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TUSB2040 Datasheet

  • TUSB2040

  • 4-PORT HUB FOR THE UNIVERSAL SERIAL BUS WITH OPTIONAL SERIAL...

  • 264.04KB

  • 17頁(yè)

  • TI

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TUSB2040A
4-PORT HUB FOR THE UNIVERSAL SERIAL BUS
WITH OPTIONAL SERIAL EEPROM INTERFACE
SLLS288B 鈥?FEBRUARY 1998 鈥?REVISED MARCH 1998
D
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description
The TUSB2040A hub is a 3.3-V CMOS device
that provides up to four downstream ports in
compliance with the USB specification 1.0
version. Pin 21 (EXTMEM) enables or disables
the EEPROM interface. When EXTMEM is low,
the TUSB2040A is functionally equivalent to the
TUSB2040 hub and the product ID (PID)
displayed during enumeration is General Purpose
USB Hub. For this configuration, pins 9 and 10 are
the BUSPWR and GANGED input pins,
respectively.
If programmable vendor ID(VID) and product
ID(PID) descriptors are desired, pin 21 must be
high (EXTMEM = 1) and a SGS Thompson
M93C46 or equivalent EEPROM must be
connected to pins 9 and 10. For this configuration,
the values for BUSPWR and GANGED are stored
in the EEPROM and pins 9 and 10 become the
EEPROM interface.
DP0
DM0
GND
NC
NC
DP1
DM1
NC
NC
BUSPWR/SCL
GANGED/SDA
NC
1
2
3
4
5
6
7
8
9
10
11
12
48
47
46
45
44
43
42
41
40
39
38
37
OVRCUR1
PWRON1
OVRCUR2
NC
PWRON2
NC
NC
V CC
NC
NC
OVRCUR3
PWRON3
36
35
34
33
32
31
30
29
28
27
26
25
13
14
15
16
17
18
19
20
21
22
23
24
Universal Serial Bus (USB) Version 1.0
Compliant
Integrated USB Transceivers
Four Downstream Ports
Two Power Source Modes
鈥?/div>
Self-Powered Mode
鈥?/div>
Bus-Powered Mode
Power Switching and Overcurrent
Reporting is Provided Ganged or Per Port
All Downstream Ports Support Full-Speed
and Low-Speed Operations
Supports Suspend and Resume Operations
Pin-to-Pin Compatible with the TUSB2040
Device when EXTMEM Pin is Low
Supports Programmable Vendor ID and
Product ID With External Serial EEPROM
Tri-State EEPROM Interface Allows
EEPROM Sharing
Available in 28-Pin DIP and 48-Pin TQFP
Packages
3.3-V Operation
N PACKAGE
(TOP VIEW)
OVRCUR2
PWRON1
OVRCUR1
DP0
DM0
GND
DP1
DM1
BUSPWR/SCL
GANGED/SDA
DP2
DM2
V
CC
DP3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
PWRON2
V
CC
OVRCUR3
PWRON3
GND
XTAL1
XTAL2
EXTMEM
PWRON4
OVRCUR4
RESET
DM4
DP4
DM3
PT PACKAGE
(TOP VIEW)
GND
XTAL1
XTAL2
NC
EXTMEM
NC
NC
PWRON4
NC
OVRCUR4
NC
RESET
鈥?JEDEC descriptor S鈥揚(yáng)QFP鈥揋 for thin quad flatpack (TQFP)
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
DP2
DM2
V CC
NC
NC
DP3
DM3
SUSPND
NC
NC
DP4
DM4
Copyright
漏
1998, Texas Instruments Incorporated
1

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