1, 2, 5.5, and 11 Mbps.
General features:
Ultra low-power dissipation
Single-chip integration of 802.11 g/b wireless RF and baseband, MAC, CPU, memory,
and host interfaces
Integrates all RF to baseband transmit and receive operations, with support for external
PAs
Fully integrated frequency synthesizers with optimized phase noise performance for
OFDM applications
Integrated direct conversion WLAN RF radio
Supports 19.2, 20, 24, 26, 38.4, and 40 MHz oscillator clock sources
Software backward compatible with 88W8385 and 88W8015 devices
5.7.1
WiFi Signals Description
SIGNAL NAME
DESCRIPTION
MMC2_CLK
Clock
MMC2_CMD
Command
MMC2_d0
4 bit data
MMC2_d1
4 bit data
MMC2_d2
4 bit data
MMC2_d3
4 bit data
GPIO 156
Wifi enable
– power on/ off
GPIO 57
Wifi working (LED will flash)
SYS-nRESPWRON
Wifi reset
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