USB2512 SMSC Corporation, USB2512 Datasheet - Page 11

• Manufacturer Part Number: USB2512
• Description: USB 2.0 High-Speed 2-Port Hub Controller
• Manufacturer: SMSC Corporation

Revision 1.92 (11-28-07)
PACKAGE SYMBOL
VDD33/VDD33CR
CFG_SEL1
VDD33PLL
VDDPLL18
VDDA33
VDD18
0
1
1
NC
CFG_SEL0
36-QFN EMB
Table 3.2 SMBus or EEPROM Interface Behavior (continued)
1
0
1
Table 3.3 USB2512 Power, Ground, and No Connect
14
36
34
10
29
23
15
18
19
20
21
5
6
7
8
9
Configured as an SMBus slave for external download of user-defined
descriptors.
Internal Default Configuration
2-Wire I2C EEPROMS are supported.
VDD Core
This pin must have a 1.0
VSS.
VDD 3.3 PLL Regulator Reference
+3.3V power supply for the PLL. If the internal PLL 1.8V regulator
is enabled, then this pin acts as the regulator input.
VDD PLL
This pin must have a 1.0
VSS.
VDD Analog I/O
+3.3V Filtered analog PHY power, shared between adjacent ports.
VDDIO/VDD 3.3 Core Regulator Reference
+3.3V power supply for the Digital I/O
If the internal core regulator is enabled, then VDD33CR acts as the
regulator input.
No Connect
Leave unconnected on the circuit board.
SMBus slave address 58 (0101100x)
Strap Options Disabled
All Settings Controlled by Registers
Strap Options Enabled
Bus Power Operation
Strap Options Disabled
All Settings Controlled by Registers
DATASHEET
SMBUS OR EEPROM INTERFACE BEHAVIOR
11
μ
μ
F (or greater) ±20% (ESR <0.1
F (or greater) ±20% (ESR <0.1
FUNCTION
USB 2.0 High-Speed 2-Port Hub Controller
Ω
Ω
SMSC USB2512
) capacitor to
) capacitor to
Datasheet