TWL1106

VOICEBAND AUDIO PROCESSOR (VBAP)

SLWS094 – JUNE 2001

10

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

01

2

3

4

N–2N–1

N

N+1

Transmit Time Slot

12

3

4

N–2N–1N

80%

20%

tsu(PCMSYN)

th(PCMSYN)

See Note A

See Note C

See Note B

tpd2

tpd1

See Note D

tsu(PCMO)

tpd3

80%

20%

MCLK

PCMSYN

PCMO

NOTES: A. This window is allowed for PCMSYN high.

B. This window is allowed for PCMSYN low (th(PCMSYN)max determined by data collision considerations).

C. Transitions are measured at 50%.

D. Bit 1 = Most significant bit (MSB), Bit N = Least significant bit (LSB)

Figure 1. Transmit Timing Diagram

80%

20%

See Note C

PCMI

PCMSYN

MCLK

01

2

3

4

N –2N –1

N

N +1

20%

80%

12

3

4

N –2N –1N

See Note D

th(PCMSYN)

tsu(PCMSYN)

See Note A

tsu(PCMI)

th(PCMI)

See Note B

Receive Time Slot

NOTES: A. This window is allowed for PCMSYN high.

B. This window is allowed for PCMSYN low.

C. Transitions are measured at 50%.

D. Bit 1 = Most significant bit (MSB), Bit N = Least significant bit (LSB)

Figure 2. Receive Timing Diagram