S3C2416X RISC MICROPROCESSOR
8.5 ENDPOINT DIRECTION REGISTER (EDR)
USB 2.0 Core supports IN/OUT direction control for each endpoint. This direction can't be changed dynamically.
Only by new enumeration, the direction can be altered. Since the endpoint 0 is bi-directional, there is no direction
bit assigned to it.
Register
Address
EDR
0x4980_0014
EDR
Bit
[31:9]
EP8DS
[8]
EP7DS
[7]
EP6DS
[6]
EP5DS
[5]
EP4DS
[4]
EP3DS
[3]
EP2DS
[2]
EP1DS
[1]
[0]
R/W
R/W
Endpoint direction register
R/W
−
Reserved
R/W
Endpoint 8 Direction Select
R/W
Endpoint 7 Direction Select
R/W
Endpoint 6 Direction Select
R/W
Endpoint 5 Direction Select
R/W
Endpoint 4 Direction Select
R/W
Endpoint 3 Direction Select
R/W
Endpoint 2 Direction Select
R/W
Endpoint 1 Direction Select
0 = Rx Endpoint
1 = Tx Endpoint
Reserved
−
Description
Description
USB2.0 DEVICE
Reset Value
0x0
Initial State
0
0
0
0
0
0
0
0
16-11