TMC2074-NU データシートの表示（PDF） - SMSC -> Microchip

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TMC2074-NU

Dual Mode CircLink™ Controller

SMSC -> Microchip 

Dual Mode CircLink™ Controller

Datasheet

1.6

Setup Pins

Setup pins are strapped high or low to configure options according to system design. For low, strap to

ground. Many pins have internal pullups on their input buffers. These pins can be left unconnected to keep

them in high state.

1.6.1 CPU Type Selection

(nRWM/SCM[1]: Pin)

ƒ Peripheral mode: This pin selects the CPU type; in this case, the definition of nWR/DIR (pin) and

nRD/nDS (pin) are selected (refer to Figure 3 - Motorola CPU Mode (68hxx).

ƒ Standalone mode: This pin is the clock –master-ID-specification input SCM[1].

[nRWM=H, nDSINV=H]

Read Cycle

Write Cycle

DIR

nDS

Figure 3- Motorola CPU Mode (68hxx)

[nRWM=L, nDSINV=L or H]

Read Cycle

Write Cycle

nWR

nRD

Figure 4 - Intel CPU Mode (86xx)

Revision 0.1 (03-29-06)

Page 16

DATASHEET

SMSC TMC2074

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