Document No.: FT_000589
FT313H USB2.0 HS Host Controller Datasheet Version 1.1
Clearance No.: FTDI# 318
5.3.6 MEMADDR register (address = 90h)
Bit
Name
Type
Default value
Description
[15: 0]
START_ADDR_MEM R/W
16’b0
Start address for memory read / write
Internal 24K RAM memory address from
0x0000 to 0x5FFF.
Used by PIO and DMA.
Table 5-17 Memory address register
5.3.7 DATAPORT register (address = 92h)
Bit
Name
Type
Default value
Description
Data port
[15: 0]
DATA_PORT
R/W
16’b0
Read / write data from / to memory must go
through this port.
Used by PIO and DMA.
Table 5-18 Data port register
5.3.8 DATASESSION register (address = 94h)
Bit
Name
Type
Default value
Description
15
MEM_RW
R/W
1’b0
Memory read or write
0: Write data into memory
1: Read data from memory
Used by PIO and DMA
[14: 0]
DATA_LEN
R/W
15’b0
Data length for memory read or write
Preset the data length for memory read/write.
The max data length is 24K.
Used by PIO and DMA
Table 5-19 Data session length register
5.3.9 CONFIG register (address = 96h)
Bit
Name
Type
Default value
Description
15
BCD_MODE_CTRL
R/W
1’b0
BCD Mode override control
0: External CPE0 and CPE1 pins configuration
take effect.
1: BCD_MODE [1:0] register bits take effect
[14:13]
BCD_MODE[1:0]
R/W
2’b00
BCD Mode setting
00: SDP
Standard downstream port, VBUS
current limit ≥ 500mA.
01: DCP
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