STLC5464 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STLC5464

MULTI-HDLC WITH n x 64 SWITCHING MATRIX ASSOCIATED

STMicroelectronics 

STLC5464

VIII - INTERNAL REGISTERS (continued)

VIII.23 - Transmit Monitor Address Register - TMAR (2C)H

bit15

bit8 bit7

bit 0

0 G0 MA2 MA1 MA0 READ Nu Nu Nu Nu TIV FABT L NOB 0 Nu

After reset (000F)H

When this register is written by the microprocessor, these different bits mean :

READ : READ MON MEMORY

READ=1, READ MON MEMORY.

READ=0, WRITE MON MEMORY.

MA 0/2 : TRANSMIT MONITOR ADDRESS

MA 0/2 :These bits define one of eight Monitor Channel if validated.

G0 : This bit defines one of two GCI multiplexes.

G0 = 0, TDM4 is selected.

G0 = 1, TDM5 is selected.

NOB : NUMBER OF BYTE to be transmitted

NOB = 1, One byte to transmit.

NOB = 0, Two bytes to transmit.

L

: Last byte

L = 1, the word (or the byte) located in the Transmit Monitor Data Register (TMDR) is the last.

L = 0, the word (or the byte) located in the Transmit Monitor Data Register (TMDR) is not the

last.

FABT : FABT = 1, the current message is aborted by the transmitter.

TIV : Timer interrupt is Validated

TIV = 1, Time Out alarm generates an interrupt when the timer has expired.

TIV = 0, Time Out alarm is masked.

If 8 bit microprocessor the Data (TMDR Register) is taken into account by the transmitter after writing bits

8 to 15 of this register.

Transmit Monitor Address Register (after reading)

bit15

bit8 bit7

0 G0 MA2 MA1 MA0 READ Nu Nu Nu Nu TO ABT

bit 0

L NOBT EXE IDLE

When this register is read by the microprocessor, these different bits mean :

READ, MA0/2, G0 have same definition as already described for the write register cycle.

IDLE : When this bit is at ”1”, IDLE (all 1’s) is transmitted during the channel validation.

EXE : EXECUTED

When this status bit is at ”1”, the command written previously by the microprocessor has been

executed and a new word can be stored in the Transmit Monitor Data Register (TMDR) by the

microprocessor.

When this bit is at ”0”, the command written previously by the microprocessor has not yet been

executed.

NOBT : NUMBER OF BYTE which has been transmitted.

NOBT = 1, the first byte is transmitting.

NOB T = 0, the second byte is transmitting, the first byte has been transmitted.

L

: Last byte ; this L bit is the L bit which has been written by the microprocessor.

ABT : ABORT

ABT=1, the remote receiver has aborted the current message.

TO : Time Out one millisecond

TO = 1, the remote receiver has not acknowledged the byte which has been transmitted one

millisecond ago.

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