DS2182AQ View Datasheet(PDF) - Dallas Semiconductor -> Maxim Integrated
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Description
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DS2182AQ Datasheet PDF : 26 Pages
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Table 2. POWER AND TEST PIN DESCRIPTION
PIN SYMBOL TYPE
FUNCTION
14
VSS
20
TEST
28
VDD
— Signal Ground. 0V
I
Test Mode. Connect to VSS for normal operation.
— Positive Supply. 5.0V
DS2182A
Table 3. REGISTER SUMMARY
REGISTER
BVCR2
BVCR1
CRCCR
OOFCR
FECR
ADDRESS
0000
0001
0010
0011
0100
FUNCTION
Bipolar Violation Count Register 2. LSW of a 16-bit presettable
counter that records individual bipolar violations.
Bipolar Violation Count Register 1. MSW of a 16-bit presettable
counter that records individual bipolar violations.
CRC Error Count Register. 8-bit presettable counter that records
CRC6 errored words in the 193E frame mode.
OOF Count Register. 8-bit presettable counter that records OOF
events. OOF events are defined by RCR1.5 and RCR1.6.
Frame Error Count Register. 8-bit presettable counter that records
individual bit errors in the framing pattern.
RSR1
0101
Receive Status Register 1. Reports alarm conditions.
RIMR1
0110
Receive Interrupt Mask Register 1. Allows masking of individual
alarm-generated interrupts from RSR1.
RSR2
0111
Receive Status Register 2. Reports alarm conditions.
RIMR2
RCR1
RCR2
1000
1001
1010
Receive Interrupt Mask Register 2. Allows masking of individual
alarm-generated interrupts from RSR2.
Receive Control Register 1. Programs device operating
characteristics.
Receive Control Register 2. Programs device operating
characteristics.
SERIAL PORT INTERFACE
The port pins of the DS2182A serve as a microprocessor/microcontroller-compatible serial port. Eleven
on-board registers allow the user to update operational characteristics and monitor device status through a
host controller, minimizing hardware interfaces. The port on the DS2182A can be read from or written to
at any time. Serial port reads and writes are independent of T1 line timing signals RCLK, RPOS, and
RNEG. However, RCLK is needed in order to clear RSR1 and RSR2 after reads.
ADDRESS/COMMAND
Reading or writing the control, configuration, or status registers requires writing one address/command
byte prior to transferring register data. The first bit written (LSB) of the address/command word specifies
register read or write. The following 4 bits identify the register address. The next 2 bits are reserved and
must be set to 0 for proper operation. The last bit of the address/ command word enables burst mode
when set; the burst mode causes all registers to be consecutively read or written to. Data is read and
written to the DS2182A LSB first.
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