Figure 30. Ez80L92 Module Schematic Diagram, #9 Of 9-Control Logic - ZiLOG eZ80L92 User Manual

D[0..7]
D[0..7]
A[0..23]
A[0..23]
PD[0..7]
PD[0..7]
-RESET
-RESET
-WAIT
-WAIT
-DIS_FL
-DIS_FL
-DIS_IRDA
-DIS_IRDA
-RD
-RD
-WR
-WR
-CS[0..3]
-CS[0..3]
R30
10k
0603
-DIS_FL
R17
10k
0603
-DIS_IRDA
UM012906-0103
D[0..7]
A[0..23]
only A0,A1,A2,A3
are used here
PD3 and PD5
not used here
-RD
-CS3 = -CSETH
-WR
-CS1 and-CS2
not used
here
VDD
U2B
DIS_FL
3 4
-CS0
74LVC04/SO
U2C
DIS_IRDA
5 6
PD2 IR_SD
=
74LVC04/SO
Figure 30. eZ80L92 Module Schematic Diagram, #9 of 9—Control Logic
= SD[0..7]
SA[0..3]
A0 = SA0
A1 = SA1
A2 = SA2
A3 = SA3
VDD
U6D
12
-ETHRD
11
13
74LCX32
TSSOP14
U6A
1
-ETHWR
3
2
74LCX32
TSSOP14
U6B
4
-CSFLASH
6
5
74LCX32
TSSOP14
U6C
9
IRDA_SD
8
10
74LCX32
TSSOP14
VDD
VSS
PRELIMINARY
eZ80L92 Development Kit
SD[0..7]
SA[0..3]
-ETHRD
-ETHWR
PD4 = ETHIRQ
R14
0R
PD7 -SLEEP
R15 0R
PD6 -ACTIVE
don't stuff
R35 0
-WAIT
PD0 = IRDA_TXD
PD1 = IRDA_RXD
IRDA_SD
-RESET = -RESFLASH
-CSFLASH
V3.3
GND
User Manual
76
SD[0..7]
SA[0..3]
-ETHRD
-ETHWR
ETHIRQ
-SLEEP
-ACTIVE
IOCHRDY
IRDA_TXD
IRDA_RXD
IRDA_SD
-RESFLASH
-CSFLASH
Schematic Diagrams