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DS31256 Datasheet(PDF) 160 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) 160 Page - Maxim Integrated Products

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DS31256 256-Channel, High-Throughput HDLC Controller
160 of 183
Figure 11-10. 8-Bit Write Cycle
Motorola Mode (LIM = 1)
Arbitration Enabled (LARBE = 1)
Bus Transaction Time = 6 LCLK (LRDY = 0110)
An attempted access by the host causes the local bus to request the bus. If bus access has not been granted
(
LBGACK deasserted), the timing shown at the top of the page occurs, with LBR being asserted. Once LBG is
detected, the local bus grabs the bus for 32 to 1,048,576 clocks and then releases it. If the bus has already been
granted (
LBGACK asserted), the timing shown at the bottom of the page applies.
LCLK
LBR
LBG
LBGACK
32 to 1,048,576 LCLKs
LA[19:0]
LD[7:0]
LD[15:8]
LR/
W
LDS
Address Valid
Data Valid
LBHE
Tri-State
Tri-State
Tri-State
Tri-State
Tri-State
Tri-State
LCLK
12
34
5
6
Note: LA, LD,
LBHE, LDS, and LR/W are tri-stated.



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