DS2151QB+ Maxim Integrated Products, DS2151QB+ Datasheet - Page 38

• Manufacturer Part Number: DS2151QB+
• Description: IC TXRX T1 1-CHIP 5V LP 44-PLCC
• Manufacturer: Maxim Integrated Products

Specifications of DS2151QB+

• Function: Single-Chip Transceiver
• Interface: T1
• Number Of Circuits: 1
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 65mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 44-LCC, 44-PLCC
• Includes: Alarm Detector and Generator, CSU Loop Codes Generator and Detector, DSX-1 and CSU Line Build-Outs Generator
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -

12 RECEIVE MARK REGISTERS
The DS2151Q can replace the incoming data on a channel-by-channel basis with either an idle code (7F
hex) or the digital milliwatt code, which is an 8-byte repeating pattern that represents a 1kHz sine wave
(1E/0B/0B/1E/9E/8B/8B/9E). The RCR2.7 bit will determine which code is used. Each bit in the RMRs,
represents a particular channel. If a bit is set to a 1, then the receive data in that channel will be replaced
with one of the two codes. If a bit is set to 0, no replacement occurs.
RMR1/RMR2/RMR3: RECEIVE MARK REGISTERS (Address=2D to 2F Hex)
(MSB)
CH16
CH24
CH8
SYMBOL
CH24
CH1
CH15
CH23
CH7
CH14
CH22
CH6
POSITION
RMR3.7
RMR1.0
CH13
CH21
CH5
NAME AND DESCRIPTION
Receive Channel Blocking Registers.
0 = do not affect the receive data associated with this
channel
with either the idle code or the digital milliwatt code
(depends on the RCR2.7 bit)
1 = replace the receive data associated with this channel
CH12
CH20
38 of 60
CH4
CH11
CH19
CH3
CH10
CH18
CH2
(LSB)
CH17
CH1
CH9
RMR1 (2D)
RMR2 (2E)
RMR3 (2F)