cn8236 Mindspeed Technologies, cn8236 Datasheet - Page 389

• Manufacturer Part Number: cn8236
• Description: Atm Servicesar Plus With Xbr Traffic Management
• Manufacturer: Mindspeed Technologies

CN8236
ATM ServiceSAR Plus with xBR Traffic Management
16.1.5 PHY Interface Timing (Standalone Mode)
Table 16-8. PHY Interface Timing (PROCMODE = 1)
Figure 16-9. Synchronous PHY Interface Input Timing
28236-DSH-001-B
NOTE(S):
(1)
(2)
Symbol
See
See
Sync Input
t
SYSCLK
t
t
ov
ih
is
Figure 16-9
Figure 16-10
PWAIT* Input Setup
LDATA Input Setup
PWAIT* Input Hold
LDATA Input Hold
PRDY* Output Valid Delay
PAS Output Valid Delay
PCS* Output Valid Delay
PBLAST* Output Valid Delay
PWNR Output Valid Delay
LDATA* Output Valid Delay
LADDR Output Valid Delay
for waveforms and definitions.
for waveforms and definitions. The outputs are measured with a load of 35 pF.
The standalone mode of operation is entered when the PROCMODE input is at a
logic high indicating that no local processor is present. In this mode, the CN8236
changes its memory map to include the ATM physical interface device. The
interface is fully synchronous to SYSCLK and is designed to interface directly to
the RS825x ATM Receiver/Transmitter. Timing is provided in
Figures 16-9
(1)
(1)
(1)
(1)
Parameter
(2)
(2)
Mindspeed Technologies
(2)
(2)
(2)
(2)
(2)
and 16-10. (See
Synchronous Outputs
Synchronous Inputs
t is
Section 10.6
16.0 Electrical and Mechanical Specifications
t ih
™
for details.)
Min
14
5
0
0
5
5
5
5
5
1
1
Max
—
—
—
—
15
15
15
15
15
10
10
Table 16-8
16.1 Timing
Units
and
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
16-13
8236_115