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DS21Q55

3.8 Pinout

DS21Q55 PIN DESCRIPTION Table 5-1

NOTE: Signal is common to all transceivers unless otherwise stated

PIN

SYMBOL

TYPE

DESCRIPTION

 

 

U3

A0

I

Address Bus Bit 0 (lsb).

 

 

L17

A1

I

Address Bus Bit 1.

 

 

V2

A2

I

Address Bus Bit 2.

 

 

T4

A3

I

Address Bus Bit 3.

 

 

V8

A4

I

Address Bus Bit 4.

 

 

H4

A5

I

Address Bus Bit 5.

 

 

U8

A6

I

Address Bus Bit 6.

 

 

P4

A7/ALE(AS)

I

Address Bus Bit 7 (msb) / Address Latch Enable.

 

 

M1

BPCLK1

O

Back Plane Clock, Transceiver # 1.

 

 

H17

BPCLK2

O

Back Plane Clock, Transceiver # 2.

 

 

F4

BPCLK3

O

Back Plane Clock, Transceiver # 3.

 

 

V13

BPCLK4

O

Back Plane Clock, Transceiver # 4.

 

 

P2

BTS

I

Bus Type Select (0 = Intel / 1 = Motorola),

 

 

P3

CS1*

I

Chip Select, Transceiver # 1.

 

 

A14

CS2*

I

Chip Select, Transceiver # 2.

 

 

B5

CS3*

I

Chip Select, Transceiver # 3.

 

 

K17

CS4*

I

Chip Select, Transceiver # 4.

 

 

U11

D0/AD0

I/O

Data Bus Bit 0/ Address/Data Bus Bit 0 (lsb).

 

 

J19

D1/AD1

I/O

Data Bus Bit 1/ Address/Data Bus Bit 1.

 

 

W15

D2/AD2

I/O

Data Bus Bit 2/Address/Data Bus Bit 2.

 

 

U7

D3/AD3

I/O

Data Bus Bit 3/Address/Data Bus Bit 3.

 

 

U9

D4/AD4

I/O

Data Bus Bit 4/Address/Data Bus Bit 4.

 

 

U5

D5/AD5

I/O

Data Bus Bit 5/Address/Data Bus Bit 5.

 

 

V4

D6/AD6

I/O

Data Bus Bit 6/Address/Data Bus Bit 6.

 

 

U4

D7/AD7

I/O

Data Bus Bit 7/Address/Data Bus Bit 7 (msb).

 

 

J3

DVDD1

Digital Positive Supply.

 

 

N4

DVDD1

Digital Positive Supply.

 

 

U2

DVDD1

Digital Positive Supply.

 

 

V5

DVDD1

Digital Positive Supply.

 

 

B12

DVDD2

Digital Positive Supply.

 

 

C12

DVDD2

Digital Positive Supply.

 

 

C16

DVDD2

Digital Positive Supply.

 

 

D18

DVDD2

Digital Positive Supply.

 

 

A9

DVDD3

Digital Positive Supply.

 

 

B3

DVDD3

Digital Positive Supply.

 

 

B6

DVDD3

Digital Positive Supply.

 

 

C4

DVDD3

Digital Positive Supply.

 

 

G20

DVDD4

Digital Positive Supply.

 

 

M17

DVDD4

Digital Positive Supply.

 

 

M20

DVDD4

Digital Positive Supply.

 

 

P18

DVDD4

Digital Positive Supply.

 

 

H3

DVSS1

Digital Signal Ground.

 

 

U6

DVSS1

Digital Signal Ground.

 

 

W8

DVSS1

Digital Signal Ground.

 

 

A17

DVSS2

Digital Signal Ground.

 

 

 

 

 

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Please contact telecom.support@dalsemi.com or search http://www.maxim-ic.com for updated

information.

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Maxim specifications Pinout DS21Q55 PIN Description Table, PIN Symbol Type Description