cdc-mega.pdf
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Pobierz
cdc-mega.xls
2006/8/14
Akira Kitazawa
The AVR-CDC Evaluation Report (ATmega48)
1. Test Scheme
1.1 Connection
PC No.1
TeraTerm
UART
AVRCDC
USB
PC No.2
TeraTerm (Windows)
minicom (Linux)
8N1, FlowControl: none
No other USB devices connected to the target Host Controller on PC No.2.
1.2 Procedure
(1) Transmit text data (670kB) from PC1 to PC2.
(2) Transmit the received text on PC2 back to PC1.
(3) Compare the returned text.
(4) Repeat (1)-(3) 3 times.
2. Result - Rx Interrupt
PC No.1: NT-5000 (EPSON DIRECT) Mobile Pentium4 2GHz, RAM512MB, Windows2000 SP4
Model
(PC No.2)
Vendor
PC Spec.
OS / Driver (Version) USB Host Controller Driver
USB Interface
USB Host Controller
Result
Max.
Baudrate
(Half duplex)
Max.
Baudrate
(Full duplex)
Cause
MX4GER
AOpen
Pentium4
2.4GHz
RAM 512MB
KNOPPIX 3.7
Kernel 2.4.27
acm.c : v0.21
usb-uhci.c Rev 1.275
on-board
SouthBridge Intel 845G(ICH4)
OK
38.4kbps
*5
usb-ohci.c v5.3
RATOC REX-PCIU3
PCI
NEC uPD720101
OK
57.6kbps
*5
usb-uhci.c Rev 1.275
KurotoShiko USB2.0V3-PCI PCI
VIA VT6202
OK
38.4kbps
*5
usb-uhci.c Rev 1.275
KurotoShiko USB2.0V5-PCI PCI
VIA VT6212L
OK
38.4kbps
*5
usb-ohci.c v5.3
ALI USB2ALI1-B01
PCI
ALi M5273
OK
57.6kbps
*5
uhci.c v1.1
IODATA CBUS2L
CardBus
VIA VT6212L
OK
38.4kbps
*5
usb-ohci.c v5.3
UnionBros UBH004
CardBus
OPTi 82C861
OK
57.6kbps
*5
usb-ohci.c v5.3
RATOC REX-CBU2X
CardBus
NEC uPD720101
OK
57.6kbps
*5
usb-ohci.c v5.3
BUFFALO IFC-USB2CB
CardBus
NEC uPD720100A
OK
57.6kbps
*5
KNOPPIX 5.0.1
Kernel 2.6.17
usb-acm : v0.25
uhci_hcd.c v3.0
on-board
SouthBridge Intel 845G(ICH4)
NG *1
-
-
Low speed bulk transfer
prohibited in uhci_hcd.c.
ohci_hcd.c 2005 April 22
RATOC REX-PCIU3
PCI
NEC uPD720101
OK
19.2kbps
*5
uhci_hcd.c v3.0
KurotoShiko USB2.0V3-PCI PCI
VIA VT6202
NG *1
-
-
Low speed bulk transfer
prohibited in uhci_hcd.c.
uhci_hcd.c v3.0
KurotoShiko USB2.0V5-PCI PCI
VIA VT6212L
NG *1
-
-
Low speed bulk transfer
prohibited in uhci_hcd.c.
ohci_hcd.c 2005 April 22
ALI USB2ALI1-B01
PCI
ALi M5273
OK
19.2kbps
*5
uhci_hcd.c v3.0
IODATA CBUS2L
CardBus
VIA VT6212L
NG *1
-
-
Low speed bulk transfer
prohibited in uhci_hcd.c.
ohci_hcd.c 2005 April 22
UnionBros UBH004
CardBus
OPTi 82C861
OK
19.2kbps
*5
ohci_hcd.c 2005 April 22
RATOC REX-CBU2X
CardBus
NEC uPD720101
OK
19.2kbps
*5
ohci_hcd.c 2005 April 22
BUFFALO IFC-USB2CB
CardBus
NEC uPD720100A
OK
19.2kbps
*5
Debian 3.1_rc2
Kernel 2.6.8-2-386
usb-acm : v0.23
uhci_hcd.c with Patch
on-board
SouthBridge Intel 845G(ICH4)
OK *2
38.4kbps
*5
ohci_hcd.c 2004 Feq 02
RATOC REX-PCIU3
PCI
NEC uPD720101
OK
19.2kbps
*5
uhci_hcd.c with Patch
KurotoShiko USB2.0V3-PCI PCI
VIA VT6202
OK *2
38.4kbps
*5
Transmission may not be
begun rarely.
