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=== PWM Design rules ===
Undo revision 9628 by Pau pajuelo (Talk)
* [{{#lst:Template:Links|IGEP_AQUILA_EXPANSION_ISEE_Hardware}} IGEP AQUILA EXPANSION Hardware Reference Manual]
* [{{#lst:Template:Links|IGEP_AQUILA_EXPANSION_ISEE_Schematic}} IGEP AQUILA EXPANSION Public Schematics]
* [http://www.isee.biz/support/downloads/item/igep-aquila-expansion-mechanical-pcb IGEP AQUILA EXPANSION Mechanical LayoutPCB]* [http://www.isee.biz/support/downloads/item/igep-aquila-expansion-mechanical-pdf IGEP AQUILA EXPANSION Mechanical Layout PDF]
== Other resources ==
|-
| '''Name'''
| '''SODIMM pinpad''' | '''AM335x pinpad'''
|-
| ETN_TXN
*For Ethernet data lines: TX differential lines (ETN_TXN and ETN_TXP) and RX differential lines (ETN_RXN and ETN_RXP)
**Equal length and symmetric with regards of shape, length, and via count.
**Maintain 100 ohm 100R differential impedance in the layout traces.
**Isolate differential pairs from nearby signals and circuitry to maintain the signal integrity.
*Among PHY vendors, the 25mm rule is considered good design practice for EMI considerations. The intention is to isolate the PHY from the magnetics.
|-
| '''Name'''
| '''SODIMM pinpad''' | '''AM335x pinpad'''
|-
| USBH_VBUSEN
|-
| '''Name'''
| '''SODIMM pinpad''' | '''AM335x pinpad'''
|-
| USBOTG_ID
=== USB design rules===
* For USB data lines: USB1 (USBH_DM (29) and USBH_DP (31)) and USB0 (USBOTG_DM (35) and USBOTG_DP (37))**Maintain symmetry 90R +/- 15% differential impedance in the layout traces.**Equal length and symmetric with regards of shape, length, and isolate via count. **Isolate differential pairs from nearby signals and circuitry to mantain maintain the signal integrity.* VBUS overcurrent protection: USB power source current must not be pass 500mA, you should apply a protection into the baseboard. [{{#lst:Template:Links|IGEP_AQUILA_EXPANSION_ISEE_Schematic}} IGEP AQUILA EXPANSION Public Schematic Schematics] proposes a solution using TPS2051D IC.* IGEP COM AQUILA includes into each USB peripheral a VBUS overvoltage protector.
== I2C ==
=== Dedicated I2C ===
IGEP COM AQUILA uses I2C0 as a dedicated I2Cbus. I2C0 is shared with PMIC (0x2d address) and have has 5K Pull upsPU.
{| align="JUSTIFY" cellpadding="1" border="1" style="width: 300px; height: 1px;"
|-
| '''Name'''
| '''SODIMM pinpad''' | '''AM335x pinpad'''
|-
| I2C0_SCL
|-
| '''Name'''
| '''SODIMM pinpad''' | '''AM335x pinpad'''
|-
| I2C1_SCL
=== I2C design rules===
*I2C0 should be your default option, but it could be interesting use Optional I2Cs if your external peripheral need needs to use a huge transfer data connection.
*Optional I2Cs needs to be pulled up externally, 5K resistor tied to 3V3 must be necessary.
*IGEP COM AQUILA uses 3V3 voltage levels for I2C buses. In some cases, voltage translators like TXS0102 should be necessary to adapt voltage levels between ICs.
== SPI ==
|-
| '''Name'''
| '''SODIMM pinpad''' | '''AM335x pinpad'''
|-
| SPI0_CS0
*Optional SPI1 is not recommended to use, because some lines are shared with UART0 (Kernel Debug UART).
*IGEP COM AQUILA uses 3V3 voltage levels for SPI buses. In some cases, voltage translators like TXS0102 should be necessary to adapt voltage levels between ICs.
