Document Outline
- Index
- 1. Features
- 2. Functional Overview
- 3. Applications
- 4. Functional Description
- 5. Pin Definitions and Descriptions
- 6. Electrical Characteristics
- 7. Package Diagram
- 8. Application Circuit
GL620USB
GeneLink-Lite
USB PC-to-PC File Transfer
Controller
SPECIFICATION 1.6
Nov. 16, 2000
Genesys Logic, Inc.
10F, No.11, Ln.3, Tsao Ti Wei, Shenkeng, Taipei, Taiwan
Tel: +886-2-2664-6655
Fax: +886-2-2664-5757
http://www.genesyslogic.com
Your Imagination, Our Creation
Revision 1.6
Nov. 16, 2000
-2-
GL620USB
Index
1. Features ............................................................................................................................ 3
2. Functional Overview ........................................................................................................ 4
3. Applications...................................................................................................................... 5
4. Functional Description ..................................................................................................... 6
5. Pin Definitions and Descriptions...................................................................................... 8
6. Electrical Characteristics.................................................................................................. 9
6.1 Absolute Maximum Ratings (Voltages referenced to GND)........................................................................ 9
6.2 DC Characteristics (VCP/D+/D-).............................................................................................................. 9
6.3 DC Characteristics (PIN1, 2)..................................................................................................................... 9
6.4 DC Characteristics (PIN10, 11) ............................................................................................................... 10
6.5 DC Characteristics (PIN14, 15)............................................................................................................... 10
6.6 Switching Characteristics......................................................................................................................... 10
7. Package Diagram.............................................................................................................11
8. Application Circuit ......................................................................................................... 12
Revision 1.6
Nov. 16, 2000
-3-
GL620USB
1. Features
Conforms to USB 12Mbps Specification, Version 1.1
Patented architecture
Single chip solution for host-to-host communication
File transfer application software running on Windows 98 and Windows 2000
Up to 8.6Mbps transfer rate
Suitable for mobile and SOHO environment
Tiniest solution in the market 16-pin SOP
On-chip 3.3V output
12MHz external clock
Internal power-on reset
Power management support
Revision 1.6
Nov. 16, 2000
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GL620USB
2. Functional Overview
The GL620USB provides a single-chip solution for connecting two or more PCs via their USB ports. According
to USB protocol, the PC is the host and the device is a slave, where the host initiates all the USB traffic and the
slave responds to the host's requests. In other words, a host cannot talk to another host via USB protocol; instead,
a host can only talk to one or more devices. The GL620USB's patent-pending architecture overcomes the USB
inherently incompatibility of connecting two or more PCs by providing two independent USB transceivers and
SIEs for each host, i.e., data can be transferred in both directions simultaneously.
System Diagram
GL620USB
PC A
PC B
USB Connection
USB Connection
Revision 1.6
Nov. 16, 2000
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GL620USB
3. Applications
We provide application program to share file between 2 PCs. This application is easy to install for end users.
Besides, the file transfer rate of the application program (combined with GL620USB) is up to 8.6Mbps. With this
file transfer application, PCs can share files on all local drives, such as hard drive, floppy, CD-ROM and network
drives.
The GL620USB-Lite file transfer function can be integrated with the following form factors:
USB standalone cable
USB standalone hub
USB monitor with hub
PC host
Revision 1.6
Nov. 16, 2000
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GL620USB
4. Functional Description
Block diagram of GL620USB-Lite
The GL620USB-Lite is equipped with two full-speed USB ports, and each port has four endpoints to provide
different functions as follows:
-
Endpoint 0: control transfer
-
Endpoint 1: bulk-read transfer
-
Endpoint 2: bulk-write transfer
-
Endpoint 3: interrupt transfer
Two 8-bytes FIFO and four 64-bytes FIFO are built in the device as follows:
-
Left 8-byte FIFO: provide a pipe to link left endpoint 0 and right endpoint 3. For example, if left host wants
to communicate with right host, left host can issue a no data control transfer and the setup command will be stored
64 Byte FIFO
64 Byte FIFO
8 Byte FIFO
8 Bytes FIFO
USB
Interface
USB
Interface
Micro-
controller
USB Registers
&
FIFO Control
D+
D-
D+
D-
Revision 1.6
Nov. 16, 2000
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GL620USB
in the left 8-byte FIFO. Right host can request an interrupt transfer to get the setup command from left host. The
status stage of the left side control transfer will not be terminated until that the right side get the setup command
via interrupt transfer.
