STPCI2GDYI STMicroelectronics, STPCI2GDYI Datasheet - Page 39

• Manufacturer Part Number: STPCI2GDYI
• Description: IC SYSTEM-ON-CHIP X86 516-PBGA
• Manufacturer: STMicroelectronics

Specifications of STPCI2GDYI

• Applications: Graphics Controller
• Core Processor: x86
• Controller Series: STPC® Atlas
• Interface: UART
• Number Of I /o: 16
• Voltage - Supply: 2.45 V ~ 2.7 V
• Operating Temperature: -40°C ~ 115°C
• Mounting Type: Surface Mount
• Package / Case: 516-PBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Program Memory Type: -
• Ram Size: -
• Lead Free Status / Rohs Status: Compliant

3.1.2 STRAP REGISTER 1
This register is read only.
Bit Number Sampled
STRAP1
MD[40]
7
Bits 7-6
Bits 5-1
Bit 0
MD[14]
6
This register defaults to the values sampled on the MD pins after reset
MD[40] & MD[14]
Mnemonic
MD[36]
Rsv
RSV
5
Access = 0022h/0023h
Description
CPU Clock Multiplication (486 mode):
MD14 MD40
All other settings are reserved
HCLK maximum speed is 66MHz and in CPU mode X2.
Operation in X1 mode is only guaranteed up to 66MHz.
Reserved
These bits reflect the values sampled on MD[36] and determines the
Local Bus Boot device width:
1
1
0: 8-bit Boot Device
1: 16-bit Boot Device
RSV
4
0
1
X 1
X 2
RSV
3
RSV
2
RSV
1
STPC® ATLAS
Regoffset =04Bh
MD[36]
0
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