参数资料
型号: DS21FT42N
厂商: DALLAS SEMICONDUCTOR
元件分类: Digital Transmission Controller
英文描述: DATACOM, FRAMER, PBGA300
封装: 27 X 27 MM, BGA-300
文件页数: 115/115页
文件大小: 534K
代理商: DS21FT42N
DS21FF42/DS21FT42
99 of 115
TRANSMIT SIDE ESF TIMING Figure 24-9
TRANSMIT SIDE BOUNDARY TIMING
(with elastic store disabled) Figure 24-10
12
34
5
6
7
8
9
1011
12 1314
15
16
17
18 19
20
21 22
23
24
FRAME#
1
2
3
4
6
7
TSYNC
TLCLK
TLINK
TLCLK
TLINK
Notes:
1. TSYNC in the frame mode (TCR2.3 = 0) and double-wide frame sync is not enabled (TCR2.4 = 0)
2. TSYNC in the frame mode (TCR2.3 = 0) and double-wide frame sync is enabled (TCR2.4 = 1)
3. TSYNC in the multiframe mode (TCR2.3 = 1)
4. ZBTSI mode disabled (TCR2.5 = 0)
5. TLINK data (FDL bits) is sampled during the F-bit time of odd frame and inserted into the outgoing
T1 stream if enabled via TCR1.2
6. ZBTSI mode is enabled (TCR2.5 = 1)
7. TLINK data (Z bits) is sampled during the F-bit time of frames 1, 5, 9, 13, 17, and 21 and inserted
into the outgoing stream if enabled via TCR1.2
8. TLINK and TLCLK are not synchronous with TFSYNC
TCLK
TNEG
LSB
MSB
F
MSB
LSB
TCHCLK
TSYNC
TCHBLK
Notes:
1. There is a 10 TCLK delay from TSER to TPOS/TNEG.
2. TSYNC is in the output mode (TCR2.2 = 1)
3. TSYNC is in the input mode (TCR2.2 = 0)
4. TCHBLK is programmed to block channel 2
5. Shown is TLINK/TLCLK in the ESF framing mode
TLCLK
TLINK
LSB
CHANNEL 1
TSYNC
Don't Care
3
TSIG
CHANNEL 1
CHANNEL 2
A
B
C/A
D/B
AB
C/A
D/B
2
5
4
TSER
LSB
MSB
FMSB
CHANNEL 1
LSB
MSB
CHANNEL 2
TPOS
CHANNEL 24
1
相关PDF资料
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