== MMC ==
|-
| '''Name'''
| '''SODIMM pinpad''' | '''AM335x pinpad'''
|-
| MMC0_CD
|-
| '''Name'''
| '''SODIMM pinpad''' | '''AM335x pinpad'''
|-
| MMC1_CD
=== MMC design rules ===
*MMC0 can not be used by SODIMM connector and on board uSD card reader at the same time.*MMC1 is not bootable during system boot processusing the bootmode pad.
*MMC1 bus is a good option to expand memory capacities or use as a backup memory.
*MMC bus needs PU resistors to avoid unknown signals. 10K PU resistors from tied to 3V3 source to must be necessary in lines:SD1_Dx, SD1_CD and SD1_CLK must be necessary.*OptionallyOptional: low resistance resistors could be necessary to equalize bus impedances. Use 10R series resistors to in lines: SD1_Dx, SD1_CD and SD1_CLK could be necessary.
== UART ==
|-
| '''Name'''
| '''SODIMM pinpad''' | '''AM335x pinpad'''
|-
| UART0_TX
=== UART design rules ===
* IGEP COM AQUILA uses UART0 as a Kernel Debug Peripheral. This UART is a an inexpensive method to detect and repair system issues. It is recommendable use another UART instead of UART0to preserve this functionality.* UART5_RTS and UART5_CTS are shared with MMC0 (uSD card reader), don't use both peripherals at the same time. Find more information at [{{#lst:Template:Links|IGEP_COM_AQUILA_ISEE_Hardware}} IGEP COM AQUILA Hardware Reference Manual] section 6.1* Don't use UART3_TX and UART3_RX in both SODIMM pinsIGEP COM AQUILA uses 3V3 voltage levels for UART buses. In some cases, voltage translators like TXS0102 should be necessary to adapt voltage levels between ICs.
== Video ==
|-
| '''Name'''
| '''SODIMM pinpad''' | '''AM335x pinpad'''
|-
| LCD_D0
=== Video design rules ===
*IGEP AQUILA EXPANSION Public Schematics adapts SODIMM video lines to HDMI Transmitter.
*Optionally: low capacitance common mode capacitors could be necessary to filter high frequency interferences. 47p capacitors tied added between video data lines and GND could for high frequency attenuation. Typical capacitance values should be necessarybetween 22pF and 47pF.
*Optionally: low resistance resistors could be necessary to equalize bus impedances. 10R series resistors to data and clock lines could be necessary.
== Audio ==
=== Optional Audio ===
IGEP COM AQUILA contains has a two MCASP transceivers. This bus transceiver, it is can be a digital multichannel audio serial port used to attach Digital Signal Processors (DSPs), by microprocessors, peripherals, DSPs and popular industry audio CODECs that implement the inter-IC sound bus standard (I2S) and Intel AC97 standard.[{{#lst:Template:Links|IGEP_AQUILA_EXPANSION_ISEE_Schematic}} IGEP AQUILA EXPANSION Public Schematics] uses this bus to send audio data to HDMI transceiver.
{| align="JUSTIFY" cellpadding="1" border="1" style="width: 300px; height: 1px;"
|-
| '''Name'''
| '''SODIMM pinpad''' | '''AM335x pinpad'''
|-
| MCASP0_ACLKR
| 86
| B12
|-
| MCASP0_ACLKR
| 67
| J17
|-
| MCASP0_ACLKR
| 75
| U18
|-
| MCASP0_ACLKR
| 146
| V2
|-
| MCASP0_ACLKX
| 42 and 95
| A13
|-
| MCASP0_ACLKX
| 52
| K18
|-
| MCASP0_ACLKX
| 131
| U1
|-
| MCASP0_ACLKX
| 158
| V16
|-
| MCASP0_AHCLKR
| 85
| A14
|-
| MCASP0_AHCLKX
| 81
| K15
|-
| MCASP0_AXR0
| 83
| D12|-| MCASP0_AXR0| 54| L17|-| MCASP0_AXR0| 153| T16|-| MCASP0_AXR0| 133| U3
|-
| MCASP0_AXR1
| 84
| D12D13|-| MCASP0_AXR1| 53| L16|-| MCASP0_AXR1| 123| V4|-| MCASP0_AXR2| 86| B12|-| MCASP0_AXR2| 73| C12|-| MCASP0_AXR2| 68| H16|-| MCASP0_AXR2| 120| U4|-| MCASP0_AXR2| 146| V2|-| MCASP0_AXR3| 85| A14|-| MCASP0_AXR3| 87| C13|-| MCASP0_AXR3| 124| T5|-| MCASP0_AXR3| 122| V3
|-
| MCASP0_FSR
| 87
| C13
|-
| MCASP0_FSR
| 76
| J18
|-
| MCASP0_FSR
| 79
| V12
|-
| MCASP0_FSR
| 122
| V3
|-
| MCASP0_FSX
| 51
| B13
|-
| MCASP0_FSX
| 53
| L18
|-
| MCASP0_FSX
| 72 and 154
| U16
|-
| MCASP0_FSX
| 132
| U2
|}
=== Audio design rules ===
* The MCASP consists of independent transmitter and receiver sections with independent clock generation and frames synchronization. For example: If you only need to transfer audio the MCASP0_*R lines are not necessary to be used.