-
Right 8-byte FIFO: provide a pipe to link right endpoint 0 and left endpoint 3.
-
Left 64-bytes DATA0/DATA1 FIFOs: provide a pipe to link left endpoint 2 and right endpoint 1. For
example, if left host wants to transfer data to right host, left host can issue bulk write transfer and the payload will
be stored in the left 64-byte FIFOs. Right host can request a bulk read transfer to get the data from left host.
-
Right 64-bytes DATA0/DATA1 FIFOs: provide a pipe to link right endpoint 2 and left endpoint 1.
Revision 1.6
Nov. 16, 2000
-8-
GL620USB
5. Pin Definitions and Descriptions
PIN
SYMBOL
I/O
DESCRIPTION
1
GPIO1
B
General purpose IO pin / Driving LED capability
2
GPIO2
B
General purpose IO pin / Driving LED capability
3
LVM
B
Left D-
4
LVP
B
Left D+
5
VCP
O
3.3V output
6
RVP
B
Right D+
7
RVM
B
Right D-
8
AGND
-
Ground
9
DGND
-
Ground
10
OSCSEL
I
Selection of clock type
11
EXTRST_
I
External reset
12
XTAL1
I
12M crystal input
13
XTAL2
O
Crystal output
14
GPIO3
B
General purpose IO pin
15
GPIO4
B
General purpose IO pin
16
VCC
-
5V power
1
2
3
4
14
7
6
5
VCC
OSCSEL
XTAL2
AGND
RVM
GPIO1
EXTRST_
LVM
13
10
12
11
9
8
DGND
GPIO2
GPIO3
GPIO4
LVP
XTAL1
RVP
VCP
16
15
16-pin SOP
Revision 1.6
Nov. 16, 2000
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GL620USB
6. Electrical Characteristics
6.1 Absolute Maximum Ratings (Voltages referenced to GND)
SYMBOL
Description
MIN
MAX
VCC
DC supply voltage
-0.5V
+7V
V
I
DC input voltage
-0.5V
VCC+0.5V
V
I/O
DC input voltage range for bidirect pins
-0.5V
VCC+0.5V
V
AI/O
DC input voltage for USB D+/D- pins(PIN3, 4, 6, 7)
-0.5V
VCC+0.5V
V
I/OZ
DC voltage applied to outputs in High Z state
-0.5V
VCC+0.5V
V
ESD
static discharge voltage
4000V
6.2 DC Characteristics (VCP/D+/D-)
SYMBOL
Description
MIN
TYP
MAX
UNIT
V
3.3
VCP regulator output
3.0
3.3
3.6
V
I
3.3
VCP maximum supply current
27
41
56
mA
V
OL
D+/D- static output LOW(R
L
of 1.5K to 3.6V )
0.3
V
V
OH
D+/D- static output HIGH (R
L
of 15K to GND )
2.8
3.6
V
V
DI
Differential input sensitivity
0.2
V
V
CM
Differential common mode range
0.8
2.5
V
V
SE
Single-ended receiver threshold
0.2
V
C
IN
Transceiver capacitance
20
pF
I
LO
Hi-Z state data line leakage
-10
+10
A
Z
DRV
Driver output resistance
28
43
Ohms
6.3 DC Characteristics (PIN1, 2)
SYMBOL
Description
MIN
TYP
MAX
UNIT
V
DD
Power Supply Voltage
4.5
5.0
5.5
V
I
OL
DC output sink current at 0.4V
13.01
19.54
24.82
mA
I
OH
DC output source current at V
DD
-0.4V
6.35
9.82
12.37
mA
I
OHTTL
DC output source current at TTL high
24.62
49.45
69.12
mA
V
IL
LOW level input voltage
