VNC2 参数 Datasheet PDF下载

Document No.: FT_000138

VINCULUM-II EMBEDDED DUAL USB HOST CONTROLLER IC Datasheet

Version -

1.0

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 5-5 UART Example 64 pin

Copyright © 2010 Future Technology Devices International Limited

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