CSP1027 datasheet(61/64 Pages) AGERE

61 / 64 page

Lucent Technologies Inc.

Data Sheet

CSP1027 Voice Band Codec for

December 1999

Cellular Handset and Modem Applications

11 Timing Characteristics and Requirements (continued)

11.5 Serial Multiprocessor Communication

Figure 44. SIO Multiprocessor Timing Diagram

Note: Capacitance load on DO, SYNC, and SADD = 100 pF.

Table 32. Timing Requirements for Multiprocessor Communication

Abbreviated

Reference

Parameter

5.0 V

3.3 V

3.0 V

Unit

Min

Max

Min

Max

Min

Max

t25

Sync High Setup (high to high)

—

t26

Sync Low Setup (low to high)

—

t27

Sync Hold (high to invalid)

—

Table 33. Timing Characteristics for Multiprocessor Communication

Abbreviated

Reference

Parameter

5.0 V

3.3 V

3.0 V

Unit

Min

Max

Min

Max

Min

Max

t28

Data Delay (bit 0 only) (low to valid)

—

t29

Data Disable Delay (high to 3-state)

—

t30

Address Delay (bit 0 only) (low to valid)

—

t31

Address Delay (high to valid)

—

t32

Address Hold (low to valid)

—

t33

Address Disable Delay (high to 3-state)

—

B15

B14

B15

AD0

AD1

AD7

AS0

AD0

AS7

IOCK

SYNC

VIH–

VIL–

DO/DI

VOH–

VOL–

SADD

t27

t26

t27

t25

t28

t31

t30

t32

t33

t29

5-7623 (F)

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