xr16m890 Exar Corporation, xr16m890 Datasheet - Page 50

• Manufacturer Part Number: xr16m890
• Description: Uart With 128-byte Fifo And Integrated Level Shifters
• Manufacturer: Exar Corporation

XR16M890
UART WITH 128-BYTE FIFO AND INTEGRATED LEVEL SHIFTERS
INT (Intel or VLIO mode)
IRQ# (Motorola mode)
(Both TX and RX)
I/O SIGNALS
REGISTERS
DLM, DLL
GPIOSEL
GPIOLVL
GPIOINT
GPIOINV
GPIO3T
XOFF1
XOFF2
EMSR
XON1
XON2
FCTR
DTR#
RTS#
RHR
MCR
MSR
THR
FCR
SHR
SPR
TRG
DLD
LCR
LSR
SFR
EFR
IER
ISR
FC
TX
DLM = 0x00 and DLL = 0x01. Only resets to these values during a power up.
They do not reset when the Reset Pin is asserted.
Bits 7-0 = 0x00
Bits 7-0 = 0xXX
Bits 7-0 = 0xXX
Bits 7-0 = 0x00
Bits 7-0 = 0x00
Bits 7-0 = 0x01
Bits 7-0 = 0x00
Bits 7-0 = 0x00
Bits 7-0 = 0x60
Bits 7-0 = 0x00
Bits 7-0 =0xX0 (Bits 7-4 = complement of modem inputs)
Bits 7-0 = 0x00
Bits 7-0 = 0xFF
Bits 7-0 = 0x00
Bits 7-0 = 0x00
Bits 7-0 = 0x00
Bits 7-0 = 0x01
Bits 7-0 = 0x00
Bits 7-0 = 0x00
Bits 7-0 = 0x00
Bits 7-0 = 0x00
Bits 7-0 = 0x00
Bits 7-0 = 0x00
Bits 7-0 = 0x00
Bits 7-0 = 0x00
Bits 7-0 = 0x00
Bits 7-0 = 0xFF
HIGH
HIGH
HIGH
Three-State Condition
HIGH
T
ABLE
19: UART RESET CONDITIONS
PRELIMINARY
50
RESET STATE
RESET STATE
REV. P1.1.1