Table 5.2. Register Address List For The 16552 And 16654 - Contec COM-2(PCI) User Manual

Table 5.2. Register Address List for the 16552 and 16654

4
Bit MODEM
No. Control
Register
MCR
0 Data
Terminal
Ready
(DTR)
1 Request
to Send
(RTS)
2 Out 1
0: INT Enable
1: INT Disable
*1
3 0
4 Loop
5 Xon Transmitter
Any
*2
6 IR Transmitter
Enable
*2
7 0
*1 : See " Using Interrupts ".
*2 : Each bit is 0 fixations in 16552.
COM-2(PCI), COM-4(PCI), COM-8(PCI)
(Short from Texas Instruments data book) < 2 / 2 >
5 6
Line MODEM
Status Status
Register Register
LSR MSR
Data Delta
Ready Clear
(DR) to Send
(DCTS)
Overrun Delta
Error Data
(OE) Set Ready
(DDSR)
Parity Trailing
Error Edge Ring
(PE) Indicator
(TERI)
Framing Delta
Error Data
(FE) Carrier Detect
(DDCD)
Break Clear
Interrupt to Send
(BI) (CTS)
Data
Holding Set
Register Ready
(THRE) (DSR)
Ring
Empty Indicator
(TEMT) (RI)
Error in Data
FIFO Carrier
Detect
I/O Ports and Registers
Register
7 0 DLAB = 1
Scratch
Register
SCR
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
1 DLAB =1
Divisor Divisor
Latch Latch
(LS) (MS)
DLL DLM
Bit 0 Bit 8
Bit 1 Bit 9
Bit 2 Bit 10
Bit 3 Bit 11
Bit 4 Bit 12
Bit 5 Bit 13
Bit 6 Bit 14
Bit 7 Bit 15
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