GL651USB View Datasheet(PDF) - Genesys Logic
Part Name
Description
MFG CO.
'GL651USB' PDF : 16 Pages View PDF
GL651USB USB KEYBOARD HUB CONTROLLER
Endpoint2 (HUB) interrupt change indicator
LEDCTL
( offset 14, default = 00h )
R/W1C R/W1C
R/W1C R/W1C
--
--
P2_ON P1_ON
--
--
P2_TRX P1_TRX
Hub LED control flag:
P1_TRX
: upstream traffic happens on downstream port 1
P2_TRX
: upstream traffic happens on downstream port 2
P1_ON
P2_ON
: if 1’b1, LED is always on, otherwise, judge according to TRXFLAG
register.
: if 1’b1, LED is always on, otherwise, judge according to TRXFLAG
register.
KBSTUS
( offset 15, default = 0Fh )
R/W
R/W
R/W
R/W
R/W
KCONFIG KBADR6 KBADR5 KBADR4 KBADR3
Keyboard address and keyboard configuration.
R/W
KBADR2
R/W
KBADR1
R/W
KBADR0
REV
( offset 16, default = current revision )
R/O
R/O
R/O
R/O
R/O
R/O
REV7
REV6
REV5
REV4
REV3
REV2
This register returns current silicon revision number of this device.
Current revision is 8’h11. (Revision 1.1)
R/O
REV1
R/O
REV0
HUBSTUS
( offset 17, default = 00h )
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
HCONFIG DEVADR6 DEVADR5 DEVADR4 DEVADR3 DEVADR2 DEVADR1 DEVADR0
USB hub status registers. Procedure to set the device address:
1. After USB reset, the device responds to default address 0, and hub configuration = 0.
2. USB host controller issues SET_ADDRESS request to the device. (INTRB asserted)
3. Micro-controller recognizes the request, then set DEVADR register with appropriate value.
4. Micro-controller prepares the status stage of SET_ADDRESS request by programming
TXCTL0 register.
5. When the hub configuration value is not equal zero, HCONFIG is set to one.
USB reset will clear this register.
MODSEL
(offset 18, default = 07h)
R/O
R/O
R/O
R/O
R/O
R/O
R/O
R/O
MOD7 MOD6 MOD5 MOD4 MOD3 MOD2 MOD1 MOD0
MOD[7:0] is strapping value at initial state from GPIO[7:0]. GPIO[2:0] is default pull high for
keyboard LED control. F/W can utilize these bits for customization.
13
03/06/00
Version 1.0
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