CD2231

Manufacturer Part NumberCD2231
DescriptionCD2231 Intelligent Two-channel Lan And Wan Communications Controller
ManufacturerIntel Corporation
CD2231 datasheet
 
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Intelligent Two-Channel LAN and WAN Communications Controller — CD2231
8.2.14.3
Transmit Special Mapped Character 3 (TSPMAP3)
Register Name: TSMAP3
Register Description: Special Mapped Transmit Character 3
Default Value: x’00
Access: Byte Read/Write
Bit 7
Bit 6
Bit 5
The three TSPMAP registers are used to provide control character escape processing on characters
outside the 00–1f (hex) range. Each of these three registers are scanned to match the character
currently being transmitted; if a match occurs, that character is ‘escaped’ before transmission. If a
zero value is found in any of them, the scan is terminated. (Zero is already covered in the standard
TXACCM.)
8.2.15
Transmit Async Control Character Maps — PPP Mode Only
8.2.15.1
Transmit Async Control Character Map 0 (TXACCM0)
Register Name: TXACCM0
Register Description: Transmit Async Control Character Map 0
Default Value: x’00
Access: Byte Read/Write
Bit 7
Bit 6
Bit 5
Char. 07
Char. 06
Char. 05
8.2.15.2
Transmit Async Control Character Map 1 (TXACCM1)
Register Name: TXACCM1
Register Description: Transmit Async Control Character Map 1
Default Value: x’00
Access: Byte Read/Write
Bit 7
Bit 6
Bit 5
Char. 0F
Char. 0E
Char. 0D
Datasheet
Bit 4
Bit 3
User-defined mapped transmit character
Bit 4
Bit 3
Char. 04
Char. 03
Bit 4
Bit 3
Char. 0C
Char. 0B
Intel Hex Address: x’2D
Motorola Hex Address: x’2E
Bit 2
Bit 1
Bit 0
Intel Hex Address: x’1C
Motorola Hex Address: x’1F
Bit 2
Bit 1
Bit 0
Char. 02
Char. 01
Char. 00
Intel Hex Address: x’1D
Motorola Hex Address: x’1E
Bit 2
Bit 1
Bit 0
Char. 0A
Char. 09
Char. 08
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