uhci_hcd.c with Patch
KurotoShiko USB2.0V5-PCI PCI
VIA VT6212L
OK *2
38.4kbps
*5
Transmission may not be
begun rarely.
ohci_hcd.c 2004 Feq 02
ALI USB2ALI1-B01
PCI
ALi M5273
OK
19.2kbps
*5
Out-data (USB->RS232C)
corrupts very rarely.
uhci_hcd.c with Patch
IODATA CBUS2L
CardBus
VIA VT6212L
OK *2
38.4kbps
*5
ohci_hcd.c 2004 Feq 02
UnionBros UBH004
CardBus
OPTi 82C861
OK
19.2kbps
*5
ohci_hcd.c 2004 Feq 02
RATOC REX-CBU2X
CardBus
NEC uPD720101
OK
19.2kbps
*5
ohci_hcd.c 2004 Feq 02
BUFFALO IFC-USB2CB
CardBus
NEC uPD720100A
OK
19.2kbps
*5
Windows 2000 SP4
[UHCI]
on-board
SouthBridge Intel 845G(ICH4)
OK
38.4kbps
*3
[OHCI]
RATOC REX-PCIU3
PCI
NEC uPD720101
OK
57.6kbps
*3
[UHCI]
KurotoShiko USB2.0V3-PCI PCI
VIA VT6202
OK
38.4kbps
*3
[UHCI]
KurotoShiko USB2.0V5-PCI PCI
VIA VT6212L
OK
38.4kbps
*3
[OHCI]
ALI USB2ALI1-B01
PCI
ALi M5273
OK
57.6kbps
*3
[UHCI]
IODATA CBUS2L
CardBus
VIA VT6212L
OK
38.4kbps
*3
[OHCI]
UnionBros UBH004
CardBus
OPTi 82C861
OK
57.6kbps
*3
[OHCI]
RATOC REX-CBU2X
CardBus
NEC uPD720101
OK
57.6kbps
*3
[OHCI]
BUFFALO IFC-USB2CB
CardBus
NEC uPD720100A
OK
57.6kbps
*3
Windows XP SP2
[UHCI]
on-board
SouthBridge Intel 845G(ICH4)
OK
57.6kbps
57.6kbps
[OHCI]
RATOC REX-PCIU3
PCI
NEC uPD720101
OK
115.2kbps
57.6kbps
[UHCI]
KurotoShiko USB2.0V3-PCI PCI
VIA VT6202
OK
57.6kbps
57.6kbps
[UHCI]
KurotoShiko USB2.0V5-PCI PCI
VIA VT6212L
(OK)
57.6kbps
57.6kbps *4
[OHCI]
ALI USB2ALI1-B01
PCI
ALi M5273
OK
57.6kbps
57.6kbps
[UHCI]
IODATA CBUS2L
CardBus
VIA VT6212L
(OK)
57.6kbps
57.6kbps *4
[OHCI]
UnionBros UBH004
CardBus
OPTi 82C861
OK
115.2kbps
38.4kbps
Teraterm hangs at a high-
speed full duplex transfer.
[OHCI]
RATOC REX-CBU2X
CardBus
NEC uPD720101
OK
115.2kbps
115.2kbps
[OHCI]
BUFFALO IFC-USB2CB
CardBus
NEC uPD720100A
OK
115.2kbps
115.2kbps
WL2120
SOTEC
Mobile Celeron
1.2GHz
RAM:384MB
Windows XP SP2
[OHCI]
on-board
SiS7001
OK
57.6kbps
57.6kbps
[UHCI]
IODATA CBUS2L
CardBus
VIA VT6212L
(OK)
19.2kbps
9600bps *4
[OHCI]
UnionBros UBH004
CardBus
OPTi 82C861
OK
57.6kbps
9600bps
Teraterm hangs at a high-
speed (>57.6Kbps) full
duplex transfer.
