VNC1L-1A-TRAY FTDI, VNC1L-1A-TRAY Datasheet - Page 20

• Manufacturer Part Number: VNC1L-1A-TRAY
• Description: USB Interface IC USB Vinculum Host /Dev Ctrl IC LQFP-48
• Manufacturer: FTDI

Specifications of VNC1L-1A-TRAY

• Product Category: USB Interface IC
• Rohs: yes
• Operating Supply Voltage: 3.3 V
• Operating Supply Current: 25 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: LQFP-48
• Minimum Operating Temperature: - 40 C
• Factory Pack Quantity: 250

Figure 5.6 SPI Slave Mode Status Read
5.3 Parallel FIFO Interface
When VNC1L data and control buses are configured in the parallel FIFO interface mode, then it is
functionally equivalent to FTDI FT245R and FT245B devices.
5.3.1 Signal Descriptions
The Parallel FIFO interface signals are described in Table 5.9.
Table 5.9 Data and Control Bus Signal Mode Options - Parallel FIFO Interface
Pin No.
31
32
33
34
35
36
37
38
41
42
43
44
Name
RXF#
TXE#
RD#
WR
D0
D1
D2
D3
D4
D5
D6
D7
Copyright © 2009 Future Technology Devices International Limited
Output
Output
Input
Input
Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Vinculum VNC1L Embedded USB Host Controller IC Datasheet Version 2.02
Description
FIFO Data Bus Bit 0
FIFO Data Bus Bit 1
FIFO Data Bus Bit 2
FIFO Data Bus Bit 3
FIFO Data Bus Bit 4
FIFO Data Bus Bit 5
FIFO Data Bus Bit 6
FIFO Data Bus Bit 7
When high, do not read data from the FIFO.
When low, there is data available in the FIFO which can be read by strobing
RD# low, then high.
When high, do not write data into the FIFO.
When low, data can be written into the FIFO by strobing WR high, then low.
Enables the current FIFO data byte on D0...D7 when low. Fetches the next FIFO
data byte (if available) from the receive FIFO buffer when RD# goes from high
to low
Writes the data byte on the D0...D7 pins into the transmit FIFO buffer when WR
goes from high to low.
Document Reference No.: FT_000030
Clearance No.: FTDI# 50
20