XRT84L38IB Exar Corporation, XRT84L38IB Datasheet - Page 152

• Manufacturer Part Number: XRT84L38IB
• Description: Network Controller & Processor ICs 8 Ch T1/E1 Framer
• Manufacturer: Exar Corporation

Specifications of XRT84L38IB

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

XRT84L38
OCTAL T1/E1/J1 FRAMER
Receive User IDLE Code Register (UCR) (Indirect Address = 0xn02H, 0x80H - 0x97H)
Receive Signaling Control Register (RSCR) (Indirect Address = 0xn2H, 0xA0H - 0xB7H)
B
B
Reserved
IT
IT
B
B
R/W
N
N
7-0
IT
IT
0
UMBER
0
UMBER
7
6
7
7
Receive User IDLE Code
Substitution
Reserved
Receive Signaling
Substitution Enable
Signaling
Receive
Enable
B
B
R/W
R/W
IT
IT
0
0
6
6
B
B
IT
IT
N
N
AME
AME
Signaling
Receive
Enable
Output
B
B
R/W
R/W
IT
IT
0
0
5
5
Receive User IDLE Code Bit [7:0]
B
B
IT
IT
R/W
R/W
De-bounce
T
T
Enable
YPE
YPE
B
B
R/W
R/W
IT
IT
0
0
4
4
Receive User IDLE Code:
These READ/WRITE bit-fields permits the user store any value
of IDLE code into the framer. When the Receive Data Condition-
ing Select [3:0] bits of RCCR register of a particular DS0 channel
are set to 0100, the received DS1 payload data are replaced by
contents of this register and sent to the Terminal Equipment.
Receive Signaling Substitution Enable:
When this bit is set to 0:
Signaling Substitution is disabled. The XRT84L38 framer will not
replace extracted signaling bits from the incoming DS1 payload
data with all ones or with signaling bits stored in RSSR registers.
When this bit is set to 1:
Signaling Substitution is enabled. The XRT84L38 framer will
replace extracted signaling bits from the incoming DS1 payload
data with all ones or with signaling bits stored in RSSR registers.
132
Control Bit 1
Substitution
Signaling
Receive
B
R/W
B
R/W
IT
0
IT
0
3
3
Control Bit 0
Substitution
Signaling
Receive
B
B
B
B
R/W
R/W
IT
IT
IT
IT
0
0
D
D
2
2
ESCRIPTION
ESCRIPTION
Control Bit 1
Extraction
Signaling
B
B
R/W
R/W
IT
IT
0
0
1
1
Control Bit 0
Extraction
Signaling
REV. 1.0.1
B
B
R/W
R/W
IT
IT
0
0
0
0