DS21448L+ Maxim Integrated Products, DS21448L+ Datasheet - Page 7

• Manufacturer Part Number: DS21448L+
• Description: IC LIU QUAD E1/T1/J1 128-LQFP
• Manufacturer: Maxim Integrated Products
• Type: Line Interface Units (LIUs)r

Specifications of DS21448L+

• Number Of Drivers/receivers: 4/4
• Protocol: T1/E1/J1
• Voltage - Supply: 3.135 V ~ 3.465 V
• Mounting Type: Surface Mount
• Package / Case: 128-TQFP, 128-VQFP
• Product: Framer
• Number Of Transceivers: 4
• Supply Voltage (max): 3.465 V
• Supply Voltage (min): 3.135 V
• Supply Current (max): 400 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2. PIN DESCRIPTION
The DS21448 can be controlled in parallel port mode, serial port mode, or hardware mode. The bus interface select
bits 0 and 1 (BIS0, BIS1) determine the device mode and pin assignments
Table 2-A. Bus Interface Selection
Table 2-B. Pin Assignments
BIS1
BGA
0
0
1
1
D10
H11
H12
G12
H10
G11
K10
E10
A10
J10
M4
G3
D3
H1
K2
K3
K1
E3
D4
F3
D5
E4
D8
F4
D9
H9
K9
K5
K8
D7
F9
K7
A1
A4
A7
B2
B5
J3
J2
J1
L1
J9
L5
J8
L6
J7
—
PIN
BIS0
0
1
0
1
115–117
118–120
LQFP
19–21
49–51
85–87
22–24
52–54
88–90
114
110
111
121
123
126
128
124
125
18
57
84
91
92
95
35
36
62
63
64
65
66
75
76
77
78
79
80
81
82
97
98
28
60
93
29
3
1
2
Parallel Port Mode (nonmultiplexed)
Parallel Port Mode (multiplexed)
BUS INTERFACE TYPE
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
—
—
—
—
—
—
—
—
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Serial Port Mode
Hardware Mode
PARALLEL PORT MODE
RCL1/LOTC1
RCL2/LOTC2
RCL3/LOTC3
RCL4/LOTC4
TXDIS/TEST
WR (R/W)
ALE (AS)
RRING1
RRING2
RD (DS)
D7/AD7
D6/AD6
D5/AD5
D4/AD4
D3/AD3
D2/AD2
D1/AD1
D0/AD0
PBEO1
PBEO2
PBEO3
PBEO4
RTIP1
RTIP2
RTIP3
RTIP4
VDD1
VDD2
VDD3
VDD4
VSS1
VSS2
VSS3
VSS4
VSM
CS1
CS2
CS3
CS4
N/A
N/A
INT
A4
A3
A2
A1
A0
7 of 60
DS21448 3.3V T1/E1/J1 Quad Line Interface
SERIAL PORT MODE
RCL1/LOTC1
RCL2/LOTC2
RCL3/LOTC3
RCL4/LOTC4
TXDIS/TEST
(Table
RRING1
RRING2
PBEO1
PBEO2
PBEO3
PBEO4
OCES
RTIP1
RTIP2
RTIP3
RTIP4
SCLK
VDD1
VDD2
VDD3
VDD4
VSS1
VSS2
VSS3
VSS4
ICES
SDO
VSM
CS1
CS2
CS3
CS4
N/A
N/A
N/A
SDI
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
INT
2-A).
HARDWARE MODE
TXDIS/TEST
RRING1
RRING2
JAMUX
LOOP0
LOOP1
PBEO1
PBEO2
PBEO3
PBEO4
SCLKE
RTIP1
RTIP2
RTIP3
RTIP4
NRZE
VDD1
VDD2
VDD3
VDD4
EGL1
EGL2
EGL3
EGL4
VSS1
VSS2
VSS3
VSS4
RCL1
RCL2
RCL3
RCL4
MM0
MM1
VSM
ETS
HBE
CES
TPD
DJA
JAS
TX0
TX1
RT1
L2
L1
L0