STPCE1HEBC STMicroelectronics, STPCE1HEBC Datasheet - Page 28

• Manufacturer Part Number: STPCE1HEBC
• Manufacturer: STMicroelectronics

Specifications of STPCE1HEBC

• Operating Temperature (min): 0C
• Operating Temperature (max): 70C
• 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: Commercial
• Pin Count: 388
• Mounting: Surface Mount
• Rad Hardened: No
• Lead Free Status / RoHS Status: Not Compliant

STRAP OPTION
3.1. POWER ON STRAP REGISTER DESCRIPTIONS
3.1.1. STRAP REGISTER 0 CONFIGURATION
28/87
Strap0
Bit Number Sampled
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
Bit 7
MD7
0
0
1
7
Bits 7-6
Bits 3-2
Bits 1-0
Bit 5
Bit 4
Bit 6
X
MD6
0
1
6
This register defaults to the values sampled on MD[7:0] pins after reset
PCICLK frequency between 16 & 32 MHz
PCICLK frequency between 32 & 64 MHz
Reserved
Description
Mnemonic
MD[7:6]
MD[3:2]
MD5
MD4
Rsv
MD5
5
Table 3-2. PCI Clock Programming
Release 1.3 - January 29, 2002
Access = 0022h/0023h
Description
PCICLK Programming; the PCICLK PLL is setup through
MD[7:6]. The PLL setup will vary depending on the PCICLK
frequency. See
This bit reflects the value sampled on MD[5] pin and controls the MCLK/
HCLK Synchronization. When MCLK and HCLK frequency are the same,
when set to 1 it unifies HCLK and MCLK and so improves system
performance.
This bit reflects the value sampled on MD[4] pin and controls the
PCICLKO division. It works in conjunction with MD[17]; refer to
3.1.3.
See
Reserved.
MD4
4
Section 3.1.4.
bit 1 for more details.
MD3
Table 3-2
3
for details.
MD2
2
1
Regoffset = 04Ah
Rsv
Section
0