
Strapping Options
© 2009 Advanced Micro Devices, Inc.
45732 AMD 780E Databook 3.10
Proprietary
3-15
Table 3-17 Strap Definitions for the RS780E
Strap Function
Strap Pin
Description
STRAP_DEBUG_BUS_GPIO
_ENABLE#
DAC_VSYNC
Enables debug bus access through memory I/O pads and GPIOs.
0: Enable
1: Disable
(See debug bus specification documents for more details.)
SIDE_PORT_EN#
DAC_HSYNC
Indicates if memory side-port is available or not.
0: Available
1: Not available.
LOAD_EEPROM_STRAPS# SUS_STAT#
Selects loading of strap values from EEPROM.
0: I
2
C™ master can load strap values from EEPROM if connected, or use default
values if EEPROM is not connected. Please refer to RS780E's reference schematics
for system level implementation details.
1: Use default values
Note
: On the RS780E, the widths of the A-Link Express II interface and the general purpose PCI-E links are configured through the
programmable strap GPPSB_LINK_CONFIG, which is programmed through RS780E’s registers. See the
RS780 ASIC Family Register
Reference Guide
, order# 43451, and the
RS780 ASIC Family Register Programming Requirements,
order# 43291, for details.
SR5580
Register Reference Guide
[forthcoming]
and the
SR5580 Register Programming Requirements
[forthcoming] for details.