收藏本站
参数资料
型号： MC68MH360VR33LR2
厂商： Freescale Semiconductor
文件页数： 143/158页
文件大小： 0K
描述： IC MPU QUICC 33MHZ 357-PBGA
标准包装： 180
系列： M683xx
处理器类型： M683xx 32-位
速度： 33MHz
电压： 5V
安装类型： 表面贴装
封装/外壳： 357-BBGA
供应商设备封装： 357-PBGA（25x25）
包装： 带卷 (TR)
Chapter 5. Buffer Descriptors
If the QMC operates with a full 64 channels, no space is left in the lower 4-Kbyte area. In
this case, the only free areas are in the RAM pages, each 256-bytes large. Depending on the
functions, channels and protocols used, some areas remain free for buffer descriptors. Also,
if a particular function is not enabled, its parameter RAM area may also be used.
If fewer than 64 logical channels are used or if physical channels are concatenated to super
channels, space is freed in the dual-ported RAM. Each unused logical channel creates a 64-
byte hole in the dual-ported RAM. This area is free for buffer descriptors for any SCC.
QMC channels can also use this space instead of external memory for buffer descriptors,
reducing the load on the external bus.
Figure 5-11 shows the internal memory map for the MPC860MH. Figure 5-12 to
Figure 5-15 show a more detailed memory map for each SCC, showing the parameter RAM
usage for different functions.
RAM page one is dedicated to SCC1, I2C, IDMA1 and for miscellaneous storage.
RAM page two is dedicated for SCC2, SPI, IDMA2 and RISC timers
RAM page three is dedicated for SCC3, SMC1 and DSP1 operations.
RAM page four is dedicated for SCC4, SMC2 and DSP2 operations.
Table 5-4 shows the functions available for various protocols on each SCC for the
MPC860MH.
Figure 5-12 to Figure 5-15 show that not all the functions available on each SCC can be
used simultaneously due to overlaps of the register locations stored in the parameter RAM.
Table 5-4. MPC860MH Functions Available
Function
Available?
Transparent
HDLC
UART
Ethernet
QMC
Shared QMC
SCC1
Yes
Misc, I2C,
IDMA1
Misc, I2C,
IDMA1
Misc, I2C,
IDMA1
Misc, IDMA1
No
I2CI2CI2C
SCC2
Yes
SPI, Timer,
IDMA2
SPI, Timer,
IDMA2
SPI, Timer,
IDMA2
Timer, IDMA2 Timer, IDMA2 Timer, IDMA2
No
SPI
SCC3
Yes
SMC1, DSP1
DSP1
No
SMC1
SCC4
Yes
SMC2, DSP2
DSP2
No
SMC2
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.
相关PDF资料
PDF描述
MC68MH360VR25LR2 IC MPU QUICC 25MHZ 357-PBGA
MC68MH360VR25L IC MPU QUICC 25MHZ 357-PBGA
MC68MH360CVR25L IC MPU QUICC 25MHZ 357-PBGA
HMC40DTEI CONN EDGECARD 80POS .100 EYELET
FMC50DRAS-S734 CONN EDGECARD 100PS .100 R/A SLD
相关代理商/技术参数
参数描述
MC68MH360ZP25L 功能描述:IC MPU 32BIT QUICC 357-PBGA RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微处理器 系列:M683xx 标准包装:2 系列:MPC8xx 处理器类型:32-位 MPC8xx PowerQUICC 特点:- 速度:133MHz 电压:3.3V 安装类型:表面贴装 封装/外壳:357-BBGA 供应商设备封装:357-PBGA（25x25） 包装:托盘
MC68MH360ZP25LR2 功能描述:IC MPU QUICC 25MHZ 357-PBGA RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微处理器 系列:M683xx 标准包装:1 系列:MPC85xx 处理器类型:32-位 MPC85xx PowerQUICC III 特点:- 速度:1.2GHz 电压:1.1V 安装类型:表面贴装 封装/外壳:783-BBGA，FCBGA 供应商设备封装:783-FCPBGA（29x29） 包装:托盘
MC68MH360ZP25VL 功能描述:IC MPU QUICC ETHER 25MHZ 357PBGA RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微处理器 系列:M683xx 标准包装:2 系列:MPC8xx 处理器类型:32-位 MPC8xx PowerQUICC 特点:- 速度:133MHz 电压:3.3V 安装类型:表面贴装 封装/外壳:357-BBGA 供应商设备封装:357-PBGA（25x25） 包装:托盘
MC68MH360ZP33K 制造商:Freescale Semiconductor 功能描述:MULTI HDLC QUICC32 - Trays
MC68MH360ZP33L 功能描述:IC MPU 32BIT QUICC 357-PBGA RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微处理器 系列:M683xx 标准包装:2 系列:MPC8xx 处理器类型:32-位 MPC8xx PowerQUICC 特点:- 速度:133MHz 电压:3.3V 安装类型:表面贴装 封装/外壳:357-BBGA 供应商设备封装:357-PBGA（25x25） 包装:托盘
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*