0.7
V
V
IH
HIGH level input voltage
2.66
V
V
TLH
LOW to HIGH threshold voltage
2.02
2.38
2.66
V
V
THL
HIGH to LOW threshold voltage
0.7
0.83
1.0
V
V
HYS
Hysteresis voltage
1.1
1.55
1.79
V
V
OL
LOW level output voltage when I
OL
=16mA
0.4
V
Revision 1.6
Nov. 16, 2000
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GL620USB
6.4 DC Characteristics (PIN10, 11)
SYMBOL
Description
MIN
TYP
MAX
UNIT
V
DD
Power Supply Voltage
4.5
5.0
5.5
V
V
IL
LOW level input voltage
0.69
V
V
IH
HIGH level input voltage
2.65
V
V
TLH
LOW to HIGH threshold voltage
2.01
2.37
2.65
V
V
THL
HIGH to LOW threshold voltage
0.69
0.82
0.99
V
V
HYS
Hysteresis voltage
1.1
1.55
1.79
V
R
UP
Pad internal pullup resister
191.27
240.69
376.34
Kohms
6.5 DC Characteristics (PIN14, 15)
SYMBOL
Description
MIN
TYP
MAX
UNIT
V
DD
Power Supply Voltage
4.5
5.0
5.5
V
I
OL
DC output sink current at 0.4V
3.89
5.94
7.56
mA
I
OH
DC output source current at V
DD
-0.4V
2.85
4.36
5.46
mA
I
OHTTL
DC output source current at TTL high
10.9
21.5
29.75
mA
V
IL
LOW level input voltage
0.71
V
V
IH
HIGH level input voltage
2.68
V
V
TLH
LOW to HIGH threshold voltage
2.03
2.39
2.68
V
V
THL
HIGH to LOW threshold voltage
0.71
0.83
1.0
V
V
HYS
Hysteresis voltage
1.1
1.55
1.8
V
V
OL
LOW level output voltage when I
OL
=4mA
0.4
V
R
DN
Pad internal pulldown resister
122.08
160
267.31
Kohms
6.6 Switching Characteristics
SYMBOL
Description
MIN
TYP
MAX
UNIT
F
X1
X1 crystal frequency
11.97
12
12.03
MHz
T
CYC
X1 cycle time
83.3
ns
T
X1L
X1 clock LOW time
0.45T
cyc
ns
T
X1H
X1 clock HIGH time
0.45T
cyc
ns
T
r30pf
Output pad rise time from 10% to 90% swing with 30pF
loading
6
8
12
ns
T
f30pf
Output pad fall time from 10% to 90% swing with 30pF
loading
5.3
7
10.4
ns
T
r50pf
Output pad rise time from 10% to 90% swing with50pF
loading
9.5
13
19
ns
T
f50pf
Output pad fall time from 10% to 90% swing with 50pF
loading
7.7
10
16
ns
T
rUSB
D+/D- rise time with 50pF loading
4
20
ns
T
fUSB
D+/D- fall time with 50pF loading
4
20
ns
Revision 1.6
Nov. 16, 2000
-11-
GL620USB
7. Package Diagram
Dimension in mils Dimension in mm
Symbol
Min Nom Max Min Nom Max
A
---
58
---
--- 1.473 ---
A1
6
---
--- 0.152 ---
---
A2
---
24
---
--- 0.610 ---
B
---
16
---
--- 0.406 ---
C
---
8
---
--- 0.203 ---
D
388 390 392 9.855 9.906 9.957
E1
152 154 156 3.861 3.912 3.962
e
---
50
---
--- 1.270 ---
eB
---
238
---
--- 6.045 ---
L
25
---
--- 0.635 ---
---
0
3
6
0
3
6
A2
A1
B
e
A
D
C
eB
E1
L
Revision 1.6
Nov. 16, 2000
-12-
GL620USB
8. Application Circuit
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