Part I: PCM-049/phyCORE-OMAP44xx System on Module
phyCORE-OMAP44xx
52
©
PHYTEC Messtechnik GmbH
2012
L-760e_1
1.8.4 Full-Speed IC USB Host interface
The full-speed IC USB Host interface of the phyCORE-OMAP44xx is directly connected to the embedded
full-speed USB host controller (USBC1) of the OMAP44xx which supports a single universal serial bus (USB) host
port with an USB interchip intended for direct chip to chip communication. It complies with the USB 2.0
standard. The IC USB Host controller supports USB 2.0 full-speed and low-speed operations. As only two of the
four signals are brought out on the phyCORE-Connector, only the 2-pin mode is usable. The applicable interface
signals can be found on the phyCORE-Connector X1 as shown in
.
1.8.5 Ethernet Interface
Connection of the phyCORE-OMAP44xx to the world wide web or a local area network (LAN) is possible using the
on-board FEC (Fast Ethernet Controller) SMSC LAN9221 at U12. It is connected to the GPMC interface of the
OMAP44xx. The FEC operates with a data transmission speed of 10 Mbit/s or 100 Mbit/s.
1.8.5.1 Ethernet Controller (U12)
With an Ethernet controller mounted at U12 the phyCORE-OMAP44xx has been designed for use in 10Base-T and
100Base-T networks. The 10/100Base-T interface with its LED signals extends to phyCORE-Connector X1.
The Ethernet controller's integrated PHY supports HP Auto-MDIX technology, eliminating the need for the
consideration of a direct connect LAN cable, or a cross-over patch cable. It detects the TX and RX pins of the
Pin #
Signal
I/O
SL
Description
X1C17
X_USBC1_ICUSB_DP
I/O
USB
Interchip USB host data plus
X1C18
X_USBC1_ICUSB_DM
I/O
USB
Interchip USB host data
minus
Table 20:
Location of the IC USB Host Signals
Pin #
Signal
I/O
SL
Description
X1C24
X
O
3.3 V (VCC_3V3_S)
Ethernet transmit positive
output
X1C25
X_ETH_TX-
O
3.3 V (VCC_3V3_S)
Ethernet transmit negative
output
X1C27
X_ ETH_SPEED
O
3.3 V (VCC_3V3_S)
Ethernet Speed Indicator
(open drain)
X1D25
X
I
3.3 V (VCC_3V3_S)
Ethernet receive positive
input
X1D26
X_ETH_RX-
I
3.3 V (VCC_3V3_S)
Ethernet receive negative
input
X1D27
X_ETH_LINK
O
3.3 V (VCC_3V3_S)
Ethernet link indicator
(open drain)
X1C44
X_PEMIC_PREQ2A
O/I
VCC_1V8_IO / 1.8 V
Ethernet controller power
management event signal
(PME) / PMIC peripheral 2A
power request input
Table 21:
Location of the Ethernet Signals