參數(shù)資料
型號(hào)： T8102A
英文描述： H.100/H.110 Interface and Time-Slot Interchangers
中文描述： H.100/H.110接口和時(shí)隙Interchangers
文件頁(yè)數(shù)： 66/112頁(yè)
文件大小： 1408K
代理商： T8102A
62
Lucent Technologies Inc.
Advance Data Sheet
November 1999
H.100/H.110 Interfaces and Time-Slot Interchangers
Ambassador T8100A, T8102, and T8105
2 Architecture and Functional Descrip-
tion
(continued)
2.7 Error Registers
The devices have five error registers:
I
CLKERR1 [0x28]
I
CLKERR2 [0x29]
I
CLKERR3 [0x2C]
I
CKW [0x2B]
I
SYSERR [0x2A]
When programming the clock registers, writing to CKW
and CKS should be programmed last.
These are the clock error, watchdog enable, and sys-
tem error registers. The CLKERR1 register is used to
indicate failing clocks, and the CLKERR2 indicates
whether the failure is permanent or transient in nature.
If the clocks fail, i.e., disappear or momentarily drop
out, then corresponding bits in both registers will be
set. If the clock is reestablished, i.e., a transient error,
then the T bit(s) will clear, but the E bit(s) will remain
set. All of the E bits are ORed together and drive the
CLKERR pin.
The clocks listed in Table 58 are sampled by the
16.384 MHz internal clock. Effectively, each clock has
a watchdog. If the clock is switching, the watchdog
clears. If the clocks stop, then the watchdog sets the
appropriate E and T bits. If the clock is re-established,
then the E bits remain stuck, but the T bits clear with
the watchdog. Since fallback is triggered on the E bits,
a transient clock can force a fallback. The CT_C8A and
CT_C8B watchdogs sample both rising and falling
edges at a 32.768 MHz sample rate (crystal oscillator
input multiplied by 2) in order to meet the ECTF H.110
specification of detecting a missing received rising
edge within 35 ns. The /C16+, /C16-, /C4, C2, SCLK,
SCLKX2 watchdog does not have this ECTF H.110
specification. Each clock is divided down to 1 MHz and
are monitored for a loss of signal at 1 MHz.
The CT_FRAMEA, CT_FRAMEB, /FR_COMP
CT_NETREF1, and CT_NETREF2 watchdog circuitry
is simply a counter. If there is an 8 kHz input on
CT_NETREF, for example, every rising edge of the
8 kHz triggers an internal counter. This counter counts
up to some value. If the terminal count is reached, an
error will be reported. The circuitry does not look at the
input signal CT_NETREF for some polarity. The
assumption is, if the counter reached terminal count
there is no CT_NETREF. If there was a CT_NETREF,
the counter would not have reached terminal count
because the counter would have been reset.
CT_NETREF 1 and 2 are reported if there is no switch-
ing on CT_NETREF for 125 μs. If CT_NETREF is set to
a frequency other than 8 kHz, the error bits NRE and
NRT should not be used to monitor for a clock failure.
Table 58. CLKERR1 and CLKERR2: Error Indicator and Current Status, 0x28 and 0x29
Table 58 describes both CLKERR1 and CLKERR2.
Symbol
CAE
CAT
CBE
CBT
CFE
CFT
C16E
C16T
C42E
C42T
SCE
SCT
SC2E
SC2T
NRE
NRT
Bit
7
Description
CA
=> Reports failures on CT_C8A or /CT_FRAMEA.
6
CB
=> Reports failures on CT_C8B or /CT_FRAMEB.
5
CF
=> Reports failures on /FR_COMP
4
C16 => Reports failures on /C16+ or /C16–.
3
C42 => Reports failures on /C4 or C2.
2
SC
=> Reports failures on SCLK.
1
SC2 => Reports failures on
SCLKX2
.
0
NR
=> Reports failures on CT_NETREF1 or CT_NETREF2. 8 kHz only.
相關(guān)PDF資料
PDF描述
T8105A H.100/H.110 Interface and Time-Slot Interchangers
T8100 H.100/H.110 Interface and Time-Slot Interchanger
T8110 Version History
T8301 T8301 Internet Protocol Telephone Phone-On-A-Chip⑩ IP Solution DSP
T8302 T8302 Internet Protocol Telephone Advanced RISC Machine (ARM) Ethernet QoS Using IEEE 802.1q
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
T810-400B 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HIGH PERFORMANCE TRIACS
T8105A 制造商:AGERE 制造商全稱:AGERE 功能描述:H.100/H.110 Interface and Time-Slot Interchangers
T810-600B 功能描述:雙向可控硅 8A TRIACS RoHS:否 制造商:STMicroelectronics 開(kāi)啟狀態(tài) RMS 電流 (It RMS):16 A 不重復(fù)通態(tài)電流:120 A 額定重復(fù)關(guān)閉狀態(tài)電壓 VDRM:600 V 關(guān)閉狀態(tài)漏泄電流（在 VDRM IDRM 下）:5 uA 開(kāi)啟狀態(tài)電壓: 保持電流（Ih 最大值）:45 mA 柵觸發(fā)電壓 (Vgt):1.3 V 柵觸發(fā)電流 (Igt):1.75 mA 最大工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-220AB
T810-600B 制造商:STMicroelectronics 功能描述:TRIAC 8A 600V D-PAK
T810-600B-TR 功能描述:雙向可控硅 8A TRIACS RoHS:否 制造商:STMicroelectronics 開(kāi)啟狀態(tài) RMS 電流 (It RMS):16 A 不重復(fù)通態(tài)電流:120 A 額定重復(fù)關(guān)閉狀態(tài)電壓 VDRM:600 V 關(guān)閉狀態(tài)漏泄電流（在 VDRM IDRM 下）:5 uA 開(kāi)啟狀態(tài)電壓: 保持電流（Ih 最大值）:45 mA 柵觸發(fā)電壓 (Vgt):1.3 V 柵觸發(fā)電流 (Igt):1.75 mA 最大工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-220AB
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。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(gòu)。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(gòu)

我的聯(lián)系方式

*
*
*