[OHCI]
RATOC REX-CBU2X
CardBus
NEC uPD720101
OK
57.6kbps
57.6kbps
[OHCI]
BUFFALO IFC-USB2CB
CardBus
NEC uPD720100A
OK
57.6kbps
57.6kbps
Thinkpad X20
IBM
Pentium3
700MHz
RAM:384MB
Windows 2000 SP4
[UHCI]
on-board
SouthBridge Intel 440ZXM
NG
-
*3
IN response stops because
of rx interrupt.
*1 : may work if uhci_q.c is modified (not tested).
*2 : usb_uhci.c (v2.2) has been modified to enable bulk transfer.
*3 : In Windows2000, it seems that IN request is not issued while retrying OUT request.
*4 : Data corrupts at OUT direction (USB->RS232C) in full duplex transfer, not due to baudrate.
*5 : minicom can not receive data during transmission.
3. Result - Rx Polling
PC No.1 : NT-5000 (EPSON DIRECT) Mobile Pentium4 2GHz, RAM512MB, Windows2000 SP4
Model
(PC No.2)
Vendor
PC Spec.
OS / Driver (Version) USB Host Controller Driver
USB Interface
USB Host Controller
Result
Max.
Baudrate
(Half duplex)
Max.
Baudrate
(Full duplex)
Cause
MX4GER
AOpen Pentium4
2.4GHz
RAM 512MB
KNOPPIX 3.7
Kernel 2.4.27
acm.c : v0.21
usb-uhci.c Rev 1.275
on-board
SouthBridge Intel 845G(ICH4)
usb-ohci.c v5.3
RATOC REX-PCIU3
PCI
NEC uPD720101
usb-uhci.c Rev 1.275
KurotoShiko USB2.0V3-PCI PCI
VIA VT6202
usb-uhci.c Rev 1.275
KurotoShiko USB2.0V5-PCI PCI
VIA VT6212L
usb-ohci.c v5.3
ALI USB2ALI1-B01
PCI
ALi M5273
uhci.c v1.1
IODATA CBUS2L
CardBus
VIA VT6212L
usb-ohci.c v5.3
UnionBros UBH004
CardBus
OPTi 82C861
usb-ohci.c v5.3
RATOC REX-CBU2X
CardBus
NEC uPD720101
usb-ohci.c v5.3
BUFFALO IFC-USB2CB
CardBus
NEC uPD720100A
KNOPPIX 5.0.1
Kernel 2.6.17
usb-acm : v0.25
uhci_hcd.c v3.0
on-board
SouthBridge Intel 845G(ICH4)
ohci_hcd.c 2005 April 22
RATOC REX-PCIU3
PCI
NEC uPD720101
uhci_hcd.c v3.0
KurotoShiko USB2.0V3-PCI PCI
VIA VT6202
uhci_hcd.c v3.0
KurotoShiko USB2.0V5-PCI PCI
VIA VT6212L
ohci_hcd.c 2005 April 22
ALI USB2ALI1-B01
PCI
ALi M5273
uhci_hcd.c v3.0
IODATA CBUS2L
CardBus
VIA VT6212L
ohci_hcd.c 2005 April 22
UnionBros UBH004
CardBus
OPTi 82C861
ohci_hcd.c 2005 April 22
RATOC REX-CBU2X
CardBus
NEC uPD720101
ohci_hcd.c 2005 April 22
BUFFALO IFC-USB2CB
CardBus
NEC uPD720100A
Debian 3.1_rc2
Kernel 2.6.8-2-386
usb-acm : v0.23
uhci_hcd.c with Patch
on-board
SouthBridge Intel 845G(ICH4)
ohci_hcd.c 2004 Feq 02
RATOC REX-PCIU3
PCI
NEC uPD720101
uhci_hcd.c with Patch
KurotoShiko USB2.0V3-PCI PCI
VIA VT6202
uhci_hcd.c with Patch
KurotoShiko USB2.0V5-PCI PCI
VIA VT6212L
ohci_hcd.c 2004 Feq 02
ALI USB2ALI1-B01
PCI
ALi M5273
uhci_hcd.c with Patch
IODATA CBUS2L
CardBus
VIA VT6212L
ohci_hcd.c 2004 Feq 02
UnionBros UBH004
CardBus
OPTi 82C861
ohci_hcd.c 2004 Feq 02
