Ez80F92 Flash Module; Figure 22. Schematic Diagram, #1 Of 9-Top Level - ZiLOG eZ80F92 User Manual

eZ80F92 Flash Module

Figures 22 through 30 diagram the layout of the eZ80F92 Flash Module. Ethernet circuiting devices are not loaded on the
eZ80F92 Flash Module. However, these devices appear in the following schematics for reference purposes.
03
RAM
SRAM
D[0..7]
D[0..7]
A[0..23]
A[0..23]
-RD
-RD
-WR
-WR
-CS1
-CS1
04
ROM
NOR-Flash
D[0..7]
D[0..7]
A[0..23]
A[0..23]
-RD
-RD
-WR
-WR
-CSFLASH
-CSFLASH
-RESFLASH
-RESFLASH
-FLASHWE
-FLASHWE
09
Power
PowerSupply
V3.3
V3.3
GND
GND
UM013904-0203
02
CPU
eZ80
D[0..7] -RESET
A[0..23]
-IOREQ
-RD -IOREQ
-MREQ
-WR -MREQ
-INSTRD
-INSTRD
-WAIT
-WAIT
-HALT_SLP
-HALT_SLP
-BUSREQ
-BUSREQ
-BUSACK
-BUSACK
-NMI
-NMI
CLK_OUT
CLK_OUT
RTC_VDD
RTC_VDD
IICSDA
IICSDA
IICSCL
IICSCL
PB[0..7]
PB[0..7]
PC[0..7]
PC[0..7]
PD[0..7]
PD[0..7]
-CS[0..3]
-CS[0..3]
JTAG[1..4]
JTAG[1..4]
TDO
TDO
05
Ethernet
CS8900A
SD[0..7]
SA[0..3]
IOCHRDY
-ETHRD
-ETHWR
ETHIRQ
ETHIRQ
-SLEEP
-SLEEP
-ACTIVE
-ACTIVE
Figure 22. Schematic Diagram, #1 of 9—Top Level
PRELIMINARY
07
Peripherals
Reset
IRDA_TXD
IRDA_TXD
-RESET IRDA_RXD
-RESET IRDA_RXD
IRDA_SD
IRDA_SD
06
Logic
CTRL-Logic
-RESET
-RESET
-WAIT
-WAIT
IRDA_TXD
IRDA_RXD
IRDA_SD
-DIS_FLASH
PD[0..7]
-DIS_IRDA
-CS[0..3]
-CSFLASH
-RESFLASH
SD[0..7]
SA[0..3]
IOCHRDY
-ETHRD
-ETHWR
eZ80F92 Development Kit
User Manual
08
Connector
Headers
-RESET
-RESET
-FLASHWE
-FLASHWE
-IOREQ
-IOREQ
-MREQ
-MREQ
-INSTRD
-INSTRD
-WAIT
-WAIT
-HALT_SLP
-HALT_SLP
-BUSREQ
-BUSREQ
-BUSACK
-BUSACK
-NMI
-NMI
CLK_OUT
CLK_OUT
RTC_VDD
RTC_VDD
IICSDA
IICSDA
IICSCL
IICSCL
D[0..7]
D[0..7]
A[0..23]
A[0..23]
IRDA_TXD
IRDA_RXD -WR
-WR
IRDA_SD -RD
-RD
-DIS_FLASH
-DIS_FLASH
-DIS_IRDA
-DIS_IRDA
PB[0..7]
PB[0..7]
-CSFLASH PC[0..7]
PC[0..7]
PD[0..7]
PD[0..7]
-RESFLASH
-CS[0..3]
-CS[0..3]
JTAG[1..4]
JTAG[1..4]
TDO
TDO
V3.3
V3.3_EXT
GND
GND_EXT
Schematic Diagrams
64