USB2503A-HZH SMSC, USB2503A-HZH Datasheet - Page 31

• Manufacturer Part Number: USB2503A-HZH
• Description: IC HUB 3PORT USB COMPATBL 48-QFN
• Manufacturer: SMSC
• Type: Integrated USB Compatible 3 Port Hubr

Specifications of USB2503A-HZH

• Controller Type: USB Hub
• Interface: Serial EEPROM
• Voltage - Supply: 1.62 V ~ 3.6 V
• Current - Supply: 100mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-QFN
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 638-1030

Integrated USB 2.0 Compatible 3-Port Hub
Datasheet
SMSC USB2503/USB2503A
5.3.9.17
5.3.9.18
5.3.9.19
5.4
5.5
NUMBER
BIT
7:0
Default Configuration Option:
Default Strapping Options:
Register 10h: Power-On Time (Reset = 0x00)
Undefined Registers
The registers shown in
return 00h. Writes to undefined registers have no effect and do not return an error.
Reserved Registers
Unless otherwise instructed, only a ‘0’ may be written to all reserved registers or bits.
The SMSC Hub can be configured via its internal default configuration. (please see
Configuration 3-Port Hub
Please refer to
selected.
The SMSC Hub can be configured via a combination of internal default values and pin strap options.
Please see
default/pin-strap configuration option.
The strapping option pins only cover a limited sub-set of the configuration options. The internal default
values will be used for the bits & registers that are not controlled by a strapping option pin. Please
refer to
The Green LED pins are sampled after RESET_N negation, and the logic values are used to configure
the hub if the internal default configuration mode is selected. The implementation shown below (see
Figure
configuration, the LED functions with active low signalling, and the PAD will “sink” the current from the
external supply. When a pin is configured with a “Strap Low” configuration, the LED functions with
active high signalling, and the PAD will “source” the current to the external LED.
POWER_ON_TIME
BIT NAME
5.1) shows a recommended passive scheme. When a pin is configured with a “Strap High”
Table 5.1 on page 18
Table 4.1, "3-Port Hub Pin Descriptions"
Table 5.1 on page 18
Table 5.4
Power On Time: The length of time that it takes (in 2 ms intervals) from the
time the host initiated power-on sequence begins on a port until power is
good on that port.
for specific details on how to enable default configuration.
for the internal default values that are loaded when this option is selected.
are the defined registers in the Hub. Reads to undefined registers
DATASHEET
for the internal default values that are loaded when this option is
31
DESCRIPTION
for specific details on how to enable the
Revision 2.3 (08-27-07)
Chapter 3, Pin