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DS31256 Datasheet(PDF) 43 Page - Maxim Integrated Products

No. de pieza DS31256
Descripción Electrónicos  256-Channel, High-Throughput HDLC Controller
PDF  183 Pages
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Fabricante Electrónico  MAXIM [Maxim Integrated Products]
Página de inicio  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

DS31256 Datasheet(HTML) 43 Page - Maxim Integrated Products

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DS31256 256-Channel, High-Throughput HDLC Controller
43 of 183
Bit 13/Status Bit for Transmit DMA Pending-Queue Read (TPQR)
0 = interrupt masked
1 = interrupt unmasked
Bit 14/Status Bit for Transmit DMA Done-Queue Write (TDQW)
0 = interrupt masked
1 = interrupt unmasked
Bit 15/Status Bit for Transmit DMA Done-Queue Write Error (TDQWE)
0 = interrupt masked
1 = interrupt unmasked
5.4 Test Register Description
Register Name:
TEST
Register Description:
Test Register
Register Address:
0050h
Bit #
7
6
5
4
3
2
1
0
Name
n/a
n/a
n/a
n/a
n/a
n/a
n/a
FT
Default
0
0
0
0
0
0
0
0
Bit #
15
14
13
12
11
10
9
8
Name
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
Default
0
0
0
0
0
0
0
0
Note: Bits that are underlined are read-only; all other bits are read-write.
Bit 0/Factory Test (FT). This bit is used by the factory to place the DS31256 into the test mode. For normal
device operation, this bit should be set to 0 whenever this register is written to. Setting this bit places the RAMs
into a low-power standby mode.
Bit 1 to 15/Device Internal Test Bits. Bits 1 to 15 are for internal (Dallas Semiconductor) test use only, not user
test-mode controls. Values of these bits should always be 0. If any of these bits are set to 1 the device does not
function properly.



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