Datasheet

UART
Intel
®
Quark™ microcontroller D2000
Datasheet January 2016
204 Document Number: 333577-002EN
14.3.1.5 MODEM Control (MCR)
Controls the interface with the MODEM or data set (or a peripheral device emulating a
MODEM).
MEM Offset (B0002000) 0B0002010h
Security_PolicyGroup
IntelRsvd False
Size 32 bits
Default 0000_0000h
Bits Access
Type
Default Description PowerWell ResetSignal
31:6 RO 26'b0 Reserved (RSV)
5 RW 1'h0 Auto Flow Control Enable
(AFCE)
When FIFOs are enabled and
the Auto Flow Control Enable
(AFCE) bit is set, Auto Flow
Control features are enabled
0 = Auto Flow Control Mode
disabled
1 = Auto Flow Control Mode
enabled
4 RW 1'h0 LoopBack Bit (LOOPBACK)
Used to put the UART into a
diagnostic mode for test
purposes. Data on the sout
line is held high, while serial
data output is looped back to
the sin line, internally. In this
mode all the interrupts are
fully functional. Also, in
loopback mode, the modem
control inputs (dsr_n, cts_n,
ri_n, dcd_n) are disconnected
and the modem control
outputs (dtr_n, rts_n, out1_n,
out2_n) are looped back to the
inputs, internally.
3 RW 1'h0 User designated Output 2
(OUT2)
Used to directly control the
user-designated Output2
(out2_n) output. The value
written to this location is
inverted and driven out on
out2_n, that is:
0 = out2_n de-asserted (logic
1)
1 = out2_n asserted (logic 0)