gwixp465bad ETC-unknow, gwixp465bad Datasheet - Page 27

• Manufacturer Part Number: gwixp465bad
• Description: Network Proc 1.3v/1.4v/2.5v/3.3v 400mhz 544-pin Bga
• Manufacturer: ETC-unknow

Datasheet—Intel
3.1.12
Table 5.
August 2006
Document Number:
†
GPIO Pin Number
The interfaces can be configured to support speeds from 1,200 Baud to 921 Kbaud. The
interfaces support configurations of:
The request-to-send (RTS_N) and clear-to-send (CTS_N) modem control signals also
are available with the interface for hardware flow control.
GPIO
16 GPIO pins are supported by the IXP45X/IXP46X network processors. GPIO pins 0
through 15 can be configured to be general-purpose input or general-purpose output.
Additionally, GPIO pins 0 through 12 can be configured to be an interrupt input.
GPIO Pin 1 can also be configured as a clock input for an external USB 2.0 Host Bypass
clock. When spread spectrum clocking (SSC) is used, an external clock should be used
as the source for the USB 2.0 Host clock. Refer to the Intel
Product Line of Network Processors Developer’s Manual for more information.
GPIO Pin 14 and GPIO 15 can also be configured as a clock output. The output-clock
configuration can be set at various speeds, up to 33.33 MHz, with various duty cycles.
GPIO Pin 14 is configured as an input, upon reset. GPIO Pin 15 is configured as an
output, upon reset. GPIO Pin 15 can be used to clock the expansion interface, after
reset.
Several other GPIO pins can serve as an alternate function, as outlined in
GPIO Alternate Function Table
®
• Five, six, seven, or eight data-bit transfers
• One or two stop bits
• Even, odd, or no parity
306261-004US
IXP45X and Intel
When a spread spectrum clock is used, GPIO Pin 0 and GPIO Pin 1 should be configured as an input clock
for USB. See the Intel
Manual for detailed information.
9:12
13
14
15
0
1
2
3
4
5
6
7
8
†
†
®
General purpose input/output or interrupt source
General purpose input/output or interrupt source
General purpose input/output or interrupt source
General purpose input/output or interrupt source
General purpose input/output or interrupt source
General purpose input/output or interrupt source
General purpose input/output or interrupt source
General purpose input/output or interrupt source
General purpose input/output or interrupt source
General purpose input/output or interrupt source
General purpose input/output
General purpose input/output or output clock
Output Clock or General purpose input/output
IXP46X Product Line of Network Processors
®
IXP45X and Intel
GPIO function
Intel
®
®
IXP45X and Intel
IXP46X Product Line of Network Processors Developer’s
®
IXP46X Product Line of Network Processors
®
External USB v1.1 Device Bypass
Clock
External USB v2.0 Host Bypass
Clock
Reserved
Reserved
Reserved
Reserved
Reserved
Auxiliary IEEE1588 Master
Snapshot
Auxiliary IEEE1588 Slave Snapshot
Reserved
Reserved
Output clock 14
Output clock 15
IXP45X and Intel
Alternate Function
Table
®
IXP46X
Datasheet
5.
27