DS2148 Dallas Semiconducotr, DS2148 Datasheet - Page 9

• Manufacturer Part Number: DS2148
• Description: 5V E1/T1/J1 Line Interface
• Manufacturer: Dallas Semiconducotr

TRANSMIT LOGIC Figure 3-3
4. PIN DESCRIPTION
The DS2148 can be controlled in a parallel port mode, a serial port mode, or a hardware mode (Table 4-1,
4-2, and 4-3). The parallel and serial port modes are described in Section 3, and the hardware mode is
described below.
BUS INTERFACE SELECTION Table 4-1
To
Remote
Loopback
BIS1
0
0
0
0
1
1
CCR3.1
BPV
Insert
Routed to
All Blocks
CCR1.6
OR
Gate
mux
BIS0
1
0
0
0
1
1
0
1
CCR1.1
mux
0
1
CCR2.2
B8ZS/
HDB3
Coder
RCLK
CCR1.2
OR
Gate
mux
PBTS
CCR1.0
AND
Gate
0
1
0
1
-
-
0
1
CCR3.0
Logic
Error
Insert
9 of 75
To LOTC Output Pin
Muxed Intel
Muxed Motorola
Nonmuxed Intel
Nonmuxed Motorola
Serial Port
Hardware
CCR3.3
BUS INTERFACE TYPE
mux
CCR3.4
Loss Of Transmit
Clock Detect
JACLK
(derived
from
MCLK)
Loop Code Generator
SR.5
PRBS Generator
OR
Gate
Clock
Invert
CCR2.1
tx bd
TPOS
TNEG
TCLK