Zilog EZ80F91GA - Manual (Page 121)

UM024502-1012 Schematic Diagrams
ZGATE Embedded Security Development Kit
User Manual
111
Appendix B. Schematic Diagrams
Figures 18 through 21 display schematic diagrams of the ZGATE Embedded Security Development Board and its interfaces.
Figure 18. Schematic Diagram #1 of 4: USB and Serial Interfaces
USB PWR WALL PWR
0.37V drop @1A
Need thermal pad
VCCIO
VCC_5v
VCC_3v3
VCC_3v3
VCC_3v3
TXD1
RTS1-
RXD1
CTS1-
RXD0
TXD0
Title
Zilog
1590 Buckeye Drive
Milpitas, CA 95035
408-513-1500
Website: www.zilog.com
Page
Zilog Confidential All Rights Reserved
eZ80F91 Development Board
USB AND SERIAL INTERFACE
Title
Zilog
1590 Buckeye Drive
Milpitas, CA 95035
408-513-1500
Website: www.zilog.com
Page
Zilog Confidential All Rights Reserved
eZ80F91 Development Board
USB AND SERIAL INTERFACE
Title
Zilog
1590 Buckeye Drive
Milpitas, CA 95035
408-513-1500
Website: www.zilog.com
Page
Zilog Confidential All Rights Reserved
eZ80F91 Development Board
USB AND SERIAL INTERFACE
J12
HDR/PIN 1x3
J12 HDR/PIN 1x3
1 2 3
D2
YELL
D2
YELL
2 1
C38
0.1uF
C38
0.1uF
J14
HDR/PIN 1x1
J14
HDR/PIN 1x1
1
U9
74LVC1G04
U9
74LVC1G04
NC
1
A
2
GND
3
Y
4
VCC
5
C39
0.1uF
C39
0.1uF
C35
0.015uF
C35
0.015uF
J15
HDR/PIN 1x1
J15
HDR/PIN 1x1
1
P2
PJ-007
P2
PJ-007
1
2
3
C37
0.1uF
C37
0.1uF
C33
1uF
C33
1uF
C42
0.1uF
C42
0.1uF
J16
HDR/PIN 1x1
J16
HDR/PIN 1x1
1
R14
20K R14
20K
R15
4.75K R15
4.75K
U8
FT232RL
U8
FT232RL
USBDM
16 RTS
3
GND1
7
RI
6
NC1
8
DTR
2
VCCIO
4
3v3 OUT
17
NC
24
RESET
19
TXD
1
USBDP
15
CBUS3
14
OSCI
27
OSCO
28
GND2
18
TEST
26
CBUS1
22
GND3
21
DCD
10
CTS
11
DSR
9
RXD
5
CBUS4
12
CBUS2
13
AG
ND
25
CBUS0
23
VCC
20
P4
DB9 FEM/RT
P4
DB9 FEM/RT
1
6
2
7
3
8
4
9
5 M1
M2
L1
FERRITE BEAD
L1
FERRITE BEAD
D1
PMEG3020
D1
PMEG3020
3
2
1
C41
0.1uF
C41
0.1uF
J17
HDR/PIN 1x1
J17
HDR/PIN 1x1
1
U7
TPS73733DCQ
U7
TPS73733DCQ
OUT
2 IN
1
GND
3
EN
5 NR/FB
4 GND/TAB
6
P3
USB-OTG, mini-AB
P3
USB-OTG, mini-AB
VBUS
1
DM
2
DP
3
ID
4
GND
5
SH1
6
SH2
7
SH3
8
SH4
9
C34
1uF
C34
1uF
R17
100K
R17
100K
U10
MAX3232
U10
MAX3232
C1+
1
C1-
3
C2+
4
C2-
5
T1IN
11
T2IN
10
R1OUT
12
R2OUT
9
VCC
16
V+
2
V-
6
T1OUT
14
T2OUT
7
R1IN
13
R2IN
8
GND
15
R16
1K
R16
1K
C36
0.01uF
C36
0.01uF
J18
HDR/PIN 1x1
J18
HDR/PIN 1x1
1
C40
0.1uF
C40
0.1uF
U6
TPS2051B
U6
TPS2051B
OUT
1
GND
2
OC
3
EN
4
IN
5
J13
HDR/PIN 1x1
J13
HDR/PIN 1x1
1