PSB21911 데이터 시트보기 (PDF) - Siemens AG

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PSB21911

ISDN Echocancellation Circuit for Terminal Applications IEC-Q TE

Siemens AG 

PSB 21911

PSF 21911

Microprocessor Bus Interface (Overview)

1.6

Microprocessor Bus Interface (Overview)

The table below gives an overview of the different microprocessor bus modes.

Table 1 Microprocessor Bus Interface

Pin number Stand-alone Symbol in processor mode

mode

P-LCC T-QFP

44

64

12 24 PMODE = 0

45 5

PCD0

43 4

PCD1

42 3

PCD2

41 2

PCRD

40 1

PCWR

39 62 PCA0

38 61 PCA1

25 44 GNDd

19 36 INT

24 43 GNDd

36 59 MS2

35 58 MS1

33 55 MS0

20 37 TP1

34 57 MTO

17 32 DOD

3

10 TSP

37 60 DISS

18 35 AUTO

Siemens/

Intel

multiplexed

AD0

AD1

AD2

AD3

AD4

AD5

AD6

AD7

INT

SMODE=0

n.c.

n.c.

n.c.

ALE

RD

WR

CS

Siemens/ Motorola

Serial

Intel

demultiplexed

demultiplexed

PMODE = 1

D0

D0

n.c.

D1

D1

n.c.

D2

D2

n.c.

D3

D3

n.c.

D4

D4

n.c.

D5

D5

n.c.

D6

D6

n.c.

D7

D7

n.c.

INT

INT

INT

A0

A0

SMODE=1

A1

A1

CDIN

A2

A2

CDOUT

A3

A3

n.c.

ALE=0

ALE=1

CCLK

RD

DS

n.c.

WR

R/W

n.c.

CS

CS

CS

MCLK

RST

Semiconductor Group

21

11.97

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