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Parameter measurement information – Texas Instruments TMS380C26 User Manual

Page 68

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TMS380C26

NETWORK COMMPROCESSOR

SPWS010A–APRIL

1992–REVISED MARCH 1993

68

POST

OFFICE BOX 1443 HOUST

ON,

TEXAS

77001

PARAMETER MEASUREMENT INFORMATION

SOWN

(see Note A)

SDDIR

SADH0–SADH7,

SADL0–SADL7,

SPH, SPL

SBHE

SRD, SWR

SHRQ

SIF Outputs:

SBBSY,

SHLDA

SBCLK

SIF Inputs:

SIF Master

Bus Exchange

User Master

T1

TX

I2

I1

(T4)

Read

Write

Address Valid

212

212

241a

241

208b

208a

230

224c

224a

NOTE A: While the system interface DMA controls are active (i.e., SOWN is asserted), the SCS input is disabled.

Figure 32. 80x8x Mode Bus Arbitration Timing, SIF Takes Control