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PRELIMINARY
USB2.0 HS OTG
S3C6400X RISC MICROPROCESSOR
26-42
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
HOST CHANNEL-SPECIFIC REGISTERS
HOST CHANNEL-n CHARACTERISTICS REGISTER (HCCHARn)
Channel_number: 0
≤
n
≤
15
Register
Address
R/W
Description
Reset Value
HCCHARn 0x7C00_0500
+n*20h
R/W
Host Channel-n Characteristics Register
32 bits
HCCHARn
Bit
R/W
Description
Initial State
ChEna [31]
R_WS_
SC
Channel Enable
This field is set by the application and cleared by the
OTG host.
·
1’b0 : Channel disabled
· 1’b1 : Channel enabled
1’b0
ChDis [30]
R_WS_
SC
Channel Disable
The application sets this bit to stop
transmitting/receiving data on a channel, even
before the transfer for that channel is complete. The
application must wait for the Channel Disabled
interrupt before treating the channel as disabled.
1’b0
OddFrm
[29]
R_W
Odd Frame
This field is set (reset) by the application to indicate
that the OTG host must perform a transfer in an odd
(micro)frame. This field is applicable for only periodic
transactions.
·
1’b0 : Even (micro)frame
· 1’b1 : Odd (micro)frame
1’b0
DevAddr
[28:22]
R_W
Device Address
This field selects the specific device serving as the
data source or sink.
7’h0
MC/EC
[21:20]
R_W
Multi Count/Error Count
When the Split Enable bit of the Host Channel-n Split
Control register is reset (1’b0), this field indicates to
the host the number of transactions that must be
executed per microframe for this endpoint.
·
2’b00 : Reserved
·
2’b01 : 1 transaction
·
2’b10 : 2 transactions to be issued for this endpoint
per microframe
·
2’b11 : 3 transactions to be issued for this endpoint
per microframe
When HCSPLTn.SpltEna is set, this field indicates
the number of immediate retries to be performed for
a periodic split transactions on transaction errors.
2’b0