DS_FT313H Datasheet, PDF (29/64 Pages) Future Technology Devices International Ltd. – The FT313H is a Hi-Speed Universal Serial Bus (USB) Host Controller compatible with Universal Serial Bus Specification Rev 2.0 and supports data transfer speeds of up to 480M bit/s.

Document No.: FT_000589
FT313H USB2.0 HS Host Controller Datasheet Version 1.1
Clearance No.: FTDI# 318
Bit
Name
Type Default value
Table 5-11 Port status and control register
Description
This value reflects the current state of the port,
and may not correspond directly to cause the
Connect Status Change bit to be set.
5.3 Configuration registers
5.3.1 EOTTIME register (address = 34h)
Bit
Name
[31:7]
6
Reserved
U_SUSP_N
[5:4]
EOF2_TIME
Type
RO
R/W
R/W
Default Description
value
25’h0
1’b1
-
Transceiver Suspend Mode
Active low
2’b00
Places the transceiver in the suspend mode that draws
the minimal power from the power supplies. This is
part of the power management.
EOF 2 Timing Points
Control EOF2 timing point before next SOF.
High-Speed EOF2 Time
00b 2 clocks (30 MHz) = 66 ns
01b 4 clocks (30 MHz) = 133 ns
10b 8 clocks (30 MHz) = 266 ns
11b 16 clocks (30 MHz) = 533 ns
[3:2]
Full-Speed EOF2 Time
00b 20 clocks (30 MHz)=8 clocks (12 MHz) = 666 ns
01b 40 clocks (30 MHz)=16 clocks (12 MHz) = 1.333 µs
10b 80 clocks (30 MHz) = 32 clocks (12 MHz) = 2.66 µs
11b 160 clocks (30 MHz) = 64 clocks (12 MHz) = 5.3 µs
EOF1_TIME
R/W 2’b00
Low-Speed EOF2 Time
00b 40 clocks (30 MHz) = 16 clocks (12 MHz) = 1.33 µs
01b 80 clocks (30 MHz) = 32 clocks (12 MHz) = 2.66 µs
10b 160 clocks (30 MHz) = 64 clocks (12 MHz) = 5.33 µs
11b 320 clocks (30 MHz) = 128 clocks (12 MHz) = 10.66 µs
EOF 1 Timing Points
Controls the EOF1 timing point before next SOF.
This value should be adjusted according to the
maximum packet size.
High-Speed EOF1 Time
00b 540 clocks (30 MHz) = 18 µs
01b 360 clocks (30 MHz) = 12 µs
10b 180 clocks (30 MHz) = 6 µs
11b 720 clocks (30 MHz) = 24 µs
Full-Speed EOF1 Time
00b 1600 clocks (30 MHz) = 640 clocks (12 MHz) = 53.3 µs
01b 1400 clocks (30 MHz) = 560 clocks (12 MHz) = 46.6 µs
10b 1200 clocks (30 MHz) = 480 clocks (12 MHz) = 40 µs
11b 21000 clocks (30 MHz) = 8400 clocks (12 MHz)=700 µs
Low-Speed EOF1 Time
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