參數(shù)資料
型號: XC56L307VF160
廠商: Freescale Semiconductor
文件頁數(shù): 52/104頁
文件大?。?/td> 0K
描述: IC DSP 24BIT FIXED POINT 196-BGA
標準包裝: 126
系列: DSP563xx
類型: 定點
接口: 主機接口,SSI,SCI
時鐘速率: 160MHz
非易失內(nèi)存: ROM(576 B)
芯片上RAM: 576kB
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 1.80V
安裝類型: 表面貼裝
封裝/外殼: 196-LBGA
供應商設備封裝: 196-MAPBGA(15x15)
包裝: 托盤
AC Electrical Characteristics
DSP56L307 Technical Data, Rev. 6
Freescale Semiconductor
2-31
338
Delay from read data strobe deassertion to host request
assertion for “Last Data Register” read5, 7, 8
100 MHz: TC + 5.3
160 MHz: TC + 3.3
15.3
9.6
ns
339
Delay from write data strobe deassertion to host request
assertion for “Last Data Register” write
6, 7, 8
100 MHz: 1.5
× TC + 5.3
160 MHz: 1.5
× TC + 3.3
20.3
12.7
ns
340
Delay from data strobe assertion to host request deassertion for
“Last Data Register” read or write (HROD=0)4, 7, 8
16.8
12.2
ns
341
Delay from data strobe assertion to host request deassertion for
“Last Data Register” read or write (HROD=1, open drain host
request)4, 7, 8, 9
300.0
300.0
ns
Notes:
1.
See the Programmer’s Model section in the chapter on the HI08 in the
DSP56L307 User’s Manual.
2.
In the timing diagrams below, the controls pins are drawn as active low. The pin polarity is programmable.
3.
This timing is applicable only if two consecutive reads from one of these registers are executed.
4.
The data strobe is Host Read (HRD) or Host Write (HWR) in the Dual Data Strobe mode and Host Data Strobe (HDS) in the
Single Data Strobe mode.
5.
The read data strobe is HRD in the Dual Data Strobe mode and HDS in the Single Data Strobe mode.
6.
The write data strobe is HWR in the Dual Data Strobe mode and HDS in the Single Data Strobe mode.
7.
The host request is HREQ in the Single Host Request mode and HRRQ and HTRQ in the Double Host Request mode.
8.
The “Last Data Register” is the register at address $7, which is the last location to be read or written in data transfers. This is
RXL/TXL in the Big Endian mode (HLEND = 0; HLEND is the Interface Control Register bit 7—ICR[7]), or RXH/TXH in the
Little Endian mode (HLEND = 1).
9.
In this calculation, the host request signal is pulled up by a 4.7 k
resistor in the Open-drain mode.
10. VCCQH = 3.3 V ± 0.3 V, VCC = 1.8 V ± 0.1 V; TJ = –40°C to +100 °C, CL = 50 pF
11. This timing is applicable only if a read from the “Last Data Register” is followed by a read from the RXL, RXM, or RXH registers
without first polling RXDF or HREQ bits, or waiting for the assertion of the HREQ signal.
12. After the external host writes a new value to the ICR, the HI08 is ready for operation after three DSP clock cycles (3
× Tc).
Figure 2-22.
Host Interrupt Vector Register (IVR) Read Timing Diagram
Table 2-17.
Host Interface Timings1,2,12 (Continued)
No.
Characteristic10
Expression
100 MHz
160 MHz
Unit
Min
Max
Min
Max
HACK
H[0–7]
HREQ
329
317
318
328
326
327
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