Datasheet

UART
Intel
®
Quark™ microcontroller D2000
Datasheet January 2016
196 Document Number: 333577-002EN
14.3.1.1 Receive Buffer / Transmit Holding / Divisor Latch
Low (RBR_THR_DLL)
Receive Buffer Register(RBR), reading this register when the DLAB bit (LCR[7]) is
zero; Transmit Holding Register (THR), writing to this register when the DLAB is zero;
Divisor Latch Low (DLL), when DLAB bit is one.
MEM Offset (B0002000) 0B0002000h
Security_PolicyGroup
IntelRsvd False
Size 32 bits
Default 0000_0000h
Bits Access
Type
Default Description PowerWell ResetSignal
31:9 RO 23'b0 Reserved (RSV)
8 RW 1'h0 Receive Buffer / Transmit
Holding (FIELD2)
Different UART registers are
accessed depending on
read/write transfer type.
Transmit Holding register
(MSB 9th bit).
Access - Write
Data byte received on the
serial input port (sin) in UART
mode for the MSB 9th bit.
Receive Buffer register (MSB
9th bit).
Access - Read
Data byte received on the
serial input port (sin) in UART
mode, or the serial infrared
input (sir_in) in infrared mode.
The data in this register is
valid only if the Data Ready
(DR) bit in the Line Status
Register (LSR) is set.
7:0 RW 8'h00 Receive Buffer / Transmit
Holding / Divisor Latch
Low (FIELD)
Different UART registers are
accessed depending on
read/write transfer type and
Line control Register (LCR)
DLAB bit value.
RBR, Receive Buffer Register
Access - Read AND DLAB
(LCR[7]) =0