PI7C9X110 Pericom Semiconductor Corporation, PI7C9X110 Datasheet - Page 93

• Manufacturer Part Number: PI7C9X110
• Description: Pcie-to-pci Reversible Bridge
• Manufacturer: Pericom Semiconductor Corporation

7.5.40 UPSTREAM MEMORY 3 UPPER BASE ADDRESS REGISTER – OFFSET 64h
7.5.41 EXPRESS TRANSMITTER/RECEIVER REGISTER – OFFSET 68h
Pericom Semiconductor
BIT
31:0
BIT
1:0
5:2
11:8
FUNCTION
Base address
FUNCTION
Nominal Driver Current
Control
Driver Current Scale
Multiple Control
Driver De-emphasis Level
Control
RO/RW
TYPE
TYPE
RW
RW
RW
Page 93 of 145
DESCRIPTION
The size of this Base Address Register is defined from Upstream Memory 3
Upper 32-bit Setup Register (CSR Offset 038h), which can be initialized by
EEPROM (I2C) or SM Bus or Local Processor. Writing a zero to bit [31] of
the setup registers (CSR Offset 038h) to disable this register. This register
defines the upper 32 bits of a memory range for upstream forwarding
memory. PI7C9X110 uses this register and the Upstream Memory 3 Base
Address Register when 64-bit addressing programmed (bit [21] of Offset
68h). When 64-bit addressing is disabled, no address translation is
performed. All 64-bit address transactions on the secondary interface falling
outside of the Downstream Memory 3 address range are forwarded upstream.
Reset to 00000000h
DESCRIPTION
00: 20mA
01: 10mA
10: 28mA
11: Reserved
Reset to 00
0000: 1.00 x nominal driver current
0001: 1.05 x nominal driver current
0010: 1.10 x nominal driver current
0011: 1.15 x nominal driver current
0100: 1.20 x nominal driver current
0101: 1.25 x nominal driver current
0110: 1.30 x nominal driver current
0111: 1.35 x nominal driver current
1000: 1.60 x nominal driver current
1001: 1.65 x nominal driver current
1010: 1.70 x nominal driver current
1011: 1.75 x nominal driver current
1100: 1.80 x nominal driver current
1101: 1.85 x nominal driver current
1110: 1.90 x nominal driver current
1111: 1.95 x nominal driver current
Reset to 0000
0000: 0.00 db
0001: -0.35 db
0010: -0.72 db
0011: -1.11 db
0100: -1.51 db
0101: -1.94 db
0110: -2.38 db
0111: -2.85 db
1000: -3.35 db
1001: -3.88 db
1010: -4.44 db
1011: -5.04 db
1100: -5.68 db
1101: -6.38 db
1110: -7.13 db
1111: -7.96 db
Reset to 1000
May 2008, Revision 2.6
PCIe-to-PCI Reversible Bridge
PI7C9X110