DS2149
2. OPERATING MODES
The DS2149 has several pins with multiple functions and names according to the selected operating
mode. These operating modes are summarized in the tables below.
Table 2-A. Operating Modes
PIN
QRSS DISABLED
BIPOLAR
NRZ
QRSS ENABLED
BIPOLAR
NRZ
1
MCLK
2
TCLK
3
TPOS
TDATA
INSLER
4
TNEG
INSBPV
INSBPV
6
RNEG
BPV
RNEG
BPV
7
RPOS
RDATA
RPOS
RDATA
8
RCLK
13
TTIP
16
TRING
19
RTIP
20
RRING
Control pins are affected by serial port and hardware modes.
Table 2-B. Control Pins for Hardware and Software Modes
PIN
HARDWARE MODE
NRZ
QRSS
SERIAL PORT MODE
NRZ
QRSS
5
MODE1
MODE1
9
MODE0
MODE0
11
JASEL
N.C.
12
RCL
RCL/QPD
RCL
RCL/QPD
23
L0
INT
24
L1
SDI
25
L2
SDO
17
L3
N.C.
18
NLOOP
NLOOP
26
RLB
NLB
CS
27
LLB
ALB
SCLK
28
TAIS
QRSS
CLKE
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