参数资料
型号: MSC7112VF1000
厂商: Freescale Semiconductor
文件页数: 22/56页
文件大小: 0K
描述: DSP 16BIT W/DDR CTRLR 400-MAPBGA
标准包装: 90
系列: StarCore
类型: SC1400 内核
接口: 主机接口,I²C,UART
时钟速率: 266MHz
非易失内存: 外部
芯片上RAM: 208kB
电压 - 输入/输出: 3.30V
电压 - 核心: 1.20V
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 400-LFBGA
供应商设备封装: 400-MAPBGA(17x17)
包装: 托盘
MSC7112 Low-Cost 16-bit DSP with DDR Controller Data Sheet, Rev. 11
Freescale Semiconductor
29
Figure 10 and Figure 11 show HDI16 read signal timing. Figure 12 and Figure 13 show HDI16 write signal
timing.
Notes:
1.
THCLK = 2/ (Core Clock). At 200 MHz, THCLK = 10 ns. TCORE = core clock period. At 266 MHz, TCORE = 3.75 ns.
2.
In the timing diagrams below, the controls pins are drawn as active low. The pin polarity is programmable.
3.
VDD = 3.3 V ± 0.15 V; TJ = –40°C to +105 °C, CL = 30 pF for maximum delay timings and CL = 0 pF for minimum delay timings.
4.
The read data strobe is HRD/HRD in the dual data strobe mode and HDS/HDS in the single data strobe mode.
5.
For 64-bit transfers, The “last data register” is the register at address 0x7, which is the last location to be read or written in data
transfers. This is RX0/TX0 in the little endian mode (HBE = 0), or RX3/TX3 in the big endian mode (HBE = 1).
6.
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/HREQ signal.
7.
This timing is applicable only if two consecutive reads from one of these registers are executed.
8.
The write data strobe is HWR in the dual data strobe mode and HDS in the single data strobe mode.
9.
The data strobe is host read (HRD/HRD) or host write (HWR/HWR) in the dual data strobe mode and host data strobe
(HDS/HDS) in the single data strobe mode.
10. The host request is HREQ/HREQ in the single host request mode and HRRQ/HRRQ and HTRQ/HTRQ in the double host
request mode. HRRQ/HRRQ is deasserted only when HOTX fifo is empty, HTRQ/HTRQ is deasserted only if HORX fifo is full
(treat as level Host Request).
11. Compute the value using the expression.
12. For mask set 1M88B, the read and write data strobe minimum deassertion width for non-”last data register” accesses in single
and dual data strobe modes is based on timings 57 and 58.
Figure 10. Read Timing Diagram, Single Data Strobe
Table 22. Host Interface (HDI16) Timing1, 2 (continued)
No.
Characteristics3
Mask Set 1L44X
Mask Set 1M88B
Unit
Expression
Value
Expression
Value
HDS
HA[0–3]
HCS[1–2]
HD[0–15]
50
55
44c
44a
53
52
58
57
51
49
61
56
HREQ (single host request)
HRW
57
58
HRRQ (double host request)
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