CY7C65620 Cypress Semiconductor Corporation., CY7C65620 Datasheet - Page 5

• Manufacturer Part Number: CY7C65620
• Description: Low-power Usb 2.0 Hub Controller Family
• Manufacturer: Cypress Semiconductor Corporation.

Table 1. Automatic Port State to Port Indicator Color Mapping
The LED control lines can also be modulated with a square wave
for power conservation. The polarity of these pins is program-
mable, see
In manual mode, the indicators are under the control of the host,
which can turn on the LEDs, or leave them off. This is done by a
USB Hub class request. Blinking of the LEDs is supported in
manual mode. The port indicators allow the user to intervene in
any error detection. For example, when babble is detected while
plugging in a defective device, or when an overcurrent condition
occurs, the port indicators corresponding to the downstream port
blink green or only light the amber LED, respectively.
Table 2
CY7C656xx is in manual mode.
Document #: 38-08037 Rev. *J
Note
Off or Amber, if due to an
Overcurrent Condition
1. Information presented in
Powered Off
displays the color definition of the indicators when
0xD4 Load
on page 13.
Table 1
and
Not Configured, Resetting, Testing
Off
[1]
Table 2
Disconnected, Disabled,
is from USB 2.0 specification Tables 11-6 and 11-7, respectively.
Downstream Facing Hub Port State
Green
Table 2. Port Indicator Color Definitions in Manual Mode
Off
Amber
Green
Blinking Off/Green
Blinking Off/Amber
Blinking Green/Amber
Enabled, Transmit, or
Color Definition
TransmitR
Off
Suspended, Resuming,
SendEOR, Restart_E/S
Not operational
Error condition
Fully Operational
Software Attention
Hardware Attention
Reserved
Port State
CY7C656xx
Page 5 of 25
[+] Feedback