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GL650USB Datasheet(PDF) 6 Page - List of Unclassifed Manufacturers

Part No. GL650USB
Description  USB 4 PORT HUB CONTROLLER
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Maker  ETC [List of Unclassifed Manufacturers]
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GL650USB Datasheet(HTML) 6 Page - List of Unclassifed Manufacturers

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6
08/18/00
GL650USB 4 PORT USB HUB CONTROLLER
Revision 1.2
5
REGISTER SUMMARY
MNEMONIC
OFFSET
DESCRIPTION
DEVCTL
00h
Device control register
EVTFLG
01h
USB function interrupt flag
RXCTL0
02h
Endpoint 0 RX control
TXCTL0
03h
Endpoint 0 TX control
TXCTL1
04h
Endpoint 1 TX control
FFDAT
05h
Data buffer (FIFO) I/O port
BUFCTL
06h
Data buffer control register
PORTSEL
07h
Hub port to be configured
HUB_STAT_CHG
08h
Hub status and status change indicator
PORT_STATUS
09h
Hub ports status indicator
BUS_PORT_DATA
0Ah
Hub ports status change indicator
HOST_CMD
0Bh
Host command to downstream ports
ENP1_IND
0Ch
Endpoint 1 indicator
TRXFLAG
0Dh
Downstream port traffic flag
LED_INIT
0Eh
LED initial state
GPIOD
0Fh
General purpose I/O pin status
REV
10h
Chip revision
DEVSTUS
11h
USB device address and configuration status
Register Description
Terminology:
R/O:
read only
R/W:
read / write
R/W1C:
read / write “1” to clear
W/O:
write only
DEVCTL
( offset 00, default = 00h )
R/W
R/W
R/W
R/O
R/O
USBRDY
SFRAME
PWRDN
--
--
--
SELF
GANG
USBRDY
: 0 - USB interface is not ready. The device drives USB with SE0.
1 - USB interface is ready. The device stops driving USB with SE0.
After power-on reset, USBRDY is cleared and the device looks like
disconnected. Set USBRDY to ‘1’ to enable USB interface.
SFRAME
: short frame option for test purpose
Set SFRAME to ‘1’ will shorten frame length to 1/15 ms. It is to shorten the
time required for test.
PWRDN
: power down mode
In suspend state, firmware can set PWRDN to put the controller into power
down mode. In this mode, the embedded micro-controller and most internal
activities are frozen. Hardware will automatically clear PWRDN upon
hardware reset or resume activities occur.


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