USB2524
USB MultiSwitch
TM
Hub
PRODUCT FEATURES
USB 2.0 Compatible 4-Port Hub with two upstream
host port connections
— Provides electronic reconfiguration and re-assignment
of any of its 4 downstream ports to either of two
upstream host ports (“on-the-fly”).
— Allows multiple USB hosts to share peripherals and
enables a user to dynamically assign host ownership.
Datasheet
Enhanced configuration options available through
either a Single Serial I
2
C EEPROM, or SMBus Slave
Port
— VID/PID/DID
— Port Configuration
— String Descriptors (each can support a maximum length
of 31 characters)
– Embedded Mode - 8 (predefined, OEM
programmable) configurations for port
assignment are selectable via three external
control signals.
– Peripheral Mode - Dedicated select pin for
every downstream port (total of 4), selectable
edge or level triggered in order to support a
wide range of possible switch configurations
and styles.
— Each host has a dedicated Single Transaction
Translator (Single-TT) for supporting FS/LS devices, or
can also operate in Multi-TT mode where each
downstream port has a dedicated Transaction
Translator.
– Custom Manufacturer String
– Custom Product String
– Custom Serial String
— Assignment of downstream ports to upstream hosts
— Switching mechanism selection
Hardware Strapping options allow for configuration
without an external EEPROM or SMBus Host
— Default VID/PID/DID, allows functionality when
configuration EEPROM is absent
Complete USB Specification 2.0 Compatibility
— Includes USB 2.0 Hi-Speed Transceivers
— High-Speed (480Mbits/s), Full-Speed (12Mbits/s) and
Low-Speed (1.5Mbits/s) compatible
— Full power management with choice of Individual or
Ganged power control
Downstream ports can be disabled or defined as non-
removable
Switching hub can be configured as compound
device for support of ‘embedded’ USB peripherals
Multiple LED modes for maximum implementation
flexibility
— USB Mode - 2 Single-color LEDs for each downstream
port (total of 8 LEDs).
— Host Ownership Mode - 8 Single-Color LEDs indicate
which upstream host each of the downstream ports are
assigned to.
— Host Ownership & Port Speed Mode - 8 Dual-Color
LEDs are used to indicate which upstream host each of
the downstream ports are assigned to, while
simultaneously indicating downstream port connection
speed.
On-Board 24MHz Crystal Driver Circuit or 24 MHz
external clock driver
Internal PLL for 480MHz USB 2.0 Sampling
Internal 1.8V Linear Voltage Regulator
Integrated USB termination and Pull-up/Pull-down
resistors
Internal Short Circuit protection of USB differential
signal pins
1.8 Volt Low Power Core Operation
3.3 Volt I/O with 5V Input Tolerance
56-Pin QFN Lead-free RoHS Compliant Package
SMSC USB2524
DATASHEET
Revision 1.91 (08-22-07)
USB MultiSwitch
TM
Hub
Datasheet
ORDER NUMBER(S):
USB2524-ABZJ for 56-pin QFN Lead-Free RoHS Compliant Package
80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123
Copyright © 2007 SMSC or its subsidiaries. All rights reserved.
Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for
construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC
reserves the right to make changes to specifications and product descriptions at any time without notice. Contact your local SMSC sales office to obtain the latest specifications
before placing your product order. The provision of this information does not convey to the purchaser of the described semiconductor devices any licenses under any patent
rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated
version of SMSC's standard Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement"). The product may contain design defects or errors
known as anomalies which may cause the product's functions to deviate from published specifications. Anomaly sheets are available upon request. SMSC products are not
designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property
damage. Any and all such uses without prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of
this document or other SMSC literature, as well as the Terms of Sale Agreement, may be obtained by visiting SMSC’s website at http://www.smsc.com. SMSC is a registered
trademark of Standard Microsystems Corporation (“SMSC”). Product names and company names are the trademarks of their respective holders.
