XR17L154 Datasheet, PDF (10/56 Pages) Exar Corporation – 3.3V PCI BUS QUAD UART

áç
DISCONTINUED
XR17L154
3.3V PCI BUS QUAD UART
REV. 1.1.0
TABLE 2: XR17L154 DEVICE CONFIGURATION REGISTERS
OFFSET ADDRESS
MEMORY SPACE
READ/WRITE DATA WIDTH
COMMENT
0x000 - 0x00F UART channel 0 Regs
( Table 10 &
Table 11)
8/16/24/32 First 8 regs are 16550 compatible
0x010 - 0x07F Reserved
0x080 - 0x093 DEVICE CONFIG. REGISTERS
( Table 3)
8/16/24/32
0x094 - 0x0FF Reserved
Read/Write
0x100
UART 0 – Read FIFO
Read-Only 8/16/24/32 64 bytes of RX FIFO data
0x100
UART 0 – Write FIFO
Write-Only 8/16/24/32 64 bytes of TX FIFO data
0x140 - 0x17F Reserved
0x180 - 0x1FF UART 0 – Read FIFO with errors
Read-Only
16/32 64 bytes of RX FIFO data + LSR
0x200 - 0x20F UART channel 1 Regs
0x210 - 0x2FF Reserved
0x300
UART 1 – Read FIFO
0x300
UART 1 – Write FIFO
0x340 - 0x37F Reserved
0x380 - 0x3FF UART 1 – Read FIFO with errors
( Table 10 &
Table 11)
Read/Write
Read-Only
Write-Only
8/16//24/32 First 8 regs are 16550 compatible
8/16/24/32 64 bytes of RX FIFO data
8/16/24/32 64 bytes of TX FIFO data
Read-Only
16/32 64 bytes of RX FIFO data + LSR
0x400 - 0x40F UART channel 2 Regs
0x410 - 0x4FF Reserved
0x500
UART 2 – Read FIFO
0x500
UART 2 – Write FIFO
0x540 - 0x57F Reserved
0x580 - 0x5FF UART 2 – Read FIFO with errors
( Table 10 &
Table 11)
Read/Write
Read-Only
Write-Only
8/16/24/32 First 8 regs are 16550 compatible
8/16/24/32 64 bytes of RX FIFO data
8/16/24/32 64 bytes of TX FIFO data
Read-Only
16/32 64 bytes of RX FIFO data + LSR
0x600 - 0x60F UART channel 3 Regs
0x610 - 0x6FF Reserved
0x700
UART 3 – Read FIFO
0x700
UART 3 – Write FIFO
0x740 - 0x77F Reserved
0x780 - 0x7FF UART 3 – Read FIFO with errors
( Table 10 &
Table 11)
Read/Write
Read-Only
Write-Only
8/16/24/32 First 8 regs are 16550 compatible
8/16/24/32 64 bytes of RX FIFO data
8/16/24/32 64 bytes of TX FIFO data
Read-Only
16/32 64 bytes of RX FIFO data + LSR
10