Rainbow Electronics DS26519 - Manual (Page 142)

DS26519 16-Port T1/E1/J1 Transceiver
142 of 310
Register Name: IDR
Register Description: Device Identification Register
Register Address: 00F8h
Bit
# 7 6 5 4 3 2 1 0
Name ID7 ID6 ID5 ID4 ID3 ID2 ID1 ID0
Default
1 1 0 1 1 0 0 0
Bits 7 to 3: Device ID (ID[7:3]). The upper five bits of the IDR are used to display the DS26519 ID.
Table 10-17. Device ID Codes in this Product Family
DEVICE ID7 ID6 ID5 ID4 ID3
DS26519 1 1 0 1 1
DS26519 1 1 0 1 0
DS26528 0 1 0 1 1
DS26524 0 1 1 0 0
DS26522 0 1 1 0 1
DS26521 0 1 1 1 0
Bits 2 to 0: Silicon Revision Bits (ID[2:0]). The lower three bits of the IDR are used to display a sequential
number denoting the die revision of the chip. The initial silicon revision = “000” and is incremented with each silicon
revision. This value is not the same as the two-character device revision on the top brand of the device. This is due
to the fact that portions of the device assembly other than the silicon may change, causing the device revision
increment on the brand without having a revision of the silicon. ID0 is the LSB of a decimal code that represents
the chip revision.