F81867 Datasheet, PDF (206/315 Pages) Feature Integration Technology Inc. – 6 UARTs μSuper IO With 128 Bytes FIFO and Power Saving Functions

F81867
9bit-mode Slave Address Register ⎯ Index F4h
Bit
Name
R/W Reset Default
Description
This byte accompanying with SADEN will determine the given address and
broadcast address in 9-bit mode. The UART will response to both given and
broadcast address.
Following description determines the given address and broadcast address:
21. given address: If bit n of SADEN is “0”, then the corresponding bit of
SADDR is don’t care.
22. broadcast address: If bit n of ORed SADDR and SADEN is “0”, don’t care
7-0
SADDR
R/W LRESET# 00h
that bit. The remaining bit which is “1” is compared to the received
address.
Ex.
SADDR
0101_1100b
SADEN
1111_1001b
Given Address
0101_1xx0b
Broadcast Address
1111_11x1b
9bit-mode Slave Address Mask Register ⎯ Index F5h
Bit
Name
R/W Reset Default
Description
This byte accompanying with SADDR will determine the given address and
broadcast address in 9-bit mode. The UART will response to both given and
broadcast address.
Following description determines the given address and broadcast address:
23. given address: If bit n of SADEN is “0”, then the corresponding bit of
SADDR is don’t care.
24. broadcast address: If bit n of ORed SADDR and SADEN is “0”, don’t care
7:0
SADEN
R/W LRESET# 00h
that bit. The remaining bit which is “1” is compared to the received
address.
Ex.
SADDR
0101_1100b
SADEN
1111_1001b
Given Address
0101_1xx0b
Broadcast Address
1111_11x1b
FIFO Select Register ⎯ Index F6h
Bit
Name
R/W Reset Default
Description
7
TX_DEL_1BIT
R/W LRESET#
6
TX_INT_MODE R/W LRESET#
5-4 RXFTHR_MODE R/W LRESET#
0
0: TX will start transmit immediately after writing THR.
1: TX will delay 1 bit time to transmit after writing THR.
0
0: TX will assert interrupt when THR is empty.
1: TX will assert interrupt when THR and shift register is empty.
The RX FIFO threshold select.
00: FIFO threshold is set by RXFTHR.
0 01: FIFO threshold will be 2X of RXFTHR.
10: FIFO threshold will be 4X of RXFTHR.
11: FIFO threshold will be 8X of RXFTHR.
206
Dec, 2011
V0.12P