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PDF OS81110 Data sheet ( Hoja de datos )
| Número de pieza | OS81110 | |
| Descripción | cPHY Evaluation Board User Guide | |
| Fabricantes | Microchip | |
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®
OS81110 cPHY Evaluation Board
User’s Guide
AIS14001 V1.0.0
Supporting MOST® Networks
Media Oriented Systems Transport
2014 Microchip Technology Inc.
MAY 2014
DS60001267B-page 1
1 page  
OS81110 cPHY Evaluation Board User’s Guide
AIS14001 V1.0.0 FRONT PHOTO
The OS81110 cPHY Evaluation Board User’s Guide contains schematics, assembly drawings,
and layout plots corresponding to Evaluation Board AIS14001 V1.0.0. This board uses a Micro-
chip OS81110 INIC (Intelligent Network Interface Controller) specifically for MOST150 protocol
applications, including MOST ToGo Applications. Please note, the name “Eval110 cPHY Board”
“Eval110,” Eval110 MOST ToGo” and “Eval110-MTG” are also used within reference drawings
and on the board itself. These alternative names all refer to the AIS14001 V1.0.0 hardware.
2014 Microchip Technology Inc.
DS60001267B-page 5
5 Page 
OS81110 cPHY Evaluation Board User’s Guide
2.0 CONFIGURATION AND STATUS
2.1 LEDs
A number of LEDs are used on the Eval110 cPHY Board to convey board and application status information to the user.
The following LEDs have dedicated functionality controlled by on-board hardware:
• The BOARD POWER red LED (D209) indicates that the INIC, IOC and EHC are powered up. The LED is lit when
both the MAIN_3V3 and MAIN_1V8 supplies are on.
• The CB PWR red LED (D207) indicates that the CommBridge is powered up. The LED is lit when both the CB_3V3
and CB_1V8 supplies are on.
• The LOCK green LED (D217) is controlled by the INIC ERR/BOOT pin. The LED is lit when the network is locked.
• The IOC ERROR orange LED (D221) is controlled by the IOC ERROR pin. An inverter is used so that this LED is lit
whenever the IOC PLL is unlocked (i.e. error condition).
• The INIC RESET yellow LED (D218) is lit whenever the INIC_RST signal is asserted (Section 4.1).
• The IOC RESET yellow LED (D219) is lit whenever the IOC_RST signal is asserted (Section 4.3).
• The EHC RESET yellow LED (D220) is lit whenever the EHC_RST signal is asserted (Section 4.4).
• The EHC DFU orange LED (D206) is lit whenever the EHC_DFU signal is asserted. Typically, this signal is only
used when the EHC bootloader is active (i.e. during a firmware update).
• The USB TX yellow LED (D205) and USB RX green LED (D6) blink to indicate message exchange between the
Comm Bridge and the EHC.
The remaining LEDs are general purpose LEDs available to the EHC application code, where:
• The green LED (D203) is active-low and available at I/O expander (U200) channel P14 (LED1).
• The yellow LED (D202) is active-low and available on I/O expander (U200) channel P15 (LED2).
• The orange LED (D201) is active-low and available on I/O expander (U200) channel P16 (LED3).
• The red LED (D200) is active-low and available on I/O expander (U200) channel P17 (LED4).
2.2 Switches
The Eval110 cPHY Board provides an 8-position DIP switch (BOARD OPTIONS, S2) for EHC configuration options. The
exact functionality depends on the application code; however, DIP switch settings are typically latched at startup and
used as run-time configuration settings. Examples of run-time options include enabling/disabling debug print output and
enabling/disabling Stand-Alone mode.
Note: DIP switch 6 is also used by hardware to override power management shut-
down capabilities. Refer to Section 11.4 for more information.
The DIP switch itself is connected to the I/O expander (U200); therefore, the EHC uses the I2C Board Peripheral Bus
to determine the values. See Section 9.4.1 for more information about the EHC’s I2C buses. The DIP switch connections
to the I/O expander are as follows:
• DIP switch 1 connects to U200 channel P00
• DIP switch 2 connects to U200 channel P01
• DIP switch 3 connects to U200 channel P02
• DIP switch 4 connects to U200 channel P03
• DIP switch 5 connects to U200 channel P04
• DIP switch 6 connects to U200 channel P05
• DIP switch 7 connects to U200 channel P06
• DIP switch 8 connects to U200 channel P07
The Eval110 cPHY Board also supports a 16-position rotary switch (ID, S1) which allows the user to set unique identifiers
on up to 16 different MOST ToGo boards. EHC application code can set various application values/fields appropriately,
based on the switch setting. One such example is setting the board’s unique ECL Node Class, for use during the MOST
System Test. Refer to the MOST Electrical Control Line Specification [8] for more information.
The Eval110 cPHY Board also supports two general-purpose push-button switches (SWA and SWB) connected to the
EHC at RD8 and RE6, respectively. These switches are debounced by a specialized debounce device (U210) that uses
a 40 ms qualification timer. The debounced outputs are push-pull outputs and do not require pull-up resistors.
2014 Microchip Technology Inc.
DS60001267B-page 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet OS81110.PDF ] | |
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