XRT94L33IB-L Exar Corporation, XRT94L33IB-L Datasheet - Page 146
XRT94L33IB-L
Manufacturer Part Number
XRT94L33IB-L
Description
IC MAPPER DS3/E3/STS-1 504TBGA
Manufacturer
Exar Corporation
Specifications of XRT94L33IB-L
Applications
Network Switches
Interface
Bus
Voltage - Supply
3.14 V ~ 3.47 V
Package / Case
504-LBGA
Mounting Type
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
XRT94L33IB-L
Manufacturer:
Exar Corporation
Quantity:
10 000
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XRT94L33
Rev.1.2.0.
Configuring the XRT94L33 to operate in the “1-Channel STS-3c (with 0 to 2-Channel DS3/E3) ATM
UNI/PPP Mode.
To configure the XRT94L33 to operate in this mode execute the following two steps.
STEP 1 - SET BITS 1 AND 0 (CONF[1:0]), WITHIN THE OPERATION CONTROL REGISTER – BYTE 3;
TO [0, 1]; AS DEPICTED BELOW.
Operation Control Register – Byte 3 (Address = 0x0100)
STEP 2 – SET BIT 2 (PPP/ATM*), WITHIN THE “OPERATION CONTROL REGISTER- BYTE 0” TO THE
APPROPRIATE VALUE AS DEPICTED BELOW.
Operation Control Register – Byte 0 (Address = 0x0103)
Setting this bit-field to “0” configures the XRT94L33 to operate in the ATM UNI Mode. Conversely, setting this
bit-field to “1” configures the XRT94L33 to operate in the PPP Mode.
Please refer to Section 4.0 for a description on how to configure the XRT94L33 to operate in the ATM UNI
Mode. Further, please refer to Section 5.0 for a description on how to configure the XRT94L33 to operate in
the PPP Mode.
1.5.2
If the user configures the XRT94L33 to operate in this mode, then the XRT94L33 will function as a 1-Channel
STS-3 ATM UNI/PPP device.
PLL OFF
Transmit
UTOPIA
B
B
R/W
R/W
IT
IT
X
0
7
7
1-C
HANNEL
PLL OFF
UTOPIA
Receive
CH_MODE_SEL[3:0]
B
B
R/W
R/W
IT
IT
X
0
6
6
STS-3 ATM UNI/PPP M
B
B
R/W
R/O
IT
IT
X
0
5
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC DATA SHEET
5
Unused
B
B
R/W
R/O
ODE
IT
IT
0
X
4
4
146
Dual Bus
B
B
R/O
R/W
IT
0
IT
X
3
3
PPP/ATM*
Unused
B
B
R/W
R/O
IT
IT
X
0
2
2
Unused
B
B
R/W
R/O
IT
0
IT
0
1
1
xr
CONF[1:0]
SW RESET
B
B
R/W
R/W
IT
IT
0
0
0
0
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