SB16C1058-TQFP128 IK Semicon Co., Ltd, SB16C1058-TQFP128 Datasheet - Page 34

• Manufacturer Part Number: SB16C1058-TQFP128
• Description: Octal-uart Controller With 256-byte Fifo
• Manufacturer: IK Semicon Co., Ltd

IN16C1058
OCTAL UART WITH 256-BYTE FIFO
JUNE 2009
Table 9:
A[2:0]
34
Addr.
0h
1h
2h
4h
5h
6h
7h
1h
2h
4h
5h
6h
7h
XOFF1
XOFF2
XRCR
XON1
XON2
Reg.
PSR
FUR
ATR
EFR
AFR
TTR
RTR
FLR
Internal Registers Description…continued
REV 1.0
Polarity
Enable
7.1 Transmit Holding Register (THR, Page 0)
7.2 Receive Buffer Register (RBR, Page 0)
RXEN
Select
NCTS
Auto-
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
Bit 7
1
0
0
The transmitter section consists of the Transmit Holding Register (THR) and Transmit
Shift Register (TSR). The THR is actually a 64-byte FIFO or a 256-byte FIFO. The THR
receives data and shifts it into the TSR, where it is converted to serial data and moved out
on the TX terminal. If the FIFO is disabled, location zero of the FIFO is used to store the
byte. Characters are lost if overflow occurs.
The receiver section consists of the Receive Buffer Register (RBR) and Receive Shift
Register (RSR). The RBR is actually a 64-byte FIFO or a 256-byte FIFO. The RSR
receives serial data from external terminal. The serial data is converted to parallel data
and is transferred to the RBR. This receiver section is controlled by the line control
register. If the FIFO is disabled, location zero of the FIFO is used to store the characters.
If overflow occurs, characters are lost. The RBR also stores the error status bits
associated with each character.
Enable
Enable
RXEN
NRTS
Auto-
Bit 6
Bit 6
Bit 6
Bit 6
Bit 6
Bit 6
Bit 6
Bit 6
Bit 6
0
0
0
Character
Interrupt
Polarity
Polarity
Special
Enable
Detect
Global
Select
Select
TXEN
Bit 5
Page 3 Registers
Bit 5
Bit 5
Bit 5
Bit 5
Page 4 Registers
Bit 5
Bit 5
Bit 5
Bit 5
1
0
Enhanced
Interrupt
Feature
Enable
Enable
Enable
Global
TXEN
Bit 4
Bit 4
Bit 4
Bit 4
Bit 4
Bit 4
Bit 4
Bit 4
Bit 4
0
0
Software
Control
Bit 3
Flow
Bit 3
Bit 3
Bit 3
Bit 3
Bit 3
Bit 3
Bit 3
Bit 3
Bit 3
0
0
0
0
Software
Control
Bit 2
Flow
Bit 2
Bit 2
Bit 2
Bit 2
Bit 2
Bit 2
Bit 2
Bit 2
Bit 2
1
0
0
0
Software
Control
Toggle
Mode
Bit 1
Flow
Auto
Bit 1
Bit 1
Bit 1
Bit 1
Bit 1
Bit 1
Bit 1
Bit 1
Bit 1
Bit 1
Bit 1
0
0
256-FIFO
Software
Control
Enable
Toggle
Select
Mode
Page
Bit 0
Flow
Auto
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0
Bit 0