SMSC DISCLAIMS AND EXCLUDES ANY AND ALL WARRANTIES, INCLUDING WITHOUT LIMITATION ANY AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND AGAINST INFRINGEMENT AND THE LIKE, AND ANY AND ALL WARRANTIES ARISING FROM ANY COURSE
OF DEALING OR USAGE OF TRADE. IN NO EVENT SHALL SMSC BE LIABLE FOR ANY DIRECT, INCIDENTAL, INDIRECT, SPECIAL, PUNITIVE, OR CONSEQUENTIAL
DAMAGES; OR FOR LOST DATA, PROFITS, SAVINGS OR REVENUES OF ANY KIND; REGARDLESS OF THE FORM OF ACTION, WHETHER BASED ON CONTRACT;
TORT; NEGLIGENCE OF SMSC OR OTHERS; STRICT LIABILITY; BREACH OF WARRANTY; OR OTHERWISE; WHETHER OR NOT ANY REMEDY OF BUYER IS HELD
TO HAVE FAILED OF ITS ESSENTIAL PURPOSE, AND WHETHER OR NOT SMSC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Revision 1.91 (08-22-07)
2
SMSC USB2524
DATASHEET
USB MultiSwitch
TM
Hub
Datasheet
Table of Contents
Chapter 1 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.1
OEM Selectable Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Chapter 2 Pin Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Chapter 3 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Chapter 4 Switching Hub Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Chapter 5 Switching Hub Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Chapter 6 Assigning Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.1
Port Assign Interface (PRT_ASSIGN[3:0] pins) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1.1
Embedded Mode: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1.2
Peripheral Mode: Level Triggered . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1.3
Peripheral Mode: Edge Triggered . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SMBus Host Control of Port Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18
18
19
19
19
6.2
Chapter 7 Configuration Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.1
Switching Hub Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.1
Power Switching Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.2
VBus Detect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.3
Port Assignment Configuration: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4
Internal Register Set (Common to EEPROM and SMBus) . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.1 Register 00h: Vendor ID (LSB) (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.2 Register 01h: Vendor ID (MSB) (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.3 Register 02h: Product ID (LSB) (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.4 Register 03h: Product ID (MSB) (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.5 Register 04h: Device ID (LSB) (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.6 Register 05h: Device ID (MSB) (Reset = 0x00). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.7 Register 06h: CONFIG_BYTE_1 (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.8 Register 07h: Configuration Data Byte 2 (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.9 Register 08h: Configuration Data Byte 3 (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.10 Register 09h: Non-Removable Device (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.11 Register 0Ah: Port Disable For Self Powered Operation (Reset = 0x00) . . . . . . . . . . . .
7.1.4.12 Register 0Bh: Port Disable For Bus Powered Operation (Reset = 0x00) . . . . . . . . . . . .
7.1.4.13 Register 0Ch: Max Power For Self Powered Operation (Reset = 0x00) . . . . . . . . . . . . .
7.1.4.14 Register 0Dh: Max Power For Bus Powered Operation (Reset = 0x00) . . . . . . . . . . . . .
7.1.4.15 Register 0Eh: Hub Controller Max Current For Self Powered Operation (Reset = 0x00)
7.1.4.16 Register 0Fh: Hub Controller Max Current For Bus Powered Operation (Reset = 0x00)
7.1.4.17 Register 10h: Power-On Time (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.18 Register 11h: Language ID High (Reset = 0x00). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.19 Register 12h: Language ID Low (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.20 Register 13h: Manufacturer String Length (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.21 Register 14h: Product String Length (Reset = 0x00). . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.22 Register 15h: Serial String Length (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.23 Register 16h-53h: Manufacturer String (Reset = 0x00). . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.24 Register 54h-91h: Product String (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.25 Register 92h-CFh: Serial String (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.26 Register D0h: Port Interface Delay Timer (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.27 Register D1h: Port Assign Interface Configuration 0A (Reset = 0x00) . . . . . . . . . . . . . .
