ibm3206k0424 ETC-unknow, ibm3206k0424 Datasheet - Page 505

• Manufacturer Part Number: ibm3206k0424
• Description: Ibm Processor For Network Resources
• Manufacturer: ETC-unknow

Preliminary
Entity 19: RS-232 Interface Logic (RS-232)
The RS232 entity provides a means by which an external debugger and the processor core can communi-
cate. The RS-232 operates a one-or four-byte wide basis.
RS-232 Interface Logic Registers
19.1: RS-232 Control Register
This register controls the operation of the RS-232 logic. See Note on Set/Clear Type Registers on page 93 for
more details on addressing.
Length
Type
DCR Address
Power On Value
Restrictions
pnr25.chapt05.01
August 14, 2000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
31-10
Bit(s)
9
8
7
6
5
4
3
2
Reserved
Byte Wide Mode
Internal Wrap Mode
Force RTS Active
Force DSR Active Internal
Force CTS Active Internal
Stop Bits
Parity Enable
Odd/Even Parity
Name
32 bits
Read/Write
X’210’ AND 211’
X’00000000’
None
Reserved
Reserved
This bit set to ’1’ makes the port operate in byte-wide mode. When a transmit is
started, only bits 7-0 of the transmit buffer are sent. A receive interrupt is generated
whenever a byte is received.
This bit set to ’1’ connects the transmit data stream to the receive data stream.
This bit set to ’1’ forces RTS to be driven active, regardless of what the transmit state
machine is doing.
This bit set to ’1’ forces DSR internal to RS-232 to appear active, regardless of the
DSR input's state.
This bit set to ’1’ forces CTS internal to RS-232 to appear active, regardless of the
CTS input's state.
This bit set to ’1’ indicates the port should use two stop bits. This bit set to ’0’ indicates
the port should use one stop bit.
This bit set to ’1’ enables parity.
If parity is enabled, this bit, set to ’1’, sets the parity type to odd. This bit set to ’0’ sets
the parity type to even.
Description
IBM Processor for Network Resources
8
RS-232 Interface Logic (RS-232)
7
6
5
4
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