STPCC4 STMicroelectronics, STPCC4 Datasheet - Page 30

• Manufacturer Part Number: STPCC4
• Description: STPC CONSUMER-II DATASHEET - X86 CORE PC COMPATIBLE INFORMATION APPLIANCE SYSTEM-ON-CHIP
• Manufacturer: STMicroelectronics

STRAP OPTIONS
3.1.3. ADPC STRAP REGISTER 2 CONFIGURATION
30/93
Strap2
Bit Number Sampled
See Table
below
7
Bit 6-5
Bits 7
Bits 4
Bit 3
Bit 2
Bit 1
Bit 0
6
This register defaults to the values sampled on MD pins after reset
Rsv
Mnemonic
MD[40]
MD[20]
MD[17]
Rsv
Rsv
Rsv
Rsv
Rsv
Rsv
5
Release 1.5 - January 29, 2002
Access = 0022h/0023h
Reserved
Description
For the parts referenced STPCC4, Reserved
For the parts referenced STPCC5, this bit reflects the value sampled on
MD[40] is used is used to set the clock multiplication factor of the 486
core, as follows:
MD[40]
This strap is not readable in a register for theSTPCC4.
Reserved
This bit reflects the value sampled on MD[20] pin and controls
the Dot clock (DCLK) source as follows:
internal frequency synthesizer output. Note this bit is writeable
as well as readable.
Reserved
For the parts referenced STPCC4, see section Section 3.1.1. bits 1:0.
For the parts referenced STPCC5.This bit is reserved and not connected
Reserved
0: External. DCLK pin is an input.
1: Internal. DCLK pin is an output and is connected to the
MD[20]
0
1
4
DX2 (X2)
DX (X1)
MD[19]
3
MD[18]
2
See Table
below
1
Regoffset = 04Ch
Rsv
0