DS21Q43A データシートの表示（PDF） - Dallas Semiconductor -> Maxim Integrated

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DS21Q43A

Quad E1 Framer

Dallas Semiconductor -> Maxim Integrated 

CONTROL PORT/TEST/SUPPLY PIN LIST Table 1-3

DS21Q43A

PIN SYMBOL TYPE

DESCRIPTION

57

TEST

I 3-State Control for all Output and I/O Pins.

60

CS

I Chip Select.

58

FS0

I Framer Select 0 for Parallel Control Port.

59

FS1

I Framer Select 1 for Parallel Control Port.

61

BTS

I Bus Type Select for Parallel Control Port.

63

WR (R/ W )

I Write Input (Read/Write).

62

RD (DS)

I Read Input (Data Strobe).

23

A0

I Address Bus Bit 0; LSB.

24

A1

I Address Bus Bit 1.

25

A2

I Address Bus Bit 2.

26

A3

I Address Bus Bit 3.

27

A4

I Address Bus Bit 4.

28

A5

I Address Bus Bit 5.

29 A6 or ALE (AS) I Address Bus Bit 6; MSB or Address Latch Enable (Address Strobe).

30

INT

O Receive Alarm Interrupt for all Four Framers.

64

MUX

I Non-Multiplexed or Multiplexed Bus Select.

117 D0 or AD0

I/O Data Bus Bit 0 or Address/Data Bus Bit 0; LSB.

118 D1 or AD1

I/O Data Bus Bit 1 or Address/Data Bus Bit 1.

119 D2 or AD2

I/O Data Bus Bit 2 or Address/Data Bus Bit 2.

120 D3 or AD3

I/O Data Bus Bit 3 or Address/Data Bus Bit 3.

121 D4 or AD4

I/O Data Bus Bit 4 or Address/Data Bus Bit 4.

122 D5 or AD5

I/O Data Bus Bit 5 or Address/Data Bus Bit 5.

123 D6 or AD6

I/O Data Bus Bit 6 or Address/Data Bus Bit 6.

124 D7 or AD7

I/O Data Bus Bit 7 or Address/Data Bus Bit 7; MSB.

15

VDD

- Positive Supply Voltage.

47

VDD

79

VDD

- Positive Supply Voltage.

- Positive Supply Voltage.

111

VDD

14

VSS

- Positive Supply Voltage.

- Signal Ground.

46

VSS

78

VSS

- Signal Ground.

- Signal Ground.

110

VSS

- Signal Ground.

8 of 60

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