SB16C1058-TQFP128 IK Semicon Co., Ltd, SB16C1058-TQFP128 Datasheet - Page 48
SB16C1058-TQFP128
Manufacturer Part Number
SB16C1058-TQFP128
Description
Octal-uart Controller With 256-byte Fifo
Manufacturer
IK Semicon Co., Ltd
Datasheet
1.SB16C1058-TQFP128.pdf
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IN16C1058
OCTAL UART WITH 256-BYTE FIFO
JUNE 2009
48
REV 1.0
7.23 Additional Feature Register (AFR, Page 4)
7.24 Xoff Re-transmit Count Register (XRCR, Page 4)
AFR enables or disables the 256-byte FIFO mode and controls the global interrupt.
Table 23 shows AFR bit settings.
XRCR operates only when Software flow control is enabled by EFR[3:0] and Xoff Re-
transmit function of MCR[2] is also enabled. And it determines the period of
retransmission of Xoff character. Table 24 shows XRCR bit settings.
Table 23:
Bit
7:6
5
4
3:1
0
Table 24:
Bit
7:2
1:0
Symbol
AFR[7:6]
AFR[5]
AFR[4]
AFR[3:1]
AFR[0]
Symbol
XRCR[7:2]
XRCR[1:0]
Additional Feature Register Description
Xoff Re-transmit Count Register Description
Description
Not used, always ‘00’.
Global Interrupt Polarity Select
Global Interrupt Enable
Not used, always ‘000’.
256-byte FIFO Enable.
Description
Not used, always ‘0000_00’.
Xoff Re-transmit Count Select
0 : GINT pin outputs ‘0’ when interrupt is generated (default).
1 : GINT pin outputs ‘1’ when interrupt is generated.
0 : INT0/GINT pin is selected to INT0 (default).
1 : INT0/GINT pin is selected to GINT.
0 : 256-byte FIFO mode is disabled and this means IN16C1058
1 : 256-byte FIFO mode is enabled and ISR[7:6] operates as
00 : Transmits Xoff character whenever the number of received
01 : Transmits Xoff character whenever the number of received
10 : Transmits Xoff character whenever the number of received
11 : Transmits Xoff character whenever the number of received
operates as Non FIFO mode or 64-byte FIFO mode (default).
256-TX FIFO Empty and 256-RX FIFO Full.
data is 1 during XOFF status. (default)
data is 4 during XOFF status.
data is 8 during XOFF status.
data is 16 during XOFF status.
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