RATOC REX-CBU2X
CardBus
NEC uPD720101
ohci_hcd.c 2004 Feq 02
BUFFALO IFC-USB2CB
CardBus
NEC uPD720100A
Windows 2000 SP4
[UHCI]
on-board
SouthBridge Intel 845G(ICH4)
[OHCI]
RATOC REX-PCIU3
PCI
NEC uPD720101
[UHCI]
KurotoShiko USB2.0V3-PCI PCI
VIA VT6202
[UHCI]
KurotoShiko USB2.0V5-PCI PCI
VIA VT6212L
[OHCI]
ALI USB2ALI1-B01
PCI
ALi M5273
[UHCI]
IODATA CBUS2L
CardBus
VIA VT6212L
[OHCI]
UnionBros UBH004
CardBus
OPTi 82C861
[OHCI]
RATOC REX-CBU2X
CardBus
NEC uPD720101
[OHCI]
BUFFALO IFC-USB2CB
CardBus
NEC uPD720100A
Windows XP SP2
[UHCI]
on-board
SouthBridge Intel 845G(ICH4)
OK
38.4kbps
19.2kbps
[OHCI]
RATOC REX-PCIU3
PCI
NEC uPD720101
OK
38.4kbps
19.2kbps
[UHCI]
KurotoShiko USB2.0V3-PCI PCI
VIA VT6202
OK
38.4kbps
19.2kbps
[UHCI]
KurotoShiko USB2.0V5-PCI PCI
VIA VT6212L
OK
38.4kbps
19.2kbps
[OHCI]
ALI USB2ALI1-B01
PCI
ALi M5273
OK
38.4kbps
19.2kbps
[UHCI]
IODATA CBUS2L
CardBus
VIA VT6212L
OK
38.4kbps
19.2kbps
[OHCI]
UnionBros UBH004
CardBus
OPTi 82C861
OK
38.4kbps
19.2kbps
[OHCI]
RATOC REX-CBU2X
CardBus
NEC uPD720101
OK
38.4kbps
19.2kbps
[OHCI]
BUFFALO IFC-USB2CB
CardBus
NEC uPD720100A
OK
38.4kbps
19.2kbps
WL2120
SOTEC Mobile Celeron
1.2GHz
RAM:384MB
Windows XP SP2
[OHCI]
on-board
SiS7001
OK
19.2kbps
19.2kbps
[UHCI]
IODATA CBUS2L
CardBus
VIA VT6212L
(OK)
19.2kbps
*2
[OHCI]
UnionBros UBH004
CardBus
OPTi 82C861
OK
19.2kbps
19.2kbps
[OHCI]
RATOC REX-CBU2X
CardBus
NEC uPD720101
OK
19.2kbps
19.2kbps
[OHCI]
BUFFALO IFC-USB2CB
CardBus
NEC uPD720100A
OK
19.2kbps
19.2kbps
Thinkpad X20 IBM
Pentium3
700MHz
RAM 384MB
Windows 2000 SP4
[UHCI]
on-board
SouthBridge Intel 440ZXM
OK
19.2kbps
*1
*1 : In Windows2000, it seems that IN request is not issued while retrying OUT request.
*2 : Data corrupts at IN process in full duplex transfer, not due to baudrate.
4. Comment
(1) Windows Driver and its Version
Windows 2000 SP4
[OHCI Host Driver]
openhci.sys 5.00.2195.6675
usbd.sys 5.00.2195.6658
usbhub.sys 5.00.2195.6689
usbui.dll 5.00.2134.1
[UHCI Host Driver]
uhcd.sys 5.00.2195.6655
usbd.sys 5.00.2195.6658
usbhub.sys 5.00.2195.6689
usbui.dll 5.00.2134.1
[Serial Port Driver]
usbser.sys 5.00.2195.6655
Windows XP SP2
[OHCI Host Driver]
usbhub.sys 5.1.2600.2180
usbohci.sys 5.1.2600.2180
usbport.sys 5.1.2600.2180
usbui.dll 5.1.2600.2180
[UCHI Host Driver]
usbhub.sys 5.1.2600.2180
usbport.sys 5.1.2600.2180
usbuhci.sys 5.1.2600.2180
usbui.dll 5.1.2600.2180
[Serial Port Driver]
usbser.sys 5.1.2600.2180
(2) Linux: CDC device is recognized as /dev/ttyACM0
Plik z chomika:
roman61
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