ADSP-21990BBC datasheet(17/50 Pages) AD

17 / 50 page

ADSP-21990

Rev. A

Page 17 of 50

August 2007

VIN7

A, I

ADC Input 7

ASHAN

A, I

Inverting SHA_A Input

BSHAN

A, I

Inverting SHA_B Input

CAPT

A, O

Noise Reduction Pin

CAPB

A, O

Noise Reduction Pin

VREF

A, I, O

Voltage Reference Pin (Mode Selected by State of SENSE)

SENSE

A, I

Voltage Reference Select Pin

CML

A, O

Common-Mode Level Pin

CONVST

D, I

ADC Convert Start Input

PF15

D, BT, PD

General-Purpose IO15

PF14

D, BT, PD

General-Purpose IO14

PF13

D, BT, PD

General-Purpose IO13

PF12

D, BT, PD

General-Purpose IO12

PF11

D, BT, PD

General-Purpose IO11

PF10

D, BT, PD

General-Purpose IO10

PF9

D, BT, PD

General-Purpose IO9

PF8

D, BT, PD

General-Purpose IO8

PF7/SPISEL7

D, BT, PD

General-Purpose IO7/SPI Slave Select Output 7

PF6/SPISEL6

D, BT, PD

General-Purpose IO6/SPI Slave Select Output 6

PF5/SPISEL5

D, BT, PD

General-Purpose IO5/SPI Slave Select Output 5

PF4/SPISEL4

D, BT, PD

General-Purpose IO4/SPI Slave Select Output 4

PF3/SPISEL3

D, BT, PD

General-Purpose IO3/SPI Slave Select Output 3

PF2/SPISEL2

D, BT, PD

General-Purpose IO2/SPI Slave Select Output 2

PF1/SPISEL1

D, BT, PD

General-Purpose IO1/SPI Slave Select Output 1

PF0/SPISS

D, BT, PD

General-Purpose IO0/SPI Slave Select Input 0

SCK

D, BT

SPI Clock

MISO

D, BT

SPI Master In Slave Out Data

MOSI

D, BT

SPI Master Out Slave In Data

D, OT

SPORT Data Transmit

D, I

SPORT Data Receive

RFS

D, BT

SPORT Receive Frame Sync

TFS

D, BT

SPORT Transmit Frame Sync

TCLK

D, BT

SPORT Transmit Clock

RCLK

D, BT

SPORT Receive Clock

EIA

D, I

Encoder A Channel Input

EIB

D, I

Encoder B Channel Input

EIZ

D, I

Encoder Z Channel Input

EIS

D, I

Encoder S Channel Input

AUX0

D, O

Auxiliary PWM Channel 0 Output

AUX1

D, O

Auxiliary PWM Channel 1 Output

AUXTRIP

D, I, PD

Auxiliary PWM Shutdown Pin

TMR2

D, BT

Timer 0 Input/Output Pin

TMR1

D, BT

Timer 1 Input/Output Pin

TMR0

D, BT

Timer 2 Input/Output Pin

D, O

PWM Channel A HI PWM

D, O

PWM Channel A LO PWM

Table 4. Pin Descriptions (Continued)

Name

Type

Function

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