3
20
20
20
20
20
22
22
22
22
22
22
23
24
24
25
26
26
26
27
27
27
27
27
27
28
28
28
28
28
29
29
29
SMSC USB2524
Revision 1.91 (08-22-07)
DATASHEET
USB MultiSwitch
TM
Hub
Datasheet
7.2
7.3
7.1.4.28 Register D2h: Port Assign Interface Configuration 0B (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.29 Register D3h: Port Assign Interface Configuration 0C (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.30 Register D4h: Port Assign Interface Configuration 0D (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.31 Register D5h: Port Assign Interface Configuration 1A (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.32 Register D6h: Port Assign Interface Configuration 1B (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.33 Register D7h: Port Assign Interface Configuration 1C (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.34 Register D8h: Port Assign Interface Configuration 1D (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.35 Register D9h: Port Assign Interface Configuration 2A (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.36 Register DAh: Port Assign Interface Configuration 2B (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.37 Register DBh: Port Assign Interface Configuration 2C (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.38 Register DCh: Port Assign Interface Configuration 2D (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.39 Register DDh: Port Assign Interface Configuration 3A (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.40 Register DEh: Port Assign Interface Configuration 3B (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.41 Register DFh: Port Assign Interface Configuration 3C (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.42 Register E0h: Port Assign Interface Configuration 3D (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.43 Register E1h: Port Assign Interface Configuration 4A (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.44 Register E2h: Port Assign Interface Configuration 4B (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.45 Register E3h: Port Assign Interface Configuration 4C (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.46 Register E4h: Port Assign Interface Configuration 4D (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.47 Register E5h: Port Assign Interface Configuration 5A (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.48 Register E6h: Port Assign Interface Configuration 5B (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.49 Register E7h: Port Assign Interface Configuration 5C (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.50 Register E8h: Port Assign Interface Configuration 5D (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.51 Register E9h: Port Assign Interface Configuration 6A (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.52 Register EAh: Port Assign Interface Configuration 6B (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.53 Register EBh: Port Assign Interface Configuration 6C (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.54 Register ECh: Port Assign Interface Configuration 6D (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.55 Register EDh: Port Assign Interface Configuration 7A (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.56 Register EEh: Port Assign Interface Configuration 7B (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.57 Register EFh: Port Assign Interface Configuration 7C (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.58 Register F0h: Port Assign Interface Configuration 7D (Reset = 0x00) . . . . . . . . . . . . . .
7.1.4.59 Register F1h: Port Assignment 1 & 2 (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.60 Register F2h: Port Assignment 3 & 4 (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.61 Register F3h: Port Assignment 5 & 6 (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.62 Register F4h: Port Assignment 7 (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.63 Register F5h: Port Lockout (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.4.64 Register FFh: Status/Command (Reset = 0x00) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EEPROM Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.1
I2C Master . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.1.1 Implementation Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.1.2 Pull-Up Resistor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.1.3 I2C EEPROM Slave Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.2
In-Circuit EEPROM Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SMBus Slave Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.1
Bus Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.1.1 Block Read/Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.2
Invalid Protocol Response Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.3
General Call Address Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.4
Slave Device Time-Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.5
Stretching the SCLK Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.6
SMBus Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.7
Bus Reset Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.8
SMBus Alert Response Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.8.1 Undefined Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.8.2 Reserved Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
30
30
30
30
31
31
31
31
32
32
32
32
33
33
33
33
34
34
34
34
35
35
35
35
36
36
36
36
37
37
37
37
38
38
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40
40
40
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41
42
42
42
42
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43
43
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43
Revision 1.91 (08-22-07)
SMSC USB2524
DATASHEET
USB MultiSwitch
TM
Hub
Datasheet
7.4
7.5
Default Strapping Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Default Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Chapter 8 LED Interface Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
8.1
8.2
8.3
USB Mode: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Basic Host Owner LED Indication: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Host Ownership and Port Speed LED Indication:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Chapter 9 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
9.1
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.1.1
External Hardware RESET_N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.1.1.1 RESET_N for Strapping Option Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.1.1.2 RESET_N for EEPROM Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.1.1.3 RESET_N for SMBus Slave Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.1.2
USB Bus Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
47
47
48
49
50
50
Chapter 10 XNOR Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Chapter 11 DC Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
11.1
Maximum Guaranteed Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
11.1.1 DC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Chapter 12 AC Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
12.1
Oscillator/Clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12.1.1 SMBus Interface: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12.1.2 I2C EEPROM: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12.1.3 USB 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
56
56
56
56
Chapter 13 Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
SMSC USB2524
5
Revision 1.91 (08-22-07)
DATASHEET
京公网安备 11010802033920号
EEWORLD
