Port0:191H / Port1:391H H_Chaconfig_1(Host Channel A Configuration1) - Epson S2R72V18 Technical Manual

3.3.42

Port0:191h / Port1:391h H_CHaConfig_1(Host Channel a Configuration1)

Base Address: Port0=000h, Port1=200h
Mode Ofst Adrs Register Name
Host 191h H_CHaConfig_1
This sets the basic channel CHa settings for host operations.
Bit7-6 TID[1:0]
This sets the transaction type (OUT/IN) to be issued with channel CHa. This bit setting is disabled
when the H_CHaBO_SupportCtl register BO_SupportGo bit is set to "1" and the transaction is
started.
00: Reserved − Use of this value is prohibited.
01: OUT
10: IN
11: Reserved − Use of this value is prohibited.
This bit does not need to be set when using the bulk-only support function.
Bit5-4 Reserved
Bit3 AutoZerolen
Setting this bit to "1" automatically adds a zero-length packet after the transfer size set in the
H_CHaTotalSizeHH to LL registers ends at exactly the Max Packet Size. This bit is enabled only
for OUT transfers.
Bit2-1 Reserved
Bit0 TotalSizeFree
Setting this bit to "1" cancels any restrictions on transfer size, regardless of H_CHaTotalSizeHH to
LL register settings.
S2R72V18 Technical Manual (Rev.1.00)
R/W Bit Symbol
7: TID[1]
R/W
6: TID[0]
5:
4:
R/W 3: AutoZerolen
2:
1:
R/W 0: TotalSizeFree
− Issues an OUT token.
− Issues an IN token.
EPSON
Description
Transaction ID
0:
0:
0: Do nothing
0:
0:
0: Do nothing
3. Register Details
1:
1:
1: Add Zerolen
1:
1:
1: Total Size Free
Reset
00h
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