參數(shù)資料
型號(hào)： IDT82P2821BH
廠商： IDT, Integrated Device Technology Inc
文件頁數(shù)： 138/151頁
文件大小： 0K
描述： IC LIU T1/J1/E1 21+1CH 640-PBGA
標(biāo)準(zhǔn)包裝： 5
功能： 線路接口單元（LIU）
接口： E1，J1，T1
電路數(shù)： 1
電源電壓： 1.8V, 3.3V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 640-BGA 裸露焊盤
供應(yīng)商設(shè)備封裝： 640-PBGA-EP（31x31）
包裝： 托盤
包括： 缺陷和警報(bào)檢測，驅(qū)動(dòng)器過流檢測和保護(hù)，LLOS 檢測，PRBSARB / IB 檢測和生成
其它名稱： 82P2821BH
IDT82P2821
21(+1) CHANNEL HIGH-DENSITY T1/E1/J1 LINE INTERFACE UNIT
Programming Information
87
February 6, 2009
5.2.2
PER-CHANNEL REGISTER
CHCF - Channel Configuration Register
TJA - Transmit Jitter Attenuation Configuration Register
Address: 001H, 041H, 081H, 0C1H, 101H, 141H, 181H, 1C1H, (CH1~CH8)
201H, 241H, 281H, 2C1H, 301H, 341H, 381H, 3C1H, (CH9~CH16)
401H, 441H, 481H, 4C1H, 501H, (CH17~CH21)
7C1H (CH0)
Type: Read / Write
Default Value: 00H
Bit
Name
Description
7 - 2
-
Reserved.
1
CHRST
Writing a ‘1’ to this bit will initiate per-channel software reset. Once initiated, per-channel software reset completes in 1 s maxi-
mum.
This bit is self cleared.
0
T1E1
This bit is valid only when the TEHWE pin is low. This bit selects T1/J1 or E1 operation mode.
0: T1/J1. (default)
1: E1.
This bit can not be reset by per-channel software reset.
Address: 002H, 042H, 082H, 0C2H, 102H, 142H, 182H, 1C2H, (CH1~CH8)
202H, 242H, 282H, 2C2H, 302H, 342H, 382H, 3C2H, (CH9~CH16)
402H, 442H, 482H, 4C2H, 502H, (CH17~CH21)
7C2H (CH0)
Type: Read / Write
Default Value: 00H
Bit
Name
Description
7 - 5
-
Reserved.
4
TJA_LIMT
This bit determines whether the JA-Limit function is enabled in the TJA.
0: Disable. (default)
1: Enable. The speed of the TJA outgoing data will be adjusted automatically if the FIFO in the TJA is 2-bit close to its full or emp-
tiness.
3
TJA_EN
This bit controls whether the TJA is enabled to use.
0: Disable. (default)
1: Enable.
2 - 1
TJA_DP[1:0]
These bits select the depth of the TJA FIFO.
00: 128-bit. (default)
01: 64-bit.
1X: 32-bit.
0
TJA_BW
This bit selects the Corner Frequency for the TJA.
0: 5 Hz (in T1/J1 mode) / 6.77 Hz (in E1 mode). (default)
1: 1.26 Hz (in T1/J1 mode) / 0.87 Hz (in E1 mode).
76
54
3
2
1
0
--
-
CHRST
T1E1
7
654321
0
-
TJA_LIMT
TJA_EN
TJA_DP1
TJA_DP0
TJA_BW
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