STLC5464 datasheet(80/83 Pages) STMICROELECTRONICS

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IX.5.2 - Receive Command / Indicate Interrupt when TSV = 1

Time Stamping validated (bit of GCR Register)

bit15

bit8

bit7

bit 0

T15

T14

T13

T12

T11

T10

T8T7T6

T5T4

T3T2T1

These two words are located in the Command/Indicate interrupt queue ; IQSR Register indicates the size

of this interrupt queue located in the external memory.

: New Status.

Before writing the features of event in the external memory the Interrupt Controller reads the

NS bit :

if NS = 0, the Interrupt Controller puts this bit at ‘1’ when it writes the new primitive which has

been received.

if NS = 1, the Interrupt Controller puts ICOV bit at ‘1’ to generate an interrupt (IR Register).

When the microprocessor has read the status word, it puts this bit at ‘0’ to acknowledge the new

status. This location becomes free for the Interrupt Controller.

: G0 = 0, GCI 0 corresponding to DIN4 input and DOUT4 output.

G0 = 1, GCI 1 corresponding to DIN5 input and DOUT5 output.

A2/0

: COMMAND/INDICATE Channel 0 to 7 being owned by GCI 0 or GCI 1

C6/1

: New Primitive received twice consecutively

T15/0 : Binary counter value when a new primitive is occurred.

IX.6 - Receive Monitor Interrupt

IX.6.1 - Receive Monitor Interrupt when TSV = 0

TSV : Time Stamping not Validated (bit of GCR Register)

bit15

bit8

bit7

bit 0

ODD

M18

M17

M16

M15

M14

M13

M12

M11

These two words are transferred into the Monitor interrupt queue ; IQSR Register indicates the size of this

interrupt queue located in the external memory.

: New Status.

Before writing the features of event in the external memory the Interrupt Controller reads the

NS bit :

if NS = 0, the Interrupt Controller stores two new bytes M1/8 and M11/18 then puts NS bit at ‘1’

when it writes the status of these two bytes which has been received.

if NS = 1, the Interrupt Controller puts ICOV bit at ‘1’ to generate an interrupt (IR Register).

: G0 = 0, GCI 0 corresponding to DIN4 input and DOUT4 output.

G0 = 1, GCI 1 corresponding to DIN5 input and DOUT5 output.

: Last byte

L = 1, the following word containsthe Last byte of messageif ODD =1, the previous word contains

the Last byte of message if ODD = 0.

L = 0, the following word and the previous word does not contains the Last byte of message.

: First byte

F=1, the following word contains the First byte of message.

F=0, the following word does not contain the First byte of message.

: Abort

A=1, Received message has been aborted.

IX - EXTERNAL REGISTERS (continued)

STLC5464

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