Overview
Description
The 9214 clock generator provides the necessary clock signals to support the Rambus XDRTM memory subsystem and Redwood logic interface. The clock source is a reference clock that may or may not be modulated for spread spectrum. The 9214 provides 4 differential clock pairs in a space saving 28-pin TSSOP package and provides an off-the-shelf high-performance interface solution. Figure 1 shows the major components of the 9214 XDR Clock Generator. These include the a PLL, a Bypass Multiplexer and four differential output buffers. The outputs can be disabled by a logic low on the OE pin. An output is enabled by the combination of the OE pin being high, and 1 in its SMBus Output control register bit. The PLL receives a reference clock, CLK_INT/C and outputs a clock signal at a frequency equal to the input frequency times a multiplier. Table 2 shows the multipliers selectable via the SMBus interface. This clock signal is then fed to the differential output buffers to drive the enabled clocks. Disabled outputs are set to Hi-Z. The Bypass mode routes the input clock, CLK_INT/C, directly to the differential output buffers, bypassing the PLL. Up to four 9214 devices can be cascaded on the same SMBus. Table 3 shows the SMBus addressing and control for the four devices.
Features
- 400 - 500 MHz clock source
- 4 open-drain differential output drives with short term jitter < 40ps
- Spread spectrum compatible
- Reference clock is differential or single-ended, 100 or 133 MHz
- SMBus programmability for: - frequency multiplier - output enable - operating mode
- Supports frequency multipliers of: 3, 4, 5, 6, 8, 9/2, 15/2 and 15/4
- Support systems where XDR subsystem is asynchronous to other system clocks
- 2.5V power supply
Comparison
Applications
Design & Development
Support
Support Communities
Support Communities
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DA14530 software compatability
Hi Dialog team I see the resources for DA14530/14531 are shared. The only difference is supposed to be the DC-DC and nothing to do with the software. So I am assuming the SDK and software examples run on both even if, lets take the SmartBond - CodeLess AT ...
Dec 16, 2021 -
Question on CODELESS code dimension and 32K limit
Good afternoon. I have purchased a DA14531MOD DEVKT and I'm interested in modifying some parameters in codeless datapump code. I've already downloaded the code from the site, but unfortunately the size of the code excess the 32KB limit of Keil free version. Any hints?
Dec 16, 2021 -
add custom profile to user_empty_peripheral_templates
Hi, I just tried out ble_app_peripheral, now i want to add a custom service with 2 characteristics to user_empty_peripheral_templates project. I followed your document on creating a custom profile which is based on ble_app_peripheral project. But i couldn't get it to work ...
Dec 16, 2021