DS3181 Maxim Integrated Products, DS3181 Datasheet - Page 312

• Manufacturer Part Number: DS3181
• Description: Network Controller & Processor ICs DS3-E3 ATM-Packet PH Y with Built-in Line
• Manufacturer: Maxim Integrated Products

Specifications of DS3181

• Product: Framer
• Number Of Transceivers: 1
• Data Rate: 44.736 Mbps
• Supply Voltage (max): 3.465 V
• Supply Voltage (min): 3.135 V
• Supply Current (max): 280 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Package / Case: TEBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

12.11 Fractional DS3/E3
12.11.1 Fractional Transmit Side Register Map
The transmit side uses three registers.
Table 12-41. Fractional Transmit Side Register Map
12.11.1.1 Register Bit Descriptions
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit #
Name
Default
Bits 2 to 1: Transmit Fractional Overhead Source Control (TFOSC[1:0]) – These two bits control the source of
the transmit fractional overhead.
Bit 0: Transmit Section A Source Select (TSASS)
(1,3,5,7)40h
(1,3,5,7)42h
(1,3,5,7)44h
(1,3,5,7)46h
ADDRESS
00 = all zeros.
01 = all ones.
10 = 1010 pattern.
11 = external (TFOH).
0 = Section A contains fractional overhead
1 = Section A contains payload data
15
—
—
0
7
0
FRAC.TDGSR
FRAC.TSASR
REGISTER
FRAC.TCR
—
14
—
—
0
6
0
FRAC.TCR
Fractional Transmit Control Register
(1,3,5,7)40h
Fractional Transmit Control Register
Fractional Transmit Data Group Size Register
Fractional Transmit Section A Size Register
Unused
13
—
—
0
5
0
REGISTER DESCRIPTION
12
—
—
0
0
4
312
11
—
—
0
3
0
TFOSC1
10
—
0
2
0
TFOSC0
—
9
0
1
0
TSASS
—
8
0
0
0