USB2507 查看數據表（PDF） - Microchip Technology
零件编号
产品描述 (功能)
生产厂家
USB2507 Datasheet PDF : 42 Pages
| |||
USB2507
Bit Number
4
3
2:1
Bit Name
MTT_ENABLE
EOP_DISABLE
CURRENT_SNS
Description
Multi-TT enable: Enables one transaction translator per port operation.
0 = single TT for all ports.
1 = one TT per port (multiple TT’s supported)
EOP Disable: Disables EOP generation at EOF1 when no downstream
directed traffic is in progress.
0 = EOP generation at EOF1 is enabled.
1 = EOP generation at EOF1 is disabled, (normal operation). (Default)
Over Current Sense: Indicates whether current sensing is on a port-by-port
basis, or ganged.
00 = Ganged sensing (all ports together). (Default for self-power)
01 = Individual port-by-port.
0
5.2.3.5
PORT_PWR
Port Power Switching: Indicates whether port power switching is on a port-by-
port basis or ganged.
0 = Ganged switching (all ports together)
1 = Individual port-by-port switching.
EEPROM Offset 7(h) - CONFIG_BYTE_2
Bit Number
7
6
5:4
3
2:0
Bit Name
DYNAMIC
Reserved
OC_TIMER
COMPOUND
Reserved
Description
Dynamic Power Enable: Controls the ability for the Hub to transition to Bus-
Powered operation if the local power source is removed (can revert back to
Self-Power if local power source is restored).
0 = No Dynamic auto-switching.
1 = Dynamic Auto-switching capable.(Default)
Reserved
OverCurrent Timer: Over Current Timer delay.
00 = 0.1ms
01 = 2ms (Default)
10 = 4ms
11 = 6ms
Compound Device: Designates if Hub is part of a compound device.
0 = No. (Default)
1 = Yes, Hub is part of a compound device.
Reserved.
5.2.3.6 EEPROM Offset 8(h) - Non-Removable Device
Bit Number
7:0
Bit Name
NR_DEVICE
Description
Non-Removable Device: Indicates which port(s) include non-removable devic-
es. ‘0’ = port is removable, ‘1’ = port is non-removable.
Bit 7= 1; Port 7 non-removable.
Bit 6= 1; Port 6 non-removable.
Bit 5= 1; Port 5 non removable.
Bit 4= 1; Port 4 non-removable.
Bit 3= 1; Port 3 non-removable.
Bit 2= 1; Port 2 non-removable.
Bit 1= 1; Port 1 non removable.
Bit 0 is Reserved, always = ‘0’.
2007 - 2016 Microchip Technology Inc.
DS000002251A-page 17
Share Link: 