Appendix B.schematic Diagrams; Figure 9. Schematic Diagram #1 Of 4: Usb And Serial Interfaces - ZiLOG eZ80AcclaimPlus! User Manual

eZ80AcclaimPlus! Development Kit
User Manual
18
Appendix B. Schematic Diagrams
Figures 9 through 12 display schematic diagrams of the eZ80AcclaimPlus! Development Board and its interfaces.
P2 P2
1
3
2
PJ-007 PJ-007
L1 L1
FERRITE BEAD FERRITE BEAD
P3 P3
6 1
SH1 VBUS
7 2
SH2 DM
8 3
SH3 DP
9 4
SH4 ID
5
GND
C36 C36
0.01uF 0.01uF
USB-OTG, mini-AB USB-OTG, mini-AB
Appendix B
D1 D1
0.37V drop @1A
Need thermal pad 1
2
U6 U6
5 1 PMEG3020 PMEG3020
IN OUT
R14 R14 2
GND
20K 20K
4 3
EN OC
TPS2051B TPS2051B
R16 R16
D2 D2
2 1
1K 1K
YELL YELL
VCCIO
U8 U8
4
VCCIO TXD
20
VCC RXD
RTS
16
USBDM
CTS
15
USBDP
DTR
8
R17 R17
NC1 DSR
19
RESET DCD
24
100K 100K NC RI
27
OSCI CBUS0
28
OSCO CBUS1
CBUS2
17
3v3 OUT
CBUS3
C37 C37
CBUS4
0.1uF 0.1uF
FT232RL FT232RL
U10 U10
P4 P4
12
R1OUT R1IN
M1 1 9
R2OUT R2IN
6
2 14
T1OUT T1IN
7 7
T2OUT T2IN
3
8
C1+
4
C1-
9
C2+
M2 5 VCC_3v3
C2-
16
DB9 FEM/RT DB9 FEM/RT
VCC V+
15
GND V-
C40 C40 MAX3232 MAX3232
0.1uF 0.1uF

Figure 9. Schematic Diagram #1 of 4: USB and Serial Interfaces

VCC_5v
3
C33 C33
1uF 1uF
R15 R15
4.75K 4.75K
USB PWR
1
5
3
11
U9 U9
2
1 5
NC VCC
9 2
A
3 4
GND Y
10
6 74LVC1G04 74LVC1G04
23
22
13
14
12
RXD1
CTS1-
TXD1
RTS1-
13
8
11
10
1 C38 C38
3
4 0.1uF 0.1uF
5
C39 C39
2
6 0.1uF 0.1uF
C41 C41 C42 C42
0.1uF 0.1uF 0.1uF 0.1uF
U7 U7
1
IN
2 C34 C34
OUT
3 6
GND GND/TAB
4 1uF 1uF
NR/FB
5
EN
TPS73733DCQ TPS73733DCQ
C35 C35
0.015uF 0.015uF
WALL PWR
HDR/PIN 1x3 HDR/PIN 1x3
J12 J12
RXD0
TXD0
HDR/PIN 1x1 HDR/PIN 1x1
HDR/PIN 1x1 HDR/PIN 1x1
HDR/PIN 1x1 HDR/PIN 1x1
HDR/PIN 1x1 HDR/PIN 1x1
VCC_3v3
HDR/PIN 1x1 HDR/PIN 1x1
HDR/PIN 1x1 HDR/PIN 1x1
Z i l o g C o n f i d e n t i a l A l l R i g h t s R e s e r v e d Z i l o g C o n f i d e n t i a l A l l R i g h t s R e s e r v e d Z i l o g C o n f i d e n t i a l A l l R i g h t s R e s e r v e d
Z i l o g Z i l o g Z i l o g
1590 Buckeye Drive 1590 Buckeye Drive 1590 Buckeye Drive
Milpitas, CA 95035 Milpitas, CA 95035 Milpitas, CA 95035
408-513-1500 408-513-1500 408-513-1500
Website: www.zilog.com Website: www.zilog.com Website: www.zilog.com
Title Title Title
eZ80F91 Development Board eZ80F91 Development Board eZ80F91 Development Board
Page Page Page
USB AND SERIAL INTERFACE USB AND SERIAL INTERFACE USB AND SERIAL INTERFACE
VCC_3v3
J13 J13
1
J14 J14
1
J15 J15
1
J16 J16
1
J17 J17
1
J18 J18
1
UM024401-0412