ADSP-21991BST Analog Devices Inc, ADSP-21991BST Datasheet - Page 16

• Manufacturer Part Number: ADSP-21991BST
• Description: IC DSP CONTROLLER 16BIT 176LQFP
• Manufacturer: Analog Devices Inc
• Series: ADSP-21xxr
• Type: Fixed Pointr

Specifications of ADSP-21991BST

• Rohs Status: RoHS non-compliant
• Interface: SPI, SSP
• Clock Rate: 160MHz
• Non-volatile Memory: External
• On-chip Ram: 112kB
• Voltage - I/o: 3.30V
• Voltage - Core: 2.50V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 176-LQFP

ADSP-21991
Table 4. Pin Descriptions (Continued)
Pin
PF12
PF11
PF10
PF9
PF8
PF7/SPISEL7
PF6/SPISEL6
PF5/SPISEL5
PF4/SPISEL4
PF3/SPISEL3
PF2/SPISEL2
PF1/SPISEL1
PF0/SPISS
SCK
MISO
MOSI
DT
DR
RFS
TFS
TCLK
RCLK
EIA
EIB
EIZ
EIS
AUX0
AUX1
AUXTRIP
TMR2
TMR1
TMR0
AH
AL
BH
BL
CH
CL
PWMSYNC
PWMPOL
PWMTRIP
PWMSR
AVDD (2 pins)
AVSS (2 pins)
VDDINT (6 pins)
VDDEXT (10 pins)
GND (16 pins)
Type
D, BT, PD
D, BT, PD
D, BT, PD
D, BT, PD
D, BT, PD
D, BT, PD
D, BT, PD
D, BT, PD
D, BT, PD
D, BT, PD
D, BT, PD
D, BT, PD
D, BT, PD
D, BT
D, BT
D, BT
D, OT
D, I
D, BT
D, BT
D, BT
D, BT
D, I
D, I
D, I
D, I
D, O
D, O
D, I, PD
D, BT
D, BT
D, BT
D, O
D, O
D, O
D, O
D, O
D, O
D, BT
D, I, PU
D, I, PD
D, I, PU
A, P
A, G
D, P
D, P
D, G
–16–
General-Purpose IO12
General-Purpose IO11
General-Purpose IO10
General-Purpose IO9
General-Purpose IO8
General-Purpose IO7/SPI Slave Select Output 7
General-Purpose IO6/SPI Slave Select Output 6
General-Purpose IO5/SPI Slave Select Output 5
General-Purpose IO4/SPI Slave Select Output 4
General-Purpose IO3/SPI Slave Select Output 3
General-Purpose IO2/SPI Slave Select Output 2
General-Purpose IO1/SPI Slave Select Output 1
SPI Master In Slave Out Data
SPORT Transmit Clock
SPORT Receive Clock
Encoder B Channel Input
Encoder S Channel Input
Timer 0 Input/Output Pin
Timer 1 Input/Output Pin
Timer 2 Input/Output Pin
PWM Synchronization
PWM Polarity
Digital Internal Supply
Function
General-Purpose IO0/SPI Slave Select Input 0
SPI Clock
SPI Master Out Slave In Data
SPORT Data Transmit
SPORT Data Receive
SPORT Receive Frame Sync
SPORT Transmit Frame Sync
Encoder A Channel Input
Encoder Z Channel Input
Auxiliary PWM Channel 0 Output
Auxiliary PWM Channel 1 Output
Auxiliary PWM Shutdown Pin
PWM Channel A HI PWM
PWM Channel A LO PWM
PWM Channel B HI PWM
PWM Channel B LO PWM
PWM Channel C HI PWM
PWM Channel C LO PWM
PWM Trip
PWM SR Mode Select
Analog Supply Voltage
Analog Ground
Digital External Supply
Digital Ground
REV. 0