* The MCASP1 cannot be used.
== ADCs ==
=== Dedicated ADCs ===
AM335x includes a touchscreen controller and analog-to-digital converter subsystem. It is an 8-channel general-purpose analog-to-digital converter (ADC) with optional support for interleaving touchscreen (TS) conversions for a 4-wire, 5-wire, or 8-wire resistive panel. This controller can be configured for use in one of the following applications:
*8 general-purpose ADC channels
*4-wire TSC with 4 general-purpose ADC channels
*5-wire TSC with 3 general-purpose ADC channels
*8-wire TSC
{| align="JUSTIFY" cellpadding="1" border="1" style="width: 300px; height: 1px;"
|-
| '''Name'''
| '''SODIMM pinpad''' | '''AM335x pinpad'''
|-
| VADC
== PWM ==
=== Optinal PWM ===
AM335x includes six PWM peripherals with 16 bits time-base with Period and Frequency control.
{| align="JUSTIFY" cellpadding="1" border="1" style="width: 300px; height: 1px;"
|-
| '''Name'''
| '''SODIMM pinpad''' | '''AM335x pinpad'''
|-
| EHRPWM0A
| 51
| B13
|-
| EHRPWM1A
| 133
| U3
|-
| EHRPWM1B
| 120
| U4
|-
| EHRPWM2A
| T10
|}
== GPIOs ==
=== Optional GPIOs ===All the optional SODIMM pins can be used as GPIOs. The following table shows some recommended SODIMMS SODIMM pins to be used as GPIOs:
{| align="JUSTIFY" cellpadding="1" border="1" style="width: 300px; height: 1px;"
|-
| '''Name'''
| '''SODIMM pinpad''' | '''AM335x pinpad'''
|-
| KP_COL0
== CAN ==
CAN is a vehicle bus standard designed to allow microcontrollers and devices to communicate with each other within a vehicle without a host computer.
=== Optional CAN ===
{| align="JUSTIFY" cellpadding="1" border="1" style="width: 300px; height: 1px;"
|-
| '''Name'''
| '''SODIMM pinpad''' | '''AM335x pinpad'''
|-
| DCAN0_TX
| G18
|}
= Start a new hardware design of own IGEP AQUILA EXPANSION =
IGEP AQUILA EXPANSION is an Open Source board designed for fast prototyping of your own projects for IGEP COM AQUILA. You can use the following resources as a model for your design:
* [http://www.isee.biz/support/downloads/item/igep-aquila-expansion-mechanical-pcb IGEP AQUILA EXPANSION Mechanical Layout PCB] for Altium designers.
**Mechanical dimension implementation.
**Footprints
* [http://www.isee.biz/support/downloads/item/igep-aquila-expansion-mechanical-pdf IGEP AQUILA EXPANSION Mechanical Layout PDF]
**Mechanical dimension implementation.
{{Navigation/IGEP Technology Guides/Getting Started/Ending
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