Document No.: FT_000589
FT313H USB2.0 HS Host Controller Datasheet Version 1.1
Clearance No.: FTDI# 318
Bit
Name
Type
Default value
Description
Dedicated charging port. USB host not
functional on this port, VBUS current limit ≤
1.5A.
10: Reserved
11: CDP
Charging downstream port, VBUS
current limit ≤ 1.5A.
12
11
Reserved
OSC_EN
-
1’b1
-
R/W
1’b1
Oscillator enable
0: Oscillator is not active
1: Oscillator is active
10
PLL_EN
R/W
1’b1
Internal PLL enable
0: PLL is disable
1: PLL is enable
9
8
Reserved
-
1’b1
1’b1
-
HC_CLK_EN
R/W
Host controller clock enable
0: clocks are disabled
1: clocks are enabled
7
VBUS_OFF
R/W
1’b1
VBUS power switch
This bit controls the voltage on the VBUS
on/off (default is “1”) by switch external
power switcher.
0: VBUS on, PSW_N signal is active LOW.
1: VBUS off, PSW_N signal is not active.
6
5
PORT_OC_EN
BCD_EN
R/W
R/W
1’b0
1’b1
Port overcurrent enable
0: disable over current detection
1: enable over current detection
BCD module enable
0: disable BCD module
1: enable BCD module
4
Reserved
RO
1’b0
-
[3: 2]
BURST_LEN
R/W
2’b00
DMA burst length
00: Single DMA burst
01: 4-cycle DMA burst
10: 8-cycle DMA burst
11: 16-cycle DMA burst
1
ENABLE_DMA
R/W
1’b0
Enable DMA
0: terminate DMA
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34
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