FT313HL-R FTDI, FT313HL-R Datasheet - Page 22

• Manufacturer Part Number: FT313HL-R
• Description: USB Interface IC USB High Speed USB Host Controller IC
• Manufacturer: FTDI

Specifications of FT313HL-R

• Rohs: yes
• Product: USB 2.0
• Data Rate: 480 Mbps
• Interface Type: USB
• Operating Supply Voltage: 1.62 V to 3.63 V
• Operating Supply Current: 35 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: LQFP-64
• Minimum Operating Temperature: - 40 C

5.2.3 HCCPARAMS register (address = 08h)
This is multiple mode control (time base bit functionality) and addressing capability.
Bit
[31:3]
2
1
0
Table 5-4 Capability parameter register
5.2.4 USBCMD register (address = 10h)
The command register indicates the command to be executed by the serial bus host controller. Writing to
the register causes a command to be executed.
Bit
[31:24]
[23:16]
Name
Reserved
ASPC
PFLF
Reserved
Name
Reserved
INT_THRC
Copyright © 2012 Future Technology Devices International Limited
Type
RO
RO
RO
RO
Type
RO
R/W
Default value
29’h0
1’b1
1’b1
1’b0
Default value
8’h0
8’h08
FT313H USB2.0 HS Host Controller Datasheet Version 1.1
Description
-
Asynchronous Schedule Park Capability
The host controller supports the park feature for
high-speed queue heads in the Asynchronous
Schedule. This feature can be disabled or
enabled and set to a specific level by using the
Asynchronous Schedule Park Mode Enable and
Asynchronous Schedule Park Mode Count fields
in the USBCMD register.
Programmable Frame List Flag
When this bit is set to 1b, the system software
can specify and use a smaller frame list and
configure the host controller via Frame List Size
field of the USBCMD register. This requirement
ensures that the frame list is always physically
contiguous.
-
Description
-
Interrupt Threshold Control
This field is used by the system software to
select the maximum rate at which the host
controller will issue the interrupts. The only
valid values are described as below:
Value Max Interrupt Interval for the high-speed
00h
01h
02h
04h
08h
10h
20h
40h
Reserved
No limited interval
2 micro-frames
4 micro-frames
8 micro-frames (Default, equals to 1 ms)
16 micro-frames (2 ms)
32 micro-frames (4 ms)
64 micro-frames (8 ms)
Document No.: FT_000589
Clearance No.: FTDI# 318
22