FT313HQ-R datasheet(33/67 Pages) FTDI

33 / 67 page

Document No.: FT_000589

FT313H USB2.0 HS Host Controller Datasheet Version 1.2

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

[15: 0]

DATA_PORT

R/W

16’b0

Data port

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

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

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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