Philips Semiconductors
Universal Timeslot Interchange
Preliminary specification
SC2000
Table 13. CLK_IN, SYNC_IN — PEB Network Master Mode (CLK_IN Divider ≥ 2)
Symbol
t1
t2
t3
t4
t5
t6
t7
t8
t9
t10a
t10b
t11a
t11b
t12
t13
t14
t15
t16
t17
t18
t19
Note:
Parameter
Min
Typ
Max
Unit
CLK_IN period
244
ns
CLK_IN high time
122
ns
CLK_IN low time
122
ns
SYNC_IN low setup to CLK_IN↓(PEB conventional)
10
ns
SYNC_IN low hold from CLK_IN↓(PEB conventional)
10
ns
SYNC_IN high setup to CLK_IN↓(PEB conventional)
10
ns
SYNC_IN high hold from CLK_IN↓(PEB conventional)
10
ns
SYNC_IN setup to CLK_IN↓ (ST-BUS)
10
ns
SYNC_IN hold from CLK_IN ↓ (ST-BUS)
10
ns
CLKR, L_CLKT↑delay from CLK_IN ↑(PEB conventional)
60
ns
CLKR, L_CLKT↑delay from CLK_IN ↓ (ST-BUS)
60
ns
CLKR, L_CLKT↓delay from CLK_IN ↑(PEB conventional)
30
ns
CLKR, L_CLKT↓delay from CLK_IN ↓ (ST-BUS)
30
ns
FSYNCR, L_FSYNCT↑delay from CLKR↑
70
ns
FSYNCR, L_FSYNCT↓delay from CLKR↑
35
ns
MSYNCR ↑delay from CLKR↑
70
ns
MSYNCR ↓delay from CLKR↑
35
ns
L_MSYNCT ↑delay from CLKR↑
70
ns
L_MSYNCT ↓delay from CLKR↑
35
ns
L_MSYNCT ↑delay from MSYNCT↑
60
ns
L_MSYNCT ↓delay from MSYNCT↓
25
ns
1. Timing measured with 200 pF 220/330Ω termination on all PEB outputs. Open collector low to high transitions include 43 ns delay from hi-Z to 2.4 V.
2000 Sep 07
36