PI7C9X7952AFDE Pericom Semiconductor, PI7C9X7952AFDE Datasheet - Page 42

• Manufacturer Part Number: PI7C9X7952AFDE
• Description: IC PCIE-TO-UART BRIDGE 128LQFP
• Manufacturer: Pericom Semiconductor

Specifications of PI7C9X7952AFDE

• Applications: PCIe-to-Uart Bridge
• Interface: Advanced Configuration Power Interface (ACPI)
• Voltage - Supply: 1.8V, 3.3V
• Package / Case: 128-LQFP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7. UART REGISTER DESCRIPTION
7.1. REGISTERS IN I/O MODE
Each UART channel has a dedicated 8-byte register block in I/O mode. The register block can be accessed
by the UART I/O Base Address, which is obtained by adding the UART Register Offset to the content of
the Base Address Register 0 (BAR0). The following diagram shows the arrangement of individual UART
register blocks.
September 2009 – Revision 1.3
Pericom Semiconductor
Table 7-1 UART Base Address in I/O Mode
UART
UART0
UART1
UART Register Offset
Figure 7-1 UART Register Block Arrangement in I/O Mode
UART I/O Base Address
BAR0 + 000h
BAR0 + 008h
(BAR0 + UART Register Offset)
09-0087
UART I/O Base Address
000h
008h
Page 42 of 68
UART0 Registers
UART1 Registers
PCI Express® Dual UART
PI7C9X7952
Datasheet