DS3170N+ Maxim Integrated Products, DS3170N+ Datasheet - Page 51
DS3170N+
Manufacturer Part Number
DS3170N+
Description
IC TXRX DS3/E3 100-CSBGA
Manufacturer
Maxim Integrated Products
Datasheet
1.DS3170.pdf
(230 pages)
Specifications of DS3170N+
Function
Single-Chip Transceiver
Interface
DS3, E3
Number Of Circuits
1
Voltage - Supply
3.135 V ~ 3.465 V
Current - Supply
120mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
100-LBGA
Includes
DS3 Framers, E3 Framers, HDLC Controller, On-Chip BERTs
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power (watts)
-
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9 INITIALIZATION AND CONFIGURATION
STEP 1: Check Device ID Code.
Before any testing can be done, the device ID code, which is stored in GL.IDR, shoud be checked against the
device ID code shown below to ensure correct device is being used.
Current device ID codes is:
STEP 2: Initialize the Device.
Before configuring for operation, make sure the device is in a known condition with all registers set to their default
value by initiating a Global Reset. (See Section 10.3.) A Global Reset can be initiated via the RST pin or by the
Global Reset bit (GL.CR1.RST). A Port Reset is not necessary since the global reset includes a reset of the port to
its default values.
STEP 3: Clear the Reset.
It is necessary to clear the RST bit to begin normal operation.
After clearing the RST bit, the device is configured for default mode.
Default mode:
STEP 4: Clear the Data Path Resets and the Port Power-Down bit.
The default value of the Data Path Resets is one, which keeps the internal logic in the reset status. The user
needs to clear the following bits:
STEP 5: Configure the CLAD
STEP 6: Select the clock source for the transmitter.
STEP 7: Configure the Framing Mode and the Line Mode..
STEP 8: Disable Payload AIS (downstream AIS) and Line AIS
STEP 9: Enable the port (for non-LIU modes)
o
Framer: C-bit DS3
LIU: Disabled
GL.CR1.RSTDP = 0
PORT.CR1.RSTDP = 0
PORT.CR1.PD = 0
If using the LIU, configure the CLAD (which supplies the clock to the Receive LIU) via the CLAD bits in
the
Note: The user must supply a DS3, E3, STS-1, 77.76 MHz, or 19.44 MHz clock to the REFCLK pin.
Loop Time (use the receive clock): Set PORT.CR3.LOOPT = 1
CLAD Source: Set PORT.CR3.CLADC = 0
TCLKI Source: Set PORT.CR3.CLADC = 1
If using the CLAD, properly configure the CLAD by setting the CLAD bits in
PORT.CR2.LM[2:0] = 011 (LIU on, JA in rx side) or another setting. See
PORT.CR2.FM[2:0] set to correct mode. See
PORT.CR1.PAIS[2:0] = 111
PORT.CR1.LAIS[1:0] = 11
PORT.CR2.TLEN = 1
GL.CR2
DS3170 rev 1.0:
register.
004Fh
51 of 230
Table 10-25.
DS3170 DS3/E3 Single-Chip Transceiver
Table 10-26
GL.CR2.
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