Document No.: FT_000138
VINCULUM-II EMBEDDED DUAL USB HOST CONTROLLER IC Datasheet
Version -
1.2
Clearance No.: FTDI#
143
5.7
I/O Mux Interface Configuration Example
This example shows how to set a UART interface on the VNC2 64 pin package. The UART is made up of
two output signals (uart_txd and uart_rts#) and two input signals (uart_rxd and uart_cts#). For PCB
design it is best to have the four pins of the UART interface adjacent to each other. This can be achieved
easily since the four signals are members of each different groups.
clearly shows that the
four groups are adjacent to each other. So the four adjacent pins can be used for the UART interface as
long as they are selected one from each of the four groups. Tables 9, 10, 11 & 12 can now be used to
select where the UART interface can be placed.
shows the four UART signal selected on pins
11, 12, 13 & 14 however they could have been selected on any of the other four pins highlighted in blue
dashed lines.
54 38 21
2
3
11
12
13
14
15
V V
C C
C C
I I
O O
33
34
36
37
USB1DP
USB1DM
USB2DP
USB2DM
V
C
C
I
O
V
C
C
V
C
C
P
L
L
IOBUS0
IOBUS1
IOBUS2
IOBUS3
IOBUS4
uart_txd – group0
uart_rxd – group1
uart_rts# – group2
uart_cts# – group3
4
5
XTIN
XTOUT
9
10
RESET#
PROG#
VNC2
64 Pin
7
8
VREG OUT
TEST
16
IOBUS5
17
IOBUS6
18
IOBUS7
19
IOBUS8
20
IOBUS9
22
IOBUS10
23
IOBUS11
24
IOBUS12
25
IOBUS13
26
IOBUS14
27
IOBUS15
28
IOBUS16
29
IOBUS17
31
IOBUS18
32
IOBUS19
39
IOBUS20
40
IOBUS21
41
IOBUS22
42
IOBUS23
IOBUS24
IOBUS25
IOBUS26
IOBUS27
43
44
45
46
47
64
63
IOBUS43
IOBUS28
IOBUS42
62
IOBUS41
61
IOBUS40
60
IOBUS39
59
IOBUS38
58
IOBUS37
57
IOBUS36
48
IOBUS29
49
IOBUS30
50
IOBUS31
IOBUS32 51
52
IOBUS33
55
IOBUS34
56
IOBUS35
G
N
D
G
N
D
G
N
D
G
N
D
G P
N L
D L
1 6
30 35 53
Figure 5-6 UART Example 64 pin
Copyright © 2010 Future Technology Devices International Limited
37
FTDI [ FUTURE TECHNOLOGY DEVICES INTERNATIONAL LTD. ]
