F81866A Datasheet, PDF (120/210 Pages) Feature Integration Technology Inc. – 6 UARTs Super IO With 128 Bytes FIFO and Power

F81866A
7.1.11Multi-function Select 2 Register ⎯ Index 28h (Available when GPIO_PROG_SEL[0] = 1)
Bit
Name
R/W _Reset Default
Description
7-2
Reserved
-
-
- Reserved
0: The pin function is ALERT#/GPIO20/SCL.
1
PIN76_EN
R/W VBAT
0
1: Reserved.
0: The pin function is BEEP/GPIO16/SDA.
0
PIN71_EN
R/W VBAT
0
1: Reserved.
7.1.12Multi Function Select 3 Register ⎯ Index 29h (Available when CLK_ TUNE_PROG_EN = 0)
Bit
Name
R/W Reset Default
Description
7-6
UART4_FUNC_SE
L
R/W
5VSB
UART4 Function Select.
00: No UART4 pin. Pin 44 ~ 51 are all GPIOs.
01: Simple UART, only SIN4 and SOUT4 are available. Pin 50 will be
0 function as SOUT4 and Pin 51 will be function as SIN4.
10: Simple UART with RTS# function only. Pin 48 will be function as
RTS4#.
11: Full UART, pin 44 ~ 51 will be function as UART pins.
UART3_FUNC_SE
5-4
L
R/W 5VSB
UART3 Function Select.
00: No UART3 pin. Pin 36 ~ 43 are all GPIOs.
01: Simple UART, only SIN3 and SOUT3 are available. Pin 42 will be
0 function as SOUT3 and Pin 43 will be function as SIN3.
10: Simple UART with RTS# function only. Pin 40 will be function as
RTS3#.
11: Full UART, pin 36 ~ 43 will be function as UART pins.
3 SCL_PIN76_EN R/W 5VSB
0: Disable SCL from pin 76.
1: Enable SCL from pin 76.
0 _{There is only one slave in the current design, it is recommended to}
select only one pin for SCL. When multi pins are selected, the priority of
these bits is MO_I2C_EN > SCL_PIN76_EN > SCL_PIN67_EN.
2 SDA_PIN71_EN R/W 5VSB
0: Disable SDA from pin 76.
1: Enable SDA from pin 76.
0 _{There is only one slave in the current design, it is recommended to}
select only one pin for SDA. When multi pins are selected, the priority of
these bits is MO_I2C_EN > SDA_PIN71_EN > SDA_PIN68_EN.
1 SDA_PIN68_EN R/W 5VSB
0: Disable SDA from pin 68.
1: Enable SDA from pin 68.
1 _{There is only one slave in the current design, it is recommended to}
select only one pin for SDA. When multi pins are selected, the priority of
these bits is MO_I2C_EN > SDA_PIN71_EN > SDA_PIN68_EN.
0 SCL_PIN67_EN R/W 5VSB
0: Disable SCL from pin 67.
1: Enable SCL from pin 67.
1 _{There is only one slave in the current design, it is recommended to}
select only one pin for SCL. When multi pins are selected, the priority of
these bits is MO_I2C_EN > SCL_PIN76_EN > SCL_PIN67_EN.
120
Jan, 2012
V0. 12P