參數(shù)資料
型號: DS21FT42N
廠商: Maxim Integrated Products
文件頁數(shù): 62/114頁
文件大?。?/td> 0K
描述: IC FRAMER T1 4X3 12CH IND 300BGA
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 40
控制器類型: T1 調(diào)幀器
接口: 并行/串行
電源電壓: 2.97 V ~ 3.63 V
電流 - 電源: 225mA
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 300-BBGA
供應(yīng)商設(shè)備封裝: 300-PBGA(27x27)
包裝: 管件
DS21FT42/DS21FF42
51 of 114
MOSCR1: MULTIFRAMES OUT OF SYNC COUNT REGISTER 1(Address = 25 Hex)
MOSCR2: MULTIFRAMES OUT OF SYNC COUNT REGISTER 2(Address = 27 Hex)
(MSB)
(LSB)
MOS/
FB11
MOS/
FB10
MOS/
FB9
MOS/
FB8
(note 1)
MOSCR1
MOS/
FB7
MOS/
FB6
MOS/
FB5
MOS/
FB4
MOS/
FB3
MOS/
FB2
MOS/
FB1
MOS/
FB0
MOSCR2
SYMBOL
POSITION
NAME AND DESCRIPTION
MOS/FB11
MOSCR1.7
MSB of the 12–Bit Multiframes Out of Sync or F–Bit
Error Count (note #2)
MOS/FB0
MOSCR2.0
LSB of the 12–Bit Multiframes Out of Sync or F–Bit
Error Count (note #2)
NOTES:
1. The lower nibble of the counter at address 25 is used by the Path Code Violation Count Register
2. MOSCR counts either errors in framing bit position (RCR2.0=0) or the number of multiframes out of
sync (RCR2.0=1)
MULTIFRAMES OUT OF SYNC COUNTING ARRANGEMENTS Table 11-3
FRAMING MODE
(CCR2.3)
COUNT MOS OR F–BIT
ERRORS
(RCR2.0)
WHAT IS COUNTED
IN THE MOSCRs
D4
MOS
number of multiframes out of
sync
D4
F–Bit
errors in the Ft pattern
ESF
MOS
number of multiframes out of
sync
ESF
F–Bit
errors in the FPS pattern
12.
DS0 MONITORING FUNCTION
Each framer in the DS21Q42 has the ability to monitor one DS0 64 Kbps channel in the transmit
direction and one DS0 channel in the receive direction at the same time. In the transmit direction the user
will determine which channel is to be monitored by properly setting the TCM0 to TCM4 bits in the
CCR5 register. In the receive direction, the RCM0 to RCM4 bits in the CCR6 register need to be
properly set. The DS0 channel pointed to by the TCM0 to TCM4 bits will appear in the Transmit DS0
Monitor (TDS0M) register and the DS0 channel pointed to by the RCM0 to RCM4 bits will appear in the
Receive DS0 (RDS0M) register.
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