Datasheet

DS26514 4-Port T1/E1/J1 Transceiver
19-5856; Rev 4; 5/11 102 of 305
10. DEVICE REGISTERS
Thirteen address bits are used to control the settings of the registers. The registers control functions of the framers,
LIUs, and BERTs within the DS26514. The map is divided into four framers, followed by four LIUs and four BERTs.
Global registers (applicable to all four transceivers and BERTs) are located within the address space of Framer 1.
The register details are provided in the following tables. The framer registers bits are provided for Framer 1 and
address bits A[12:8] determine the framer addressed.
10.1 Register Listings
The framer registers have an offset of 200 hex, the LIU registers have an offset of 20 hex, and the BERT registers
have an offset of 10 hex for each transceiver.
Table 10-1. Register Address Ranges (in Hex)
GLOBAL
REGISTERS
RECEIVE
FRAMER
TRANSMIT
FRAMER
LIU BERT EXT BERT HDLC-256
00F0 – 00FF
—
— — — — —
CH1
—
0000 – 00EF
0100 – 01EF
1000 – 101F
1100 – 110F
1400 – 140F
1500 – 151F
CH 2
—
0200 – 02EF
0300 – 03EF
1020 – 103F
1110 – 111F
1410 – 141F
1520 – 153F
CH 3
—
0400 – 04EF
0500 – 05EF
1040 – 105F
1120 – 112F
1420 – 142F
1540 – 155F
CH 4
—
0600 – 06EF
0700 – 07EF
1060 – 107F
1130 – 113F
1430 – 143F
1560 – 157F