VDRIVE2 Datasheet, PDF (5/8 Pages) Future Technology Devices International Ltd. – an easy solution for adding a USB Flash disk interface to an existing product

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checked to see if the data read was accepted. A ‘0’ level on SPI Data Out means that the data write was accepted. A
‘1’ indicates that the internal buffer is full, and the write should be repeated. Remember that CS must be held low for at
least one clock period before being taken high again to continue with the next read or write cycle.
Figure 4 - SPI Slave Data Timing Diagrams
T1
SPICLK
T2
SPICS /
SPI DATA IN
T3
T6
T4
T5
SPI DATA OUT
Table 4 - SPI Slave Data Timing
Time
T1
T2
T3
T4
T5
T6
T7
Description
SPICLK Period
SPICLK High
SPICLK Low
Input Setup Time
Input Hold Time
Output Hold Time
Output Valid Time
Table 5 - Status Register (ADD = ‘1’)
Bit
Description
0
RXF#
1
TXE#
2
-
3
-
4
RXF IRQEn
5
TXE IRQEn
6
-
7
-
Min
83
20
20
10
10
2
-
T7
Typical
-
-
-
-
-
-
-
Max
-
-
-
-
-
-
20
Unit
ns
ns
ns
ns
ns
ns
ns
VDrive2 Vinculum VNC1L Module
Datasheet Version 0.99
© Future Technology Devices International Ltd. 2007