參數(shù)資料
型號(hào)： MC68MH360ZQ33LR2
廠商： Freescale Semiconductor
文件頁數(shù)： 38/158頁
文件大小： 0K
描述： IC MPU QUICC 33MHZ 357-PBGA
標(biāo)準(zhǔn)包裝： 180
系列： M683xx
處理器類型： M683xx 32-位
速度： 33MHz
電壓： 5V
安裝類型： 表面貼裝
封裝/外殼： 357-BBGA
供應(yīng)商設(shè)備封裝： 357-PBGA（25x25）
包裝： 帶卷 (TR)
QMC Supplement
Therefore, a 50-MHz MPC860MH will be needed to run 64 channels of HDLC on
one device.
B.2 860MH-Related Questions
Q: Is Ethernet only available on SCC1 for both 860EN and 860MH?
A: Ethernet is available on any channel. We recommend it on SCC1 due to its larger
FIFO.
Q: How is 64-channel QMC implemented on the 50-MHz 860MH? What is the serial
speed of the TDM channels?
A: Use two SCCs running 32-channel QMC protocol. Each channel is assumed to be
64-Kbps, like a normal time slot on a T1/E1 line, giving an aggregate rate of 4 Mbps
(that is, twice the E1 rate).
Q: Does running transparent-mode processing on the QMC channels decrease the load
on the CPM?
A: CPM loading in transparent mode is not signicantly different from the loading in
HDLC mode; therefore, performance will be the same.
Q: How many channelized T1/E1 ports does the 860MH support? (where E1 is thirty-
two 64-Kbps channels and T1 is 24 channels)
A: With respect to running multiple channels of HDLC, the major limitation of the
current 860MH is clock frequency. A 25-MHz part can run only 32 HDLC channels,
while a 50-MHz part can run 64 channels. At this point, however, the size of the
dual-ported RAM limits the number of HDLC channels to 64.
The MPC860 also has just two time slot assigners. Therefore, it can directly
terminate at most two T1s or E1s.
Q: How is the 860MH congured to support more than 32 channels.
A: The QMC protocol for the 860MH can be used to support more than 32 HDLC
channels in three ways:
In one method, use shared transmit/receive channel routing on one SCC to run
the QMC protocol linking the maximum of 64 time slots of a single multiplexed
line to 64 separate logical channels.
In another method, run the QMC protocol on two separate SCCs, each with its
own set of parameters. With this method, two separate E1s can be routed to the
two separate SCCs. It is not possible, however, to share channels from both E1s
at random between the SCCs. (One E1 will map to the 32 logical channels of one
SCC.)
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
..
.
相關(guān)PDF資料
PDF描述
IDT70V5378S100BG IC SRAM 576KBIT 100MHZ 272BGA
MC7448HX1000LD IC MPU RISC 32BIT 360-FCCBGA
MC68360ZQ25LR2 IC MPU QUICC 25MHZ 357-PBGA
346-012-520-804 CARDEDGE 12POS DUAL .125 GREEN
346-012-520-802 CARDEDGE 12POS DUAL .125 GREEN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68P11E1CFN2R2 制造商:Rochester Electronics LLC 功能描述:8BIT MCU 512RAM A/D EE - Bulk
MC68P11E1CFNE2R 功能描述:8位微控制器 -MCU 8B MCU 512 BYTES RAM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
MC68P-3-2 制造商:PARKER 功能描述:
MC-68PLCC 制造商:SPC Multicomp 功能描述:SOCKET PLCC 68 PIN THRU-HOLE 制造商:SPC Multicomp 功能描述:SOCKET, PLCC, 68 PIN, THRU-HOLE 制造商:PRIVATE LABEL 功能描述:PLCC SOCKET, 68POS, THROUGH HOLE, Connector Type:PLCC Socket, Series:-, No. of C 制造商:SPC Multicomp 功能描述:PLCC SOCKET, 68POS, THROUGH HOLE, Connector Type:PLCC Socket, Series:-, No. of Contacts:68, Pitch Spacing:1.27mm, Contact Termination:Through Hole Vertical, Contact Material:Phosphor Bronze, Contact Plating:Tin , RoHS Compliant: Yes
MC-68PLCC 制造商:SPC Multicomp 功能描述:PLCC SOCKET 68POS THROUGH HOLE
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*