Configuration and Operation
2.3.11Audio Indicator (Buzzer)
The ADS includes an audio indicator or buzzer, U23. When
2.3.12LED Indicators
Table
Table 2-9. Function of LED Indicators
Reference # | Color | Name | Function |
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LED1 | Green | 5V PWR | 5 V power is ON |
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LED2 | Green | VCC PWR | 3 V power is ON |
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LED3 | Orange | STAT 2 | User status controlled by Output BIT 15* |
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LED4 | Orange | STAT 1 | User status controlled by Output BIT 14* |
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LED5 | Green | ACTIVE | Blinking indicates LAN Activity |
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LED6 | Orange | LINK | Link good or host controlled output |
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LED7 | Red | BUS ACT | Blinking indicates external bus activity |
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*A logic high level at the controlling pin turns on the LED. A logic low turns it off.
2.4Using The Board Connectors
Table
Table 2-10. M9328MX21ADSE Connectors
Connector | Function |
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P1 | UART1 | DCE interface to UART1 of the i.MX21 | |
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P2 | UART4 | DTE interface to UART4 of the i.MX21 | |
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P3 | External UART | DCE interface to Port A of the ST16C2552 UART | |
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P4 | USB OTG | USB On The Go mini AB connector | |
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P5 | Keypad module | Connect the Keypad ribbon cable between this connector and the | |
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| corresponding connector of the Keypad Module, J1. | |
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P6 | SD/MMC | Slide the MMC card into the connector until it snaps into place. | |
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P7 | LCD panel | Connect LCD ribbon cable between this connector and the | |
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| corresponding connector of the LCD display panel, J11. | |
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P8 | Power | Plug the | |
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| M9328MX21ADSE User’s Manual, Rev. A |
Freescale Semiconductor |