stlc5464 STMicroelectronics, stlc5464 Datasheet - Page 65

• Manufacturer Part Number: stlc5464
• Description: Multi-hdlcwith Switching Matrix Associated
• Manufacturer: STMicroelectronics

VIII - INTERNAL REGISTERS (continued)
AR21 : Address Recognition 21
VIII.15 - Address Field Recognition Address Register - AFRAR (1C)H
The write operation is lauched when AFRAR is written by the microprocessor.
READ : READ ADDRESS FIELD RECOGNITION MEMORY
CH0/4 : These five bits define one of 32 channels in reception
bit15
CH4
CH3
AR21 = 1, Second byte after opening flag of received frame is compared to all ”1”s. If the
Second byte received is not all ”1”s the frame is ignored.
AR21 = 0, Second byte after opening flag of received frame is not compared to all ”1”s.
READ=1, READ AFR MEMORY.
READ=0, WRITE AFR MEMORY.
Second Byte
AR21 AR20 AR11 AR10
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
CH2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
CH1
First Byte
CHO
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
READ
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Each frame is received without condition.
Only value of the first received byte must be equal to that of AF0/7 bits.
Only value of the first received byte must be equal to all ”1”s.
The value of the first received byte must be equal either to that of AF0/7 or
to all ”1”s.
Only value of the second received byte must be equal to that of AF8/15 bits.
The value of the first received byte must be equal to that of AF0/7 bits and
the value of the second received byte must be equal to that of AF8/15 bits.
The value of first received byte is must be equal to all ”1”s and the value of
second received byte must be equal to that of AF8/15 bits.
The value of the first received byte must be equal either to that of AF0/7 or
to all ”1”s and the value of the second received byte must be equal to that
of AF8/15 bits.
Only the value of the second received byte must be equal to all ”1”s.
The value of the first received byte must be equal to that of AF0/7 bits and
the value of the second received byte must be equal to all ”1”s.
The value of the first received byte must be equal to all ”1”s and the value of
the second received byte must be equal to ”1” also.
The value of the first received byte must be equal either to that of AF0/7 or
to ”1” and the value of the second received byte must be equal to all ”1”s.
The value of the second received byte must be equal either to that of AF8/15
or to all ”1”s.
The value of the first received byte must be equal to that of AF0/7 bits and
the value of the second received byte must be equal either to that of AF8/15
or to all ”1”s.
The value of the first received byte must be equal to ”1” and the value of the
second received byte must be equal either to that of AF8/15 or to all ”1”s.
The value of the first received byte must be equal either to that of AF0/7 or
to ”1” and the value of the second received byte must be equal either to that
of AF8/15 or to all ”1”s.
Nu
After reset (0000)
bit8
Nu
bit7
r
Conditions to Receive a Frame
H
e
s
e
r
v
STLC5464
e
bit 0
65/83
d