BT8954 CONEXANT [Conexant Systems, Inc], BT8954 Datasheet - Page 88

• Manufacturer Part Number: BT8954
• Description: VOICE PAIR GAIN FRAMER
• Manufacturer: CONEXANT [Conexant Systems, Inc]

5.0 Electrical and Mechanical Specifications
5.1 Electrical Specifications
Table 5-8. Microcomputer Interface Switching Characteristics
Figure 5-4. MCI Write Timing, Intel Mode (MOTEL = 0)
5-6
NOTE(S):
(1)
(2)
(3)
Symbol
33
34
35
36
37
38
39
40
41
Read Strobe* is defined as RD* or CS* in Intel mode, and DS* or CS* when R/W* is high in Motorola mode.
When writing an interrupt mask or status register.
Write Strobe* is defined as WR* or CS* in Intel mode, and DS* or CS* when R/W* is low in Motorola mode.
AD[7:0]
Strobe*
Data Out Enable (Low Z) after Read Strobe* Falling Edge
Data Out Valid after Read Strobe* Low
Data Out Hold after Read Strobe* Rising Edge
Data Out Disable (High Z) after Read Strobe* High
IRQ* Hold after Write Strobe* Rising Edge
IRQ* Delay after Write Strobe* High
Internal Register Delay after Write Strobe* High
Internal RAM Delay after Write Strobe* High
Access Data Register Delay after Write Strobe* High
Write
ALE
21
Address
20
22
Parameter
23
(2,3)
(1)
(2,3)
(3)
(1)
Conexant
(3)
(1)
(3)
24
(1)
26
Data (Input)
27
Minimum
—
—
—
—
—
—
2
2
5
30
Voice Pair Gain Framer
T
QCLK
T
Maximum
2 x T
2 x T
QCLK
—
50
—
25
—
QCLK
QCLK
32 + 20
32
N8954DSC
Bt8954
Units
—
—
—
ns
ns
ns
ns
ns
ns