XR28V382IL32-0A Datasheet, PDF (19/39 Pages) Exar Corporation – 3.3V DUAL LPC UART WITH 128-BYTE FIFO

XR28V382
REV. 1.0.1
x Device Configuration Registers
3.3V DUAL LPC UART WITH 128-BYTE FIFO
The Device Configuration Register set is specific to each device of the V382. The V382 has two types of
devices: 1) UART 2) Watchdog Timer. It has 2 UART devices and 1 Watchdog timer. All the UARTs have similar
register set except UARTA. UARTA has an additional register to control IR function.
The Device Configuration register set can be accessed through indirect addressing described in ’Section
1.1.2.3, Example’ . Table 7 lists the Device Configuration registers.
TABLE 7: DEVICE CONFIGURATION REGISTERS
ADDRESS
[A7:A0]
REGISTER
READ/WRITE RESET STATE
COMMENT
0x30
UART Enable Register (ENABLE)
Read/Write
0x60
0x61
Base Address High Register
Base Address Low Register
Read/Write
Read/Write
See Table 1 ’UART Power On
Configuration’
UARTA
(LDN=0x00)
0x70
0xF0
0xF1
IRQ Channel Select Register
Enhanced Multifunction Register
IR Control Register
Read/Write
Read/Write
Read/Write
0x00
0x44
0xF4
9-bit Mode Slave Address Register
Read/Write
0x00
0xF5 9-bit Mode Slave Address Mask Register Read/Write
0x00
0xF6
FIFO Mode Select Register
Read/Write
0x00
0x30
UART Enable Register (ENABLE)
Read/Write
0x60
0x61
Base Address High Register
Base Address Low Register
Read/Write
Read/Write
See Table 1 ’UART Power On
Configuration’
UARTB
(LDN=0x01)
0x70
0xF0
IRQ Channel Select Register
Enhanced Multifunction Register
Read/Write
Read/Write
0x00
0xF4
9-bit Mode Slave Address Register
Read/Write
0x00
0xF5 9-bit Mode Slave Address Mask Register Read/Write
0x00
0xF6
FIFO Mode Select Register
Read/Write
0x00
0x30
Watchdog Enable Register
Read/Write
0x01
WDT
(LDN=0x08)
0x60
0x61
0x70
0xF0
Base Address High Register
Base Address Low Register
IRQ Channel Select Register
Timer Status and Control Register
Read/Write
Read/Write
Read/Write
Read/Write
0x04
0x42
0x00
0x02
See Table 1
’UART Power On
Configuration’
0xF1
Timer Count Number Register
Read/Write
0x0A
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