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PDF PL2305 Data sheet ( Hoja de datos )
| Número de pieza | PL2305 | |
| Descripción | PL-2305 USB to IEEE 1284 Bridge Controller | |
| Fabricantes | Prolific | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de PL2305 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
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PL-2305 USB to IEEE 1284 Bridge Controller
Product Datasheet
Document Revision 1.1
Document Release:August, 2002
www.datasheet4u.com
Prolific Technology Inc.
1 page  
Release Date:
August, 2002
ds_pl2305_v11
Pin Symbol
17 RESETJ
18 NC
19 RWAKEUPJ
20 NC
21 SCL
22 SDA
23 NC
24 VCC
25 XSLIJ
26 XFLTJ
27 XINIJ
28 XSTBJ
29 PD0
30 PD1
31 NC
32 GND
33 PD2
34 PD3
35 NC
36 PD4
37 NC
38 PD5
39 PD6
40 NC
41 VCC
42 PD7
43 XACKJ
44 XBUSY
45 XPERR
46 XSEL
47 XATFJ
48 XPLH
Type: I – Input signal
Type
I
–
I
–
I/O
I/O
–
P
O
I
O
O
I/O
I/O
–
P
I/O
I/O
–
I/O
–
I/O
I/O
–
P
I/O
I
I
I
I
O
I
Description
Optional external Power-On-Reset signal.
No connection.
USB Remote Wake enable, tied to VCC if no remote wake up
control is available.*
No connection.
Clock for external Serial EEPROM.
Data/Address for external Serial EEPROM.
No connection.
5V Power Supply.
nSelectIn signal for Parallel port.
nFault signal for Parallel port.
nInit signal for Parallel port.
nStrobe signal for Parallel port.
Data bit 0 for Parallel port.
Data bit 1 for Parallel port.
No connection.
Ground.
Data bit 2 for Parallel port.
Data bit 3 for Parallel port.
No connection.
Data bit 4 for Parallel port.
No connection.
Data bit 5 for Parallel port.
Data bit 6 for Parallel port.
No connection.
5V Power Supply.
Data bit 7 for Parallel port.
nAck signal for Parallel port.
Busy signal for Parallel port.
PError signal for Parallel port.
Select signal for Parallel port.
nAutoFd signal for Parallel port.
PLH signal for Parallel port.
O – Output signal I/O – Bi-directional signal
P – Power/Ground
PL-2305 Product Datasheet
-5-
Document Revision 1.1
5 Page 
Release Date:
August, 2002
ds_pl2305_v11
5.2.1 GET_DEVICE_ID Request (0)
This printer class-specific request returns a Device ID string that is compatible with IEEE-1284. See
IEEE-1284 Specification for syntax and formatting information.
The returned data of this request is a sequence of byte retrieved from the peripheral directly. The first
two bytes are the length of the sequence. The first byte is the most significant byte. (Length value
0x0000, 0x0001, and 0x0002 are reserved.) The following sequence shows a simple Device ID string:
{0x00, 0x0F, “MFG: Prolific”}. The total length of this string is 15, including the two length bytes. In
case that the peripheral does not support the Device ID request, the PL-2305 would return a
zero-length data packet to the host.
5.2.2 GET_PORT_STATUS Request (1)
This class-specific request returns the current status of the status register of the Centronic parallel
port. The following table defines the data returned. USB Data transfers use ACK and NAK replaces
Centronic Busy and Ack status.
Symbol
–
Paper Empty
Select
Not Error
–
Bit Description
7:6 Reserved, must be zero.
5 0 – Paper not empty;
1 – Paper empty.
4 0 – Not selected;
1 – Selected.
3 0 –Error;
1 –No Error.
2:0 Reserved, must be zero.
Note
5.2.3 SOFT_RESET Request (2)
This class-specific request flushes all buffers and resets the Bulk-Out and Bulk-In pipes to their
default states. This reset does not changes the USB addressing and USB configuration.
5.3 Vendor-Specific Device Requests
The PL-2305 defines a set of vendor-specific requests to provide more versatile control over the
IEEE-1284 parallel port for the system programmer. The standard and class-specific requests should
be suffice to support most printer type peripherals. However, to gain most performance out of the
parallel port for some multi-functional type of devices or to handle some not so compatible parallel
port implementations, the following vendor-specific requests might become handy.
PL-2305 Product Datasheet
- 11 -
Document Revision 1.1
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet PL2305.PDF ] | |
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