DS21458N 데이터 시트보기 (PDF) - Maxim Integrated

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DS21458N

Quad T1/E1/J1 Transceivers

Maxim Integrated 

DS21455/DS21458 Quad T1/E1/J1 Transceivers

DOCUMENT REVISION HISTORY

REVISION

040804

091304

101304

042105

081805

042106

New Product Release.

CHANGES

1. An incorrect Device ID was shown in the IDR register. A table was added to

clearly show the Device IDs for the DS21455 and DS21458.

2. Corrected multiple incorrect pin names in Figure 5-2. The pin names were

changed to match the correct pin names shown in Table 5-2.

Pin A1 was changed from TNEG0 to TNEGO3.

Pin F11 was changed from TLINK3 to TLINK2.

Pin K1 was changed from RTIP to RTIP1.

Pin K9 was changed from UNUSED to N.C.

Pin K15 was changed from JSTRST to TSTRST.

Pin P3 was changed from UNUSED to N.C.

3. The 8X clock reference was removed from Figure 3-1 and Figure 3-2.

4. The thermal data shown in Section 37 was corrected and the LQFP package

information was removed.

5. The supply current shown in Section 37 was corrected and a typical power

dissipation number was added, as well as a note explaining the testing conditions.

Removed CCR4.0, CCR4.1, CCR4.2, and CCR4.3 bits from CCR4. These were

listed as User Programmable Outputs but these do not exist on the DS21458 or the

DS21455.

Removed references to TESO and TDATA in the pin description list, as these pins

are not available on the DS21455/DS21458.

Added the MCLKS bit to CCR1.7 (was missing in previous data sheet revisions) in

Section 12.

Replaced Figure 25-5 and Figure 25-6, added Table 25-6 and Table 25-7.

052406

051507

Added lead-free part numbers to Ordering Information table (page 1).

Removed description for RCL pin (device does not have this pin) (page 23);

corrected register setting for Transmit Signaling Registers E1 CCS mode (page 102).

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