CLIENT ST Microelectronics, Inc., CLIENT Datasheet - Page 30

• Manufacturer Part Number: CLIENT
• Description: STPC Client Datasheet / PC Compatible Embeded Microprocessor
• Manufacturer: ST Microelectronics, Inc.

STRAP OPTION
Note 1; Setting of Strap Options MD [15:2] have
no effect on the DRAM Controller but are purely
meant for software issues. i.e. Readable in a reg-
ister.
Note 2; The settings for these Straps is show in
the table below:
For further details refer to Application Note 1297
3.1 Power on strap registers description
3.1.1 Strap register 0 Index 4Ah (Strap0)
Bits 7-0; This register reflect the status of pins
MD[7:0] respectively. They are expected to be
connected on the system board to the SIMM con-
figuration pins as follows:
30/61
Memory
Strap Option
Lines
MD38
MD39
MD40
MD41
MD42
MD43
Data
Note 1; All devices with the exception of the technical
codes; MDBT*S710A
The Devices are identified using the techical code
which is the first line laser marked under the ST logo.
MD [32]
MD[35]
Refer to
MDBT*70xxxx
-
-
-
-
-
-
Pull Up (1)
Pull Up (1)
(Old)
Devices Settings
Designation
1
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
MDBT*710Axx
Pull Down (0)
Pull Down (0)
(New)
Issue 2.2 - October 13, 2000
Location
Note that the SIMM speed and type information
read here is meant only for the software and is not
used by the hardware. The software must pro-
gram the Host and graphics dram controller con-
figuration registers appropriately based on these
bits.
This register defaults to the values sampled on
MD[7:0] pins after reset.
3.1.2 Strap register 1 Index 4Bh (Strap1)
Bits 7-0; This register reflect the status of pins
MD[15:8] respectively. They are expected to be
connected on the system board to the SIMM con-
figuration pins as follows:
-
-
-
-
-
-
Bit Sampled
Bits 6-5
Bits 3-2
Bit 7
Bit 4
Bit 1
Bit 0
Actual
Settings
-
-
-
-
-
-
Set to ’0’
SIMM 0 DRAM type
SIMM 1 DRAM type:
SIMM 0 speed
SIMM 1 speed
-
-
-
-
-
-
Description
Reserved
Reserved
Set to ’1’
-
-
-
-
-
-