Zilog EZ80F91GA User Manual
Page 116
ZGATE Embedded Security Development Board
UM024502-1012
106
ZGATE Embedded Security Development Kit
User Manual
Schematic diagrams for the ZGATE Embedded Security Development Board are provided
in
Appendix B. Schematic Diagrams
The ZGATE Embedded Security Development Board is driven by the eZ80F91 MCU with
an external 5 MHz (Y1) crystal and an on-chip PLL programmed to run on the eZ80F91
MCU at its internal frequency of 50 MHz. The chip employs an Ethernet Media Access
Controller (EMAC) with a Media-Independent Interface (MII) that allows the eZ80F91
MCU to it to interface to all available industry-standard PHYs.
For this ZGATE Embedded Security implementation, the ICS1894-40 PHY (U5) was
selected to provide a suitable price/performance solution.
Debug connector (J1) provides access to the eZ80F91 MCU so that the user can download
and control the execution of the sample projects provided with the Kit or his/her own proj-
ect(s) using the USB Smart Cable included in the Kit.
Figure 14. ZGATE Embedded Security Development Kit Block Diagram
GPIO Connector
eZ80F91
144BGA
5MHz/PLL
PHY
FTDI
USB
Mini-B
External
Power
Up to 1.5A
SRAM
(1MB, 2 x 512KB)
Flash
(8 MB)
LDO
DB9
RJ45
MAGN
ICS1894
J3011
S29GL064N
CY7C1049DV33-10ZSXI x 2
3.3V/
400mA
UART0
MII
UART1
Note: