DP8344 datasheet(171/184 Pages) NSC

171 / 184 page

60 Reference Section (Continued)

TMR

TRANSCEIVER MODE REGISTER

Alternate R7 readwrite

TRES

LOOP

RPEN

RIN

TIN

PS2

PS1

PS0

TRES

Transceiver RESet

Resets transceiver

when high Transceiver can also be reset by

RESET without affecting TRES

LOOP

Internal LOOP-back

When high TX-ACT

is disabled (held at 0) and transmitter serial

data is internally directed to the receiver serial

data input

RPEN

RePeat ENable

When high the receiver

can be active at the same time as the trans-

mitter

RIN

Receiver INvert

When high the receiver

serial data is inverted

TIN

Transmitter INvert

When high the trans-

mitter serial data outputs are inverted

PS2–0

Protocol Select

Selects protocol for both

transmitter and receiver

PS2 – 0 Protocol

0 0 0

3270

0 0 1

3299 multiplexer

0 1 0

3299 controller

0 1 1

3299 repeater

1 0 0

5250

1 0 1

5250 promiscuous

1 1 0

8-bit

1 1 1

8-bit promiscuous

Further information Section 30 Transceiver

TRH

TIMER REGISTER

HIGH

Main R29 readwrite

765432

TM15 TM14 TM13 TM12 TM11 TM10 TM9 TM8

TM15 – 8

TiMer

Inputoutput port of high byte of timer

Further information Section 2114 Timer Reg-

isters

171

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