XR17V352IB-0A-EVB Datasheet, PDF (16/64 Pages) Exar Corporation – HIGH PERFORMANCE DUAL PCI EXPRESS UART

XR17V352
HIGH PERFORMANCE DUAL PCI EXPRESS UART
TABLE 5: DEVICE CONFIGURATION REGISTERS SHOWN IN BYTE ALIGNMENT
REV. 1.0.4
ADDRESS [A7:A0]
REGISTER
READ/WRITE COMMENT
RESET STATE
Individual UART channels can only control the
bit pertaining to that channel in the registers at
address offset 0x088-0x08B.
Ox088
8XMODE
Read/Write
Bits [7:0] = 0x00
Ox089
4XMODE
Read/Write
Bits [7:0] = 0x00
Ox08A
RESET
Write-only Self clear bits after executing Reset
Bits [7:0] = 0x00
Ox08B
SLEEP
Read/Write Sleep mode
Bits [7:0]= 0x00
Ox08C
Ox08D
Ox08E
Ox08F
DREV
Read-only Device revision
DVID
REGB
MPIOINT[7:0]
Read-only Device identification
Read/Write EEPROM control
Read/Write MPIO[7:0] interrupt mask
Bits [7:0] = Current
Rev.
Bits [7:0] = 0x82
Bits [7:0] = 0x00
Bits [7:0] = 0x00
Ox090
Ox091
Ox092
Ox093
MPIOLVL[7:0]
MPIO3T[7:0]
MPIOINV[7:0]
MPIOSEL[7:0]
Read/Write MPIO[7:0] level control
Read/Write MPIO[7:0] output control
Read/Write MPIO[7:0] input polarity select
Read/Write MPIO[7:0] select
Bits [7:0] = 0x00
Bits [7:0] = 0x00
Bits [7:0] = 0x00
Bits [7:0] = 0xFF
0x094
Ox095
Ox096
Ox097
Ox098
Ox099
0x09A
0x09B
MPIOOD[7:0]
MPIOINT[15:8]
MPIOLVL[15:8]
MPIO3T[15:8]
MPIOINV[15:8]
MPIOSEL[15:8]
MPIOOD[15:8]
Reserved
Read/Write MPIO[7:0] open-drain output control
Read/Write MPIO[15:8] interrupt mask
Read/Write MPIO[15:8] level control
Read/Write MPIO[15:8] output control
Read/Write MPIO[15:8] input polarity select
Read/Write MPIO[15:8] select
Read/Write MPIO[15:8] open-drain output con-
trol
Bits [7:0] = 0x00
Bits [15:8] = 0x00
Bits [15:8] = 0x00
Bits [15:8] = 0x00
Bits [15:8] = 0x00
Bits [15:8] = 0xFF
Bits [15:8] = 0x00
0x00
TABLE 6: DEVICE CONFIGURATION REGISTERS SHOWN IN DWORD ALIGNMENT
ADDRESS
0x0080-0x0083
REGISTER
INTERRUPT (read-only)
BYTE 3 [31:24]
INT3
BYTE 2 [23:16]
INT2
BYTE 1 [15:8]
INT1
0x0084-0x0087
TIMER (read/write)
TIMERMSB
TIMERLSB
Reserved
0x0088-0x008B ANCILLARY1 (read/write)
SLEEP
RESET
4XMODE
BYTE 0 [7:0]
INT0
TIMERCNTL
8XMODE
16