VNC2-48Q1B-REEL FTDI, VNC2-48Q1B-REEL Datasheet - Page 52

• Manufacturer Part Number: VNC2-48Q1B-REEL
• Description: USB Interface IC Vinculum-II Dual USB Host/Dev IC QFN-48
• Manufacturer: FTDI
• Type: USB Host/Device Controllerr

Specifications of VNC2-48Q1B-REEL

• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Temperature Range: - 40 C to + 85 C
• Supply Current: 25 mA
• Operating Supply Voltage: 1.8 V, 3.3V
• Package / Case: QFN-48
• Description/function: USB Vinculum-II Dual Host/Dev IC QFN-48
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: VINCULUM2

Figure 6-16 SPI Slave Mode Timing
Table 21 SPI Slave Data Timing
6.3.6.2 SPI Master Data Read Transaction in VNC1L legacy mode
The SPI master must periodically poll for new data in VNC2 Transmit Buffer. It is recommended that this
is done first before sending any command.
The Start and Setup sequence is sent to VNC2 by the SPI master, see Figure 6-17.
The VNC2 clocks out data from its Transmit Buffer on subsequent rising edge clock cycles provided by the
SPI master. This is followed by a status bit generated by VNC2. The Data Read status bit is defined in
Table 22.
If the status bit indicates New Data then the byte received is valid. If it indicates Old Data then the
Transmit Buffer in VNC2 is empty and the byte of data received in the current transaction should be
disregarded.
Time
T1
T2
T3
T4
T5
T6
MISO/SS hold time from
MISO/SS setup time to
SCLK driving edge to
sample SCLK edge
sample SCLK edge
SCLK high period
SCLK low period
SCLK period
MISO/MOSI
Description
Copyright © 2010 Future Technology Devices International Limited
VINCULUM-II EMBEDDED DUAL USB HOST CONTROLLER IC Datasheet
Minimum
79.37
39.68
39.68
0.5
3
Typical
83.33
41.67
41.67
Maximum
39.68
39.68
14
3
Document No.: FT_000138
Clearance No.: FTDI#
Unit
ns
ns
ns
ns
ns
ns
Version -
143
1.2
52