Document No.: FT_000138
VINCULUM-II EMBEDDED DUAL USB HOST CONTROLLER IC Datasheet
Version - 1.2
Clearance No.: FTDI# 143
6.4 Serial Peripheral Interface – SPI Master
CLK
SS#
External - SPI Slave
VNC2 - SPI Master
MOSI
MISO
Figure 6-20 SPI Master block diagram
The SPI Master interface is used to interface to applications such as SD Cards. The SPI Master provides
the following features:
Synchronous serial data link.
Full and half duplex data transmission.
Serial clock with programmable frequency, polarity and phase.
One slave select output.
Programmable delay between negative edge of slave select and start of transfer.
SD Card interface.
An interface that‟s compatible with the VLSI VS1033 SCI mode used for VMUSIC capability
The SPI Master only clocks in and out data that the VNC2 CPU sets up in its register space. The VNC2
CPU interprets the data words that are to be sent and received.
6.4.1 SPI Master Signal Descriptions.
Table 25 shows the SPI master signals and the available pins that they can be mapped to depending on
the package size. Further details on the configuration of input and output signals are available in Section
5 - I/O Multiplexer.
64 Pin
Package
48 Pin
Package
32 Pin
Package
Name
Type
Description
Available
pins
Available
pins
Available
pins
11, 15,
19, 24,
28, 39,
43, 47,
51, 57,
61
11, 15,
20, 31,
35, 41,
45
SPI master clock input
11, 23
29
spi_m_clk
Output
12, 16,
20, 25,
29, 40,
44, 48,
52, 58,
62
12,16,
21, 32,
36, 42,
46
Master Out Slave In
12, 24,
30
spi_m_mosi
Output
Input
Synchronous data from master to slave
Master In Slave Out
13, 17,
13, 18,
14, 25,
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