DS21Q42T Maxim Integrated Products, DS21Q42T Datasheet - Page 25

• Manufacturer Part Number: DS21Q42T
• Description: IC FRAMER ENHANCED T1 4X 128TQFP
• Manufacturer: Maxim Integrated Products

Specifications of DS21Q42T

• Controller Type: T1 Framer
• Interface: Parallel/Serial
• Voltage - Supply: 2.97 V ~ 3.63 V
• Current - Supply: 75mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 128-TQFP, 128-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

NOTES:
1) Test Registers 1 and 2 are used only by the factory; these registers must be cleared (set to all zeros) on
2) Register banks AxH, BxH, CxH, DxH, ExH, and FxH are not accessible.
ADDRESS
power– up initialization to insure proper operation.
8A
8D
9A
9D
8B
8C
8E
9B
9C
9E
86
87
88
89
8F
90
91
92
93
94
95
96
97
98
99
9F
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
—
—
—
—
—
—
—
—
—
—
Receive Channel 7
Receive Channel 8
Receive Channel 9
Receive Channel 10
Receive Channel 11
Receive Channel 12
Receive Channel 13
Receive Channel 14
Receive Channel 15
Receive Channel 16
Receive HDLC DS0 Control Register 1
Receive HDLC DS0 Control Register 2
Transmit HDLC DS0 Control Register 1
Transmit HDLC DS0 Control Register 2
Interleave Bus Operation Register
Not used
Test 2
Not used
Not used
Not used
Not used
Not used (set to 00H)
Not used (set to 00H)
Not used (set to 00H)
Not used (set to 00H)
Not used (set to 00H)
REGISTER NAME
25 of 116
ABBREVIATION
TEST2 (set to 00h)
REGISTER
(set to 00H)
(set to 00H)
(set to 00H)
(set to 00H)
(set to 00H)
RDC1
RDC2
TDC1
TDC2
RC10
RC11
RC12
RC13
RC14
RC15
RC16
RC7
RC8
RC9
IBO