Samsung Exynos 5 User Manual

Samsung Confidential  
Exynos 5250_UM 12 Universal Asynchronous Receiver and Transmitter 
 12-18  
Name Bit Type Description Reset Value 
010 = 96 bytes 
011 = 128 bytes 
100 = 160 bytes 
101 = 192 bytes 
110 = 224 bytes 
111 = 256 bytes 
[Channel 1] 
000 = 8 byte 
001 = 16 bytes 
010 = 24 bytes 
011 = 32 bytes 
100 = 40 bytes  
101 = 48 bytes 
110 = 56 bytes  
111 = 64 bytes 
[Channel 2, 3] 
000 = 2 byte  
001 = 4 bytes 
010 = 6 bytes  
011 = 8 bytes 
100 = 10 bytes 
101 = 12 bytes 
110 = 14 bytes 
111...

Samsung Confidential  
Exynos 5250_UM 12 Universal Asynchronous Receiver and Transmitter 
 12-19  
12.6.1.4 UMCONn (n = 0, 1, 2, 4) 
 Base Address: 0x12C0_0000 (UART0) 
 Base Address: 0x12C1_0000 (UART1) 
 Base Address: 0x12C2_0000 (UART2) 
 Base Address: 0x12C3_0000 (UART3) 
 Base Address: 0x1319_0000 (ISP-UART) 
 Address = Base Address + 0x000C, Reset Value = 0x0000_0000  
Name Bit Type Description Reset Value 
RSVD [31:8] –=Reserved=0=
RTS trigger 
level=[7:5]=RW=
Determines=the trigger level...

Samsung Confidential  
Exynos 5250_UM 12 Universal Asynchronous Receiver and Transmitter 
 12-20  
Name Bit Type Description Reset Value 
Request to 
send [0] RW 
When AFC bit is enabled, this value is ignored. In this case 
the Exynos 5250 controls nRTS signals automatically. 
When AFC bit is disabled, the software must control nRTS 
signal. 
0 = H level (Inactivate nRTS)            
1 = L level (Activate nRTS) 
0 
NOTE:  
1. UART 2 supports AFC function, when XuRTSn_2 and XuCTSn_2 are set as nRTS2 and...

Samsung Confidential  
Exynos 5250_UM 12 Universal Asynchronous Receiver and Transmitter 
 12-21  
12.6.1.5 UTRSTATn (n = 0 to 4) 
 Base Address: 0x12C0_0000 (UART0) 
 Base Address: 0x12C1_0000 (UART1) 
 Base Address: 0x12C2_0000 (UART2) 
 Base Address: 0x12C3_0000 (UART3) 
 Base Address: 0x1319_0000 (ISP-UART) 
 Address = Base Address + 0x0010, Reset Value = 0x0000_0000  
Name Bit Type Description Reset Value 
RSVD [31:24] –=Reserved=0=
ox=FIFO=
count in Rx=
time-out 
status=
[23:16]=o=ox=FIFO...

Samsung Confidential  
Exynos 5250_UM 12 Universal Asynchronous Receiver and Transmitter 
 12-22  
Name Bit Type Description Reset Value 
occurred. 
Transmitter 
empty [2] R 
This bit is automatically set to 1 when the transmit buffer 
has no valid data to transmit, and the transmit shift is empty. 
0 = Buffer is not empty 
1 = Transmitter (that includes transmit buffer and shifter) 
empty 
1 
Transmit 
buffer empty [1] R 
This bit is automatically set to 1 when transmit buffer is 
empty. 
0 = Buffer is...

Samsung Confidential  
Exynos 5250_UM 12 Universal Asynchronous Receiver and Transmitter 
 12-23  
12.6.1.6 UERSTATn (n = 0 to 4) 
 Base Address: 0x12C0_0000 (UART0) 
 Base Address: 0x12C1_0000 (UART1) 
 Base Address: 0x12C2_0000 (UART2) 
 Base Address: 0x12C3_0000 (UART3) 
 Base Address: 0x1319_0000 (ISP-UART) 
 Address = Base Address + 0x0014, Reset Value = 0x0000_0000  
Name Bit Type Description Reset Value 
RSVD [31:4] –=Reserved=0=
Break 
detect=[3]=o=
This bit is automatically set to=1 to...

Samsung Confidential  
Exynos 5250_UM 12 Universal Asynchronous Receiver and Transmitter 
 12-24  
12.6.1.7 UFSTATn (n = 0 to 4) 
 Base Address: 0x12C0_0000 (UART0) 
 Base Address: 0x12C1_0000 (UART1) 
 Base Address: 0x12C2_0000 (UART2) 
 Base Address: 0x12C3_0000 (UART3) 
 Base Address: 0x1319_0000 (ISP-UART) 
 Address = Base Address + 0x0018, Reset Value = 0x0000_0000  
Name Bit Type Description Reset Value 
RSVD [31:25] –=Reserved=0=
Tx FIFO full=x24]=o=
This bit is automatically set to=1...

Samsung Confidential  
Exynos 5250_UM 12 Universal Asynchronous Receiver and Transmitter 
 12-25  
12.6.1.8 UMSTATn (n = 0, 1, 2, 4) 
 Base Address: 0x12C0_0000 (UART0) 
 Base Address: 0x12C1_0000 (UART1) 
 Base Address: 0x12C2_0000 (UART2) 
 Base Address: 0x12C3_0000 (UART3) 
 Base Address: 0x1319_0000 (ISP-UART) 
 Address = Base Address + 0x001C, Reset Value = 0x0000_0000  
Name Bit Type Description Reset Value 
RSVD [31:5] –=Reserved=0=
Delta CTp=x4]=o=
This bit indicates=that the nCTp=input to...

Samsung Confidential  
Exynos 5250_UM 12 Universal Asynchronous Receiver and Transmitter 
 12-26  
12.6.1.9 UTXHn (n = 0 to 4) 
 Base Address: 0x12C0_0000 (UART0) 
 Base Address: 0x12C1_0000 (UART1) 
 Base Address: 0x12C2_0000 (UART2) 
 Base Address: 0x12C3_0000 (UART3) 
 Base Address: 0x1319_0000 (ISP-UART) 
 Address = Base Address + 0x0020, Reset Value = 0x0000_0000  
Name Bit Type Description Reset Value 
RSVD [31:8] –=Reserved=–=
UTXHn=[7:0]=t=Transmit=Data for UARTn=–=
=
12.6.1.10 URXHn (n = 0...

Samsung Confidential  
Exynos 5250_UM 12 Universal Asynchronous Receiver and Transmitter 
 12-27  
12.6.1.12 UFRACVALn (n = 0 to 4)  
 Base Address: 0x12C0_0000 (UART0) 
 Base Address: 0x12C1_0000 (UART1) 
 Base Address: 0x12C2_0000 (UART2) 
 Base Address: 0x12C3_0000 (UART3) 
 Base Address: 0x1319_0000 (ISP-UART) 
 Address = Base Address + 0x002C, Reset Value = 0x0000_0000  
Name Bit Type Description Reset Value 
RSVD [31:4] –=Reserved=0=
rFRACVALn=x3:0]=RW=Determines=the fractional part of=Baud...