RS8953 Conexant Systems, Inc., RS8953 Datasheet - Page 157

• Manufacturer Part Number: RS8953
• Description: High-bit-rate Digital Subscriber Line (hdsl) Channel unit
• Manufacturer: Conexant Systems, Inc.

RS8953B/8953SPB
HDSL Channel Unit
6.1.3 Timing Requirements
Figure 6-1. Input Clock Timing
Table 6-4. Clock Timing Requirements
Figure 6-2. Input Setup and Hold Timing
N8953BDSB
Symbol
1/ Tp
Th
Tl
Tr
Tf
Mclk Frequency (Pll_dis = 0; Pll_mul = 16)
Mclk Frequency (Pll_dis = 0; Pll_mul = 8)
Mclk Frequency (Pll_dis = 1)
Tclk, Exclk Frequency
Bclkn Frequency
Tck Frequency
Clock Width High
Clock Width Low
Clock Rise Time
Clock Fall Time
Input Clock
Input Sample
Input Sample
Falling Edge
Rising Edge
Input Clock
Parameter
Th
Thld
Ts
Conexant
Tp
Tf
Thld
Minimum
Ts
0.4 x T
0.4 x T
Tl
0.128
0.144
3.75
7.5
60
0
6.0 Electrical and Timing Specifications
P
P
6.1 Absolute Maximum Ratings
Maximum
0.6 x T
0.6 x T
Tr
4.096
2.320
5.0
10
80
25
20
20
P
P
Units
MHz
MHz
MHz
MHz
MHz
MHz
ns
ns
ns
ns
6-3