參數(shù)資料
型號(hào): ADSP-21991BSTZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 7/44頁(yè)
文件大?。?/td> 0K
描述: IC DSP CONTROLLER 16BIT 176-LQFP
產(chǎn)品變化通告: Product Discontinuance 27/Oct/2011
標(biāo)準(zhǔn)包裝: 1
系列: ADSP-21xx
類(lèi)型: 定點(diǎn)
接口: SPI,SSP
時(shí)鐘速率: 160MHz
非易失內(nèi)存: 外部
芯片上RAM: 112kB
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 2.50V
工作溫度: -40°C ~ 85°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 176-LQFP
供應(yīng)商設(shè)備封裝: 176-LQFP(24x24)
包裝: 托盤(pán)
–15–
REV. 0
ADSP-21991
pins have a logic level hold circuit that prevents input from
floating internally.
PWMTRIP has an internal pull-down, but
should not be left floating to avoid unnecessary PWM shutdowns.
The following symbols appear in the Type column of Table 4:
G = Ground, I = Input, O = Output, P = Power Supply,
B = Bidirectional, T = Three-State, D = Digital, A = Analog,
CKG = Clock Generation pin, PU = Internal Pull-up, and
PD = Internal Pull-Down.
Table 4. Pin Descriptions
Pin
Type
Function
A19–0
D, OT
External Port Address Bus
D15–0
D, BT
External Port Data Bus
RD
D, OT
External Port Read Strobe
WR
D, OT
External Port Write Strobe
ACK
D, I
External Port Access Ready Acknowledge
BR
D, I, PU
External Port Bus Request
BG
D, O
External Port Bus Grant
BGH
D, O
External Port Bus Grant Hang
MS0
D, OT
External Port Memory Select Strobe 0
MS1
D, OT
External Port Memory Select Strobe 1
MS2
D, OT
External Port Memory Select Strobe 2
MS3
D, OT
External Port Memory Select Strobe 3
IOMS
D, OT
External Port IO Space Select Strobe
BMS
D, OT
External Port Boot Memory Select Strobe
CLKIN
D, I, CKG
Clock Input/Oscillator Input/Crystal Connection 0
XTAL
D, O, CKG
Oscillator Output/Crystal Connection 1
CLKOUT
D, O
Clock Output (HCLK)
BYPASS
D, I, PU
PLL Bypass Mode Select
RESET
D, I, PU
Processor Reset Input
POR
D, O
Power on Reset Output
BMODE2
D, I, PU
Boot Mode Select Input 2
BMODE1
D, I, PD
Boot Mode Select Input 1
BMODE0
D, I, PU
Boot Mode Select Input 0
TCK
D, I
JTAG Test Clock
TMS
D, I, PU
JTAG Test Mode Select
TDI
D, I, PU
JTAG Test Data Input
TDO
D, OT
JTAG Test Data Output
TRST
D, I, PU
JTAG Test Reset Input
EMU
D, OT, PU
Emulation Status
VIN0
A, I
ADC Input 0
VIN1
A, I
ADC Input 1
VIN2
A, I
ADC Input 2
VIN3
A, I
ADC Input 3
VIN4
A, I
ADC Input 4
VIN5
A, I
ADC Input 5
VIN6
A, I
ADC Input 6
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
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