XR17V352IB-0A-EVB Datasheet, PDF (15/64 Pages) Exar Corporation – HIGH PERFORMANCE DUAL PCI EXPRESS UART

REV. 1.0.4
XR17V352
HIGH PERFORMANCE DUAL PCI EXPRESS UART
TABLE 4: XR17V352 UART AND DEVICE CONFIGURATION REGISTERS
OFFSET ADDRESS
MEMORY SPACE
0x0000 - 0x000F UART channel 0 Regs
0x0010 - 0x007F
0x0080 - 0x009A
0x009B - 0x00FF
0x0100 - 0x01FF
0x0100 - 0x01FF
0x0200 - 0x03FF
Reserved
DEVICE CONFIGURATION REGISTERS
Reserved
UART 0 – Read FIFO
UART 0 – Write FIFO
UART 0 – Read FIFO with errors
READ/WRITE
COMMENT
(Table 12 & First 8 regs are 16550 compatible
Table 13)
(Table 5)
Read-Only
Write-Only
Read-Only
256 bytes of RX FIFO data
256 bytes of TX FIFO data
256 bytes of RX FIFO data + LSR
0x0400 - 0x040F UART channel 1 Regs
0x0410 - 0x047F
0x0480 - 0x049A
0x049B - 0x04FF
0x0500 - 0x05FF
0x0500 - 0x05FF
0x0600 - 0x07FF
Reserved
DEVICE CONFIGURATION REGISTERS
Reserved
UART 1 – Read FIFO
UART 1 – Write FIFO
UART 1 – Read FIFO with errors
(Table 12 & First 8 regs are 16550 compatible
Table 13)
(Table 5)
Read-Only
Write-Only
Read-Only
256 bytes of RX FIFO data
256 bytes of TX FIFO data
256 bytes of RX FIFO data + LSR
1.4 Device Configuration Registers
The Device Configuration Registers provide easy programming of general operating parameters to the V352
and for monitoring the status of various functions. These registers control or report on both channel UARTs
functions that include interrupt control and status, 16-bit general purpose timer control and status, multipurpose
inputs/outputs control and status, sleep mode control, soft-reset control, and device identification and revision,
and others. Table 5 and Table 6 below show these registers in BYTE and DWORD alignment. Each of these
registers is described in detail in the following paragraphs.
TABLE 5: DEVICE CONFIGURATION REGISTERS SHOWN IN BYTE ALIGNMENT
ADDRESS [A7:A0]
Ox080
Ox081
Ox082
Ox083
REGISTER
INT0 [7:0]
INT1 [15:8]
INT2 [23:16]
INT3 [31:24]
READ/WRITE COMMENT
Read-only Interrupt [7:0]
Read-only
Read-only
Read-only
RESET STATE
Bits [7:0] = 0x00
Bits [7:0] = 0x00
Bits [7:0] = 0x00
Bits [7:0] = 0x00
Ox084
Ox085
Ox086
Ox087
TIMERCNTL
REGA
TIMERLSB
TIMERMSB
Read/Write Timer Control
Reserved
Read/Write Timer LSB
Read/Write Timer MSB
Bits [7:0] = 0x00
Bits [7:0] = 0x00
Bits [7:0]= 0x00
Bits [7:0]= 0x00
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