BT8375 CONEXANT [Conexant Systems, Inc], BT8375 Datasheet - Page 228
BT8375
Manufacturer Part Number
BT8375
Description
single chip transceivers for T1/E1 and Integrated Service Digital Network (ISDN) primary rate interfaces
Manufacturer
CONEXANT [Conexant Systems, Inc]
Datasheet
1.BT8375.pdf
(323 pages)
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3.16 Data Link Registers
Data link test registers [addr 0BA-0BE] are for CONEXANT production test. Set to 0 for normal operation.
DL_TEST1[3]
DL_TEST1[2]
DL_TEST1[1, 0]
DL_TEST2[5:0]
DL_TEST3[5:0]
DL_TEST4[6]
DL_TEST4[5]
DL_TEST4[4]
DL_TEST4[3]
DL_TEST4[2]
DL_TEST4[1]
DL_TEST4[0]
3-110
0BA—DLINK Test Configuration (DL_TEST1)
0BB—DLINK Test Status (DL_TEST2)
0BC—DLINK Test Status (DL_TEST3)
0BD—DLINK Test Control #1 or Configuration #2 (DL_TEST4)
—
—
—
—
7
7
7
7
DL_TEST4[6]
Clock Test—Zero for normal operation, where clocks are controlled by DL1_CTL and
DL2_CTL [addr 0A6, 0B1]. When active-high, clocks are enabled.
Shadow Select—Report shadow pointers instead of normal read/write pointers.
FIFO Select: 00 = RDL1; 01 = RDL2; 10 = TDL1; 11 = TDL2
Read or Shadow Read Pointer—Reports selected FIFO read pointer current address.
Write or Shadow Write Pointer—Specifies selected FIFO write pointer address.
TFIFO1 Read Clear—Force transmit FIFO read pointer to empty.
TFIFO1 Write Clear—Force transmit FIFO write pointer to empty.
TFIFO1 Write—MPU data goes to specified write pointer address.
RFIFO1 Read Clear—Force receive FIFO read pointer to empty state (flush).
RFIFO1 Write Clear—Force receive FIFO write pointer to empty state (flush).
RFIFO1 Write—MPU data goes to specified write pointer address.
RFIFO1 Bypass—Pipe receive data.
—
—
—
6
6
6
6
DL_TEST2[5]
DL_TEST3[5]
DL_TEST4[5]
—
5
5
5
5
DL_TEST2[4]
DL_TEST3[4]
DL_TEST4[4]
—
4
4
4
4
Conexant
DL_TEST1[3]
DL_TEST2[3]
DL_TEST3[3]
DL_TEST4[3]
3
3
3
3
Fully Integrated T1/E1 Framer and Line Interface
DL_TEST1[2]
DL_TEST2[2]
DL_TEST3[2]
DL_TEST4[2]
2
2
2
2
DL_TEST1[1]
DL_TEST2[1]
DL_TEST3[1]
DL_TEST4[1]
Bt8370/8375/8376
1
1
1
1
DL_TEST1[0]
DL_TEST2[0]
DL_TEST3[0]
DL_TEST4[0]
N8370DSE
0
0
0
0
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