phyCORE-OMAP44xx
Part I: PCM-049/phyCORE-OMAP44xx System on Module
L-760e_1 © PHYTEC Messtechnik GmbH 2012
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1.8 Serial Interfaces
The phyCORE-OMAP44xx provides numerous serial interfaces some of which are equipped with a transceiver to
allow direct connection to external devices:
1. Three high speed UART interfaces (UART1, UART2 and UART4) with up to 3.6 Mbps at TTL level. One of them
(UART2) provides hardware flow control (RTS and CTS signals)
2. One high speed UART interfaces (UART3) connected to an on-board RS-232 transceiver and thus available
at RS-232 level. It also provides hardware flow control (RTS and CTS signals)
3. High speed USB OTG transceiver supporting the OMAP44xx USB OTG interface
4. High speed USB HOST transceiver supporting the OMAP44xx USB Host interface
5. Full speed IC-USB HOST controller supporting the OMAP44xx USB Host interchip interface
6. Auto-MDIX enabled 10/100 Ethernet interface implemented with an Ethernet controller attached to the
OMAP44xx GPMC interface
7. ThreeI
2
C interfaces
8. One Serial Peripheral Interface (SPI) interface
9. One Multichannel buffered serial port (McBSP) interface
10. One Multichannel audio serial port (McASP) interface
The following sections of this chapter detail each of these serial interfaces and any applicable configuration
jumpers.
Caution:
Please pay special attention to the Signal Level (SL) column in the following tables. Some of the serial
interfaces signal level is VCC_1V8_IO, which is 1.8 V and which is not identical with the voltage level of the
primary supply voltage of the phyCORE-OMAP44xx. When connecting these interfaces to external devices level
shifters supplied with VCC_1V8_IO (X1B30) at one of the supply rails should be used. Please take care to not
load the reference voltage VCC_1V8_IO too heavily to avoid any disfunction or damage of the module.
The maximum load is 400 mA.
