STPCI2HDYI STMicroelectronics, STPCI2HDYI Datasheet - Page 39

• Manufacturer Part Number: STPCI2HDYI
• Manufacturer: STMicroelectronics

Specifications of STPCI2HDYI

• Operating Temperature (min): -40C
• Operating Temperature (max): 115C
• Processing Unit: Microprocessor
• Operating Supply Voltage (min): 2.45/3V
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 2.7/3.6V
• Package Type: BGA
• Screening Level: Industrial
• Pin Count: 516
• Mounting: Surface Mount
• Rad Hardened: No
• Lead Free Status / RoHS Status: Supplier Unconfirmed

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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