13 UART (UART3)
13-16
Seiko Epson Corporation
S1C31D50/D51 TECHNICAL MANUAL
(Rev. 2.00)
UART3 Ch.
n
Transmit Buffer Empty DMA Request Enable Register
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
UART3_nT
BEDMAEN
15–0 TBEDMAEN[15:0]
0x0000
H0
R/W –
Bits 15–0 TBEDMAEN[15:0]
These bits enable the UART3 to issue a DMA transfer request to the corresponding DMA controller
channel (Ch.0–Ch.15) when a transmit buffer empty state has occurred.
1 (R/W): Enable DMA transfer request
0 (R/W): Disable DMA transfer request
Each bit corresponds to a DMA controller channel. The high-order bits for the unimplemented chan-
nels are ineffective.
UART3 Ch.
n
Receive Buffer One Byte Full DMA Request Enable Register
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
UART3_n
RB1FDMAEN
15–0 RB1FDMAEN[15:0]
0x0000
H0
R/W –
Bits 15–0 RB1FDMAEN[15:0]
These bits enable the UART3 to issue a DMA transfer request to the corresponding DMA controller
channel (Ch.0–Ch.15) when a receive buffer one byte full state has occurred.
1 (R/W): Enable DMA transfer request
0 (R/W): Disable DMA transfer request
Each bit corresponds to a DMA controller channel. The high-order bits for the unimplemented chan-
nels are ineffective.
UART3 Ch.
n
Carrier Waveform Register
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
UART3_nCAWF
15–8 –
0x00
–
R
–
7–0 CRPER[7:0]
0x00
H0
R/W
Bits 15–8 Reserved
Bits 7–0
CRPER[7:0]
These bits set the carrier modulation output frequency. For more information, refer to “Carrier Modu-
lation.”