Getting Started with CY27410/30: 4-PLL Spread-Spectrum Clock Generator
Document No. 001-94024 Rev.*A
11
Internal Memory Structure
shows the internal memory structure of the
CY27410 device. It has a nonvolatile (NV) and a volatile
(RAM) inside. The RAM directly controls the CY27410
hardware. An internal hardware communication buffer
handles I
2
C communications.
Figure 33: Internal Memory Structure
Programming CY27410
CY27410 programming is done using the I
2
C bus interface.
O n - B o a r d P r o g r a m m i n g
On-board programming can be done by the on-board Host
that communicates with CY27410 through commands and
data that contains COM, FS, and miscellaneous
information like I2C address, read/write protection etc.
U s i n g a n E x t e r n a l I
2
C M a s t e r
You can use an external I
2
C master device such as
Cypress MiniProg
™, Cypress TT-Bridge™ or another I
2
C-
qualified device to program user configuration into an un-
programmed (virgin) CY27410 device on the system.
Figure 34. Using an External I2C Master to Program
CY27410
.
Conclusion
CY27410 is a 4-PLL spread-spectrum clock generator
targeted
at
consumer,
industrial,
and
networking
applications. Its superior specifications and value-added
features such as voltage-controlled crystal oscillator
(VCXO), frequency select, and zero/nonzero delay buffer
(ZDB/NZDB) modes make it an ideal choice for a wide
variety of applications.
