XRT84L38IB Exar Corporation, XRT84L38IB Datasheet - Page 245

• 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

REV. 1.0.1
The High-speed Back-plane Interface supports payload data to be taken from or presented to the local
Terminal Equipment at a rate higher than 1.544Mbit/s. In DS1 mode, supported High-speed data rates are
MVIP 2.048Mbit/s, 4.096Mbit/s, 8.192Mbit/s, multiplexed 12.352Mbit/s, multiplexed 16.384Mbit/s, HMVIP
16.384Mbit/s or H.100 16.384Mbit/s. The Receive Multiplex Enable bit and the Receive Interface Mode Select
[1:0] bits of the Receive Interface Control Register (RICR) determine the Receive Back-plane Interface data
rate.
The following table shows configurations of the Receive Multiplex Enable bit and the Receive Interface Mode
Select [1:0] bits of the Receive Interface Control Register (RICR).
RECEIVE INTERFACE CONTROL REGISTER (RICR) (INDIRECT ADDRESS = 0xn0H, 0x22H)
F
BLOCK TO THE LOCAL
5.1.3
N
IGURE
UMBER
B
1-0
RxTSb[1]/RxFrTD
RxTSb[2]/RxTSb
2
IT
RxTSb[0]/RxSig
RxSync(output)
RxSync(input)
48. W
RxTSb[4:0]
RxSerClk
High Speed Receive Back-plane Interface
Multiplex Enable
RxTSClk
RxTSClk
Interface Mode
RxSer
B
AVEFORMS OF THE
Receive
Receive
IT
Select
N
AME
T
ERMINAL
c1 c2 c3 c4 c5
B
Timeslot #0
Timeslot 0
IT
R/W
R/W
T
E
YPE
S
QUIPMENT WHEN THE
A B
IGNALS THAT
C
0 - The Receive Back-plane Interface block is configured to non-channel-multi-
plexed mode.
1 - The Receive Back-plane Interface block is configured to channel-multiplexed
mode
When combined with the Receive Multiplex Enable bit, these bits determine the
Receive Back-plane Interface data rate.
D
C
c1 c2 c3 c4 c5
ONNECT THE
Timeslot #5
Timeslot 5
225
S
LIP
A B
B
UFFER IS ACTED AS
R
C
ECEIVE
D
c1 c2 c3 c4 c5
1
B
IT
2
Timeslot #6
Timeslot 6
Input Data
D
3
P
ESCRIPTION
AYLOAD
4
A B
5
6
C
7
FIFO
D
D
8
OCTAL T1/E1/J1 FRAMER
ATA
O
UTPUT
c1 c2 c3 c4 c5
Timeslot #16
Timeslot 16
Input Data
I
XRT84L38
NTERFACE
A B
C
D