UCB1510DB Просмотр технического описания (PDF) - Philips Electronics

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производитель

UCB1510DB

AC97 digital modem codec

Philips Electronics 

Philips Semiconductors

UCB1510

AC97 digital modem codec

15.2 Vendor test modes

When starting a RESET pin induced cold reset, the AClink pins are sensed for

Vendor Test mode selection. BIT_CLK does not need to be running at that moment

Table 29: Mode selection with AC pins

SYNC

SDOUT

Mode

0

0

Normal mode, the AClink is operating properly.

0

1

ATE test mode. All AClink pins are set to input thus allowing

board level JTAG testing.

1

0

Vendor test mode.

1

1

ATE test mode.

When the vendor test mode is activated, the vendor test register takes action. This

mode is for test only and should not be used in normal operation. Exiting this mode

requires a cold reset.

15.3 Primary/secondary codec selection

Secondary codec implementation is selected by wiring the A0 pin low.

When A0 is low (A0 is 1), the XTAL_IN is used as A1 thus allowing ‘01’ and ‘11’ as

secondary addresses. ‘10’ is not possible. The ID register will then reflect the A1,A0.

Details can be found in the description of register 0x3C.

When the UCB1510 is a secondary codec, it derives its internal clock from BIT_CLK.

BITCLK is therefore configured as input.

16. Limiting values

Table 30: Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134). [1]. [2]

Symbol Parameter

Conditions

Min

Max

Unit

VDD

supply voltage

Vi

DC input voltage

Vo

DC output voltage

Ii(d)

diode input current

Io(d)

diode output current

Io

continuous output current,

digital outputs

−0.5

+4.0

V

−0.5

VDD + 0.5 V

−

VDD + 0.5 V

−

10

mA

−

10

mA

−

4

mA

Tstg

storage temperature

−55

+150

°C

[1] Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the

device. This is a stress rating only and functional operation of the device at these or any conditions

other than those described in the Absolute Maximum Rating section of this specification is not implied

[2] Parameters are valid over the ambient operating temperature unless otherwise specified. All voltages

are with respect to VSSD, unless otherwise noted.

9397 750 06856

Preliminary specification

Rev. 01 — 4 February 2000

© Philips Electronics N.V. 2000. All rights reserved.

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