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參數(shù)資料
| 型號(hào)： | ADSP-21469KBCZ-4 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 7/72頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DSP 32/40BIT 450MHZ 324BGA |
| 產(chǎn)品變化通告： | Pin Function Change 08/Mar/2012 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | SHARC® |
| 類型： | 浮點(diǎn) |
| 接口： | DAI，DPI，EBI/EMI，I²C，SCI，SPI，SSP，UART/USART |
| 時(shí)鐘速率： | 450MHz |
| 非易失內(nèi)存： | 外部 |
| 芯片上RAM： | 5Mb |
| 電壓 - 輸入/輸出： | 3.30V |
| 電壓 - 核心： | 1.10V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 324-BGA，CSPBGA |
| 供應(yīng)商設(shè)備封裝： | 324-CSPBGA |
| 包裝： | 托盤 |
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ADSP-21469
Rev. 0
|
Page 15 of 72
|
June 2010
TDI
I (ipu)
Test Data Input (JTAG). Provides serial data for the boundary scan logic.
TDO
O /T
High-Z
Test Data Output (JTAG). Serial scan output of the boundary scan path.
TMS
I (ipu)
Test Mode Select (JTAG). Used to control the test state machine.
TCK
I
Test Clock (JTAG). Provides a clock for JTAG boundary scan. TCK must be asserted
(pulsed low) after power-up or held low for proper operation of the device.
TRST
I (ipu)
Test Reset (JTAG). Resets the test state machine. TRST must be asserted (pulsed low)
after power-up or held low for proper operation of the processor.
EMU
O/T (ipu)
High-Z
Emulation Status. Must be connected to the
ADSP-21469 Analog Devices DSP Tools
product line of JTAG emulators target board connector only.
CLK_CFG1–0
I
Core to CLKIN Ratio Control. These pins set the start up clock frequency. Note that
the operating frequency can be changed by programming the PLL multiplier and
divider in the PMCTL register at any time after the core comes out of reset. The
allowed values are:
00 = 6:1
01 = 32:1
10 = 16:1
11 = reserved
CLKIN
I
Local Clock In. Used in conjunction with XTAL. CLKIN is the clock input. It configures
the processors to use either its internal clock generator or an external clock source.
Connecting the necessary components to CLKIN and XTAL enables the internal clock
generator. Connecting the external clock to CLKIN while leaving XTAL unconnected
configures the processors to use the external clock source such as an external clock
oscillator. CLKIN may not be halted, changed, or operated below the specified
frequency.
XTAL
O
Crystal Oscillator Terminal. Used in conjunction with CLKIN to drive an external
crystal.
RESET
I
Processor Reset. Resets the processor to a known state. Upon deassertion, there is
a 4096 CLKIN cycle latency for the PLL to lock. After this time, the core begins program
execution from the hardware reset vector address. The RESET input must be asserted
(low) at power-up.
RESETOUT/
RUNRSTIN
I/O (ipu)
Reset Out/Running Reset In. The default setting on this pin is reset out. This pin also
has a second function as RUNRSTIN which is enabled by setting bit 0 of the
RUNRSTCTL register. For more information, see the ADSP-214xx SHARC Processor
Hardware Reference.
BOOT_CFG2–0
I
Boot Configuration Select. These pins select the boot mode for the processor. The
BOOT_CFG pins must be valid before RESET (hardware and software) is de-asserted.
1 The MLB pins are only available on automotive models of the ADSP-21469 processors. These pins are NC (no connect) on the standard models. For more information, see
CSP_BGA Ball Assignment—Automotive Models on Page 63, and CSP_BGA Ball Assignment—Standard Models on Page 66.
Table 9. Pin Descriptions (Continued)
Name
Type
State During/
After Reset
Description
The following symbols appear in the Type column of Table 9: A = asynchronous, I = input, O = output, S = synchronous, A/D = active drive,
O/D = open-drain, and T = three-state, ipd = internal pull-down resistor, ipu = internal pull-up resistor.
The internal pull-up (ipu) and internal pull-down (ipd) resistors are designed to hold the internal path from the pins at the expected logic levels.
To pull-up or pull-down the external pads to the expected logic levels, use external resistors. Internal pull-up/pull-down resistors cannot be
enabled/disabled and the value of these resistors cannot be programmed. The range of an ipu resistor can be between 26 k
–63 k. The range
of an ipd resistor can be between 31 k
–85 k.
In this table, the DDR2 pins are SSTL18 compliant. All other pins are LVTTL compliant.
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