SCD1284 datasheet(122/176 Pages) INTEL

122 / 176 page

CD1284 — IEEE 1284-Compatible Parallel Interface Controller

122

Datasheet

7.3.2

Channel Control Status Register

The CCSR provides current receiver/transmitter status of the selected channel.

Bit

Description

7:5

Must be ‘0’.

Must be ‘1’.

3:0

Select channel enable/disable activity:

Access: Read only

8-Bit Hex Address: 0B

Default Value: 00

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

RxEN

RxFloff

RxFlon

TxEN

TxFloff

TxFlon

XMT EN

XMT DIS

RCV EN

RCV DIS

Encoding

Disable receiver.

Enable receiver.

Disable transmitter.

Enable transmitter.

Disable transmitter and receiver.

Disable transmitter; enable receiver.

Enable transmitter; disable receiver.

Enable transmitter and receiver.

Bit

Description

Receiver Enabled: This bit is set when the receiver is enabled and cleared when it is disabled.

Receiver Flow Off: This bit indicates that the receiver has requested the remote to stop transmitting through

the use of a send XOFF character by a send special character 2 command in the CCR. The bit is cleared

when a send special character 1 (XON) command is issued; the channel is either enabled or disabled, or the

channel is reset.

Receiver Flow On: When a send special character 1 (XON) command is issued by the CCR, this bit is set.

This bit is cleared when one of three events has occurred, 1) the first non-flow control character is received,

2) the receiver is either enabled or disabled, 3) or the channel is reset.

Reserved: This bit returns ‘0’ when read.

Transmitter Enabled: This bit is set when the transmitter is enabled and cleared when it is disabled.

SCD1284 Datasheet(PDF) 122 Page - Intel Corporation

SCD1284 Datasheet(HTML) 122 Page - Intel Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL