EZ-KIT Lite Hardware Reference
External PLL
The ADSP-21369 EZ-KIT Lite contains an external phase lock loop to help generate a faster and more stable master input clock MCLK. The PLL uses DAI pin 3 as an input clock from the ADSP-21369 processor. The new clock generated by PLL connects to the processor via DAI pin 2.
Example programs are included in the EZ-KIT Lite installation directory to demonstrate how to configure and use the board’s external PLL.
Expansion Interface
The expansion interface consists of the three 90-pin connectors. Table 2-2shows the interfaces each connector provides. For the exact pinout of these connectors, refer to “Schematics” on page B-1. The mechanical dimen- sions of the connectors can be obtained from Technical or Customer Support.
Table 2-2. Expansion Interface Connectors
Connector | Interfaces |
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| |
J1 | 5V, ADDR[23–0],DATA[31–0] |
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J2 | 3.3V, FLAG[3–0], DAIP[20–1], DPI[14–1], SDRAM control signals |
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J3 | 5V, 3.3V, reset, parallel port control signals |
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Limits to the current and to the interface speed must be taken into consid- eration when using the expansion interface. The maximum current limit is dependent on the capabilities of the used regulator. Additional circuitry can also add extra loading to signals, decreasing their maximum effective speed.
Analog Devices does not support and is not responsible for the effects of additional circuitry.
ADSP-21369 EZ-KIT Lite Evaluation System Manual | 2-7 |