DS3170N+ Maxim Integrated Products, DS3170N+ Datasheet - Page 174
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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12.9 DS3/E3 framer
12.9.1 Transmit DS3
The transmit DS3 utilizes two registers.
Table 12-22. Transmit DS3 Framer Register Map
12.9.1.1 Register Bit Descriptions
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit #
Name
Default
Bit 12: P-bit Generation Enable (PBGE) – When 0, if transmit frame generation is disabled, Transmit Frame
Processor P-bit generation is disabled. The P-bit overhead periods in the incoming T3 signal will be passed
through to error insertion. When 1, Transmit Frame Processor P-bit generation is enabled. The P-bit overhead
periods in the incoming T3 signal will be overwritten even if transmit frame generation is disabled.
Bit 11: Transmit DS3 Idle Signal (TIDLE) –
Bit 10: C-bit Generation Disable (CBGD) (M23 mode only) – When 0, Transmit Frame Processor C-bit
generation is enabled. The C-bit overhead periods in the incoming M23 DS3 signal will be overwritten with zeros.
When 1, Transmit Frame Processor C-bit generation is disabled. The C-bit overhead periods in the incoming M23
DS3 signal will be treated as payload, and passed through to overhead insertion. This bit is ignored in C-bit DS3
mode.
Bit 5: Transmit FEBE Error (TFEBE) – When automatic far-end block error generation is defeated (AFEBED = 1),
the inverse of this bit is inserted into the bits C
indicates a far-end block error. This bit is ignored in M23 DS3 mode.
Bit 4: Automatic FEBE Defeat (AFEBED) – When 0, a far-end block error is automatically generated based upon
the receive C-bit parity errors or framing errors. When 1, a far-end block error is inserted from the register bit
TFEBE. This bit is ignored in M23 DS3 mode.
Bit 3: Transmit RDI Alarm (TRDI) – When automatic RDI generation is defeated (ARDID = 1), the inverse of this
bit is inserted into the X-bits (X
Bit 2: Automatic RDI Defeat (ARDID) – When 0, the RDI is automatically generated based received DS3 alarms.
When 1, the RDI is inserted from the register bit TRDI.
Address
11Ah
11Ch
11Eh
118h
0 = Transmit DS3 Idle signal is not inserted
1 = Transmit DS3 Idle signal is inserted into the DS3 frame.
15
T3.TCR
T3.TEIR
--
--
0
7
0
Register
--
--
14
--
--
0
6
0
1
T3 Transmit Control Register
T3 Transmit Error Insertion Register
Reserved
Reserved
and X
Register Description
T3.TCR
T3 Transmit Control Register
118h
2
). Note: an RDI value of zero (TRDI=1) indicates an alarm.
TFEBE
13
--
0
5
0
41
, C
42
AFEBED
174 of 230
PBGE
, and C
12
0
4
0
43
. Note: a far-end block error value of zero (TFEBE=1)
TIDLE
TRDI
11
0
3
0
DS3170 DS3/E3 Single-Chip Transceiver
ARDID
CBGD
10
0
2
0
TFGD
--
9
0
1
0
TAIS
--
8
0
0
0
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