![](http://datasheet.mmic.net.cn/Exar-Corporation/XR17V358IB176-F_datasheet_100076/XR17V358IB176-F_16.png)
XR17V358
16
HIGH PERFORMANCE OCTAL PCI EXPRESS UART
REV. 1.0.4
TABLE 4: XR17V358 UART AND DEVICE CONFIGURATION REGISTERS
OFFSET ADDRESS
MEMORY SPACE
READ/WRITE
COMMENT
0x0000 - 0x000F
UART channel 0 Regs
First 8 regs are 16550 compatible
0x0010 - 0x007F
Reserved
0x0080 - 0x009A
DEVICE CONFIGURATION REGISTERS
(
0x009B - 0x00FF
Reserved
0x0100 - 0x01FF
UART 0 – Read FIFO
Read-Only
256 bytes of RX FIFO data
0x0100 - 0x01FF
UART 0 – Write FIFO
Write-Only
256 bytes of TX FIFO data
0x0200 - 0x03FF
UART 0 – Read FIFO with errors
Read-Only
256 bytes of RX FIFO data + LSR
0x0400 - 0x040F
UART channel 1 Regs
First 8 regs are 16550 compatible
0x0410 - 0x047F
Reserved
0x0480 - 0x049A
DEVICE CONFIGURATION REGISTERS
(
0x049B - 0x04FF
Reserved
0x0500 - 0x05FF
UART 1 – Read FIFO
Read-Only
256 bytes of RX FIFO data
0x0500 - 0x05FF
UART 1 – Write FIFO
Write-Only
256 bytes of TX FIFO data
0x0600 - 0x07FF
UART 1 – Read FIFO with errors
Read-Only
256 bytes of RX FIFO data + LSR
0x0800 - 0x080F
UART channel 2 Regs
First 8 regs are 16550 compatible
0x0810 - 0x087F
Reserved
0x0880 - 0x089A
DEVICE CONFIGURATION REGISTERS
(
0x089B - 0x08FF
Reserved
0x0900 - 0x09FF
UART 2 – Read FIFO
Read-Only
256 bytes of RX FIFO data
0x0900 - 0x09FF
UART 2 – Write FIFO
Write-Only
256 bytes of TX FIFO data
0x0A00 - 0x0BFF
UART 2 – Read FIFO with errors
Read-Only
256 bytes of RX FIFO data + LSR
0x0C00 - 0x0C0F
UART channel 3 Regs
First 8 regs are 16550 compatible
0x0C10 - 0x0C7F
Reserved
0x0C80 - 0x0C9A
DEVICE CONFIGURATION REGISTERS
(
0x0C9B - 0x0CFF Reserved
0x0D00 - 0x0DFF
UART 3 – Read FIFO
Read-Only
256 bytes of RX FIFO data
0x0D00 - 0x0DFF
UART 3 – Write FIFO
Write-Only
256 bytes of TX FIFO data
0x0E00 - 0x0FFF
UART 3 – Read FIFO with errors
Read-Only
256 bytes of RX FIFO data + LSR