cn8223 Mindspeed Technologies, cn8223 Datasheet - Page 143

• Manufacturer Part Number: cn8223
• Description: Atm Transmitter/receiver With Utopia Interface
• Manufacturer: Mindspeed Technologies

CN8223
ATM Transmitter/Receiver with UTOPIA Interface
Figure 4-4. Parallel Interface Timing
Table 4-6. Overhead Port Interface Timing
100046D
t ptx, t prx
t m1rck1
t m0rck0
Name
t tmtck
t rck1h
t drck1
t rck1d
t rck0h
t drck0
t rck0d
t tckh
t dtck
t tckd
Interval
13–14
12–13
11–13
13–15
8–10
2–4
1–2
3–4
4–5
8–9
6–8
7–8
—
RXDAT[7:0]
TXDAT[7:0]
Transmit or Receive Clock Input Period
Transmit Overhead Clock Pulse Width High
Transmit Marker Valid before Transmit Clock High
Transmit Overhead Data Setup before Clock Falling Edge
Transmit Overhead Data Hold after Clock Falling Edge
Receive Overhead Clock1 Pulse Width High
Marker1 Valid before Clock1 Rising Edge
Receive Overhead Data Valid before Clock1 Rising Edge
Receive Overhead Data Valid after Clock1 Rising Edge
Receive Overhead Clock0 Pulse Width High
Marker0 Valid before Clock0 Rising Edge
Receive Overhead Data Valid before Clock0 Rising Edge
Receive Overhead Data Valid after Clock0 Rising Edge
TXDELO
RXCKI
RXOD
TXOD
TXCKI
1
2
3
Description
4
Conexant
10
11
5
6
12
7
13
14
15
8
16
9
4.0 Electrical and Mechanical Specifications
4 × t ptx
4 × t prx
3 × t prx
3 × t prx
2 × t prx
4 × t prx
3 × t prx
3 × t prx
3 × t ptx
Min
6.4
6.0
6.0
2.4
Max
4.3 Timing
—
—
—
—
—
—
—
—
—
—
—
—
—
4-9