DS2152LN Maxim Integrated Products, DS2152LN Datasheet - Page 54

• Manufacturer Part Number: DS2152LN
• Description: Network Controller & Processor ICs
• Manufacturer: Maxim Integrated Products

Specifications of DS2152LN

• Product: Framer
• Number Of Transceivers: 1
• Data Rate: 2.048 Mbps
• Supply Voltage (max): 5.25 V
• Supply Voltage (min): 4.75 V
• Supply Current (max): 75 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Package / Case: LQFP-100
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10 CLOCK BLOCKING REGISTERS
The Receive Channel Blocking Registers (RCBR1/RCBR2/RCBR3) and the Transmit Channel Blocking
Registers (TCBR1/TCBR2/TCBR3) control the RCHBLK and TCHBLK pins, respectively. The
RCHBLK and TCHCLK pins are user-programmable outputs that can be forced either high or low during
individual channels. These outputs can be used to block clocks to a USART or LAPD controller in
Fractional T1 or ISDN-PRI applications. When the appropriate bits are set to 1, the RCHBLK and
TCHCLK pins will be held high during the entire corresponding channel time. See the timing diagrams in
Section
RCBR1/RCBR2/RCBR3: RECEIVE CHANNEL BLOCKING REGISTERS
(Address = 6C to 6E Hex)
TCBR1/TCBR2/TCBR3: TRANSMIT CHANNEL BLOCKING REGISTERS
(Address = 32 to 34 Hex)
(MSB)
(MSB)
CH16
CH24
CH16
CH24
CH8
CH8
16
SYMBOL
SYMBOL
for an example.
CH24
CH24
CH1
CH1
CH15
CH23
CH15
CH23
CH7
CH7
POSITION
POSITION
CH14
CH22
CH14
CH22
RCBR3.7
RCBR1.0
TCBR3.7
TCBR1.0
CH6
CH6
CH13
CH21
CH13
CH21
CH5
CH5
NAME AND DESCRIPTION
NAME AND DESCRIPTION
Receive Channel Blocking Registers.
0 = force the RCHBLK pin to remain low during this channel
time
1 = force the RCHBLK pin high during this channel time
Transmit Channel Blocking Registers.
0 = force the TCHBLK pin to remain low during this channel
time
1 = force the TCHBLK pin high during this channel time
CH12
CH20
CH12
CH20
CH4
CH4
54 of 97
CH11
CH19
CH11
CH19
CH3
CH3
CH10
CH18
CH10
CH18
CH2
CH2
(LSB)
CH17
CH17
CH1
CH9
CH1
CH9
(LSB)
RCBR1 (6C)
RCBR2 (6D)
RCBR3 (6E)
TCBR1 (32)
TCBR1 (33)
TCBR1 (34)