SC16C852L NXP Semiconductors, SC16C852L Datasheet - Page 25

• Manufacturer Part Number: SC16C852L
• Description: 16 mode or 68 mode bus interface
• Manufacturer: NXP Semiconductors

Table 10.
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
A2 A1 A0 Register
Enhanced feature register set
0
1
1
1
1
First extra feature register set
0
1
1
1
Second extra feature register set
0
1
1
1
The value shown represents the register’s initialized hexadecimal value; X = not applicable.
Accessible only when LCR[7] is logic 0, and EFCR[2:1] are logic 0.
This bit is only accessible when EFR[4] is set.
Baud rate registers accessible only when LCR[7] is logic 1.
Enhanced feature register, Xon1/Xon2 and Xoff1/Xoff2 are accessible only when LCR is set to 0xBF, and EFCR[2:1] are logic 0.
Second special registers are accessible only when EFCR[0] = 1, and EFCR[2:1] are logic 0.
First extra feature register set is only accessible when EFCR[2:1] = 01b.
Second extra feature register set is only accessible when EFCR[2:1] = 10b.
1
0
0
1
1
1
0
1
1
1
0
1
1
0
0
1
0
1
0
0
0
1
0
0
0
1
xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx
xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x
xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx
SC16C852L internal registers
EFR
Xon1
Xon2
Xoff1
Xoff2
TXINTLVL
RXINTLVL
FLWCNTH
FLWCNTL
CLKPRES
RS485TIME 0x00
AFCR2
AFCR1
Default
00
00
00
00
00
0x00
0x00
0x00
0x00
0x00
0x00
[5]
[7]
[8]
[1]
Bit 7
Auto CTS
bit 7
bit 15
bit 7
bit 15
bit 7
bit 7
bit 7
bit 7
reserved
bit 7
reserved
Concurrent
Write
…continued
Bit 6
Auto RTS
bit 6
bit 14
bit 6
bit 14
bit 6
bit 6
bit 6
bit 6
reserved
bit 6
reserved
reserved
Bit 5
special
character
select
bit 5
bit 13
bit 5
bit 13
bit 5
bit 5
bit 5
bit 5
reserved
bit 5
RS485 RTS
Invert
reserved
Bit 4
Enable
IER[7:4],
ISR[5:4],
FCR[5:4],
MCR[7:5]
bit 4
bit 12
bit 4
bit 12
bit 4
bit 4
bit 4
bit 4
reserved
bit 4
Auto RS485
RTS
Sleep
RXLow
Bit 3
Cont-3 TX,
RX Control
bit 3
bit 11
bit 3
bit 11
bit 3
bit 3
bit 3
bit 3
bit 3
bit 3
RS485
RTS/DTR
reserved
Bit 2
Cont-2 TX,
RX Control
bit 2
bit 10
bit 2
bit 10
bit 2
bit 2
bit 2
bit 2
bit 2
bit 2
Transmitter
Disable
RTS/CTS
mapped to
DTR/DSR
Bit 1
Cont-1 TX,
RX Control
bit 1
bit 9
bit 1
bit 9
bit 1
bit 1
bit 1
bit 1
bit 1
bit 1
Receiver
Disable
Software
Reset
Bit 0
Cont-0 TX,
RX Control
bit 0
bit 8
bit 0
bit 8
bit 0
bit 0
bit 0
bit 0
bit 0
bit 0
9-bit Enable R/W
TSR
Interrupt
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W