HTMS1x01_8x01 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet
COMPANY PUBLIC
Rev. 3.4 — 21 May 2015
152934 38 of 57
NXP Semiconductors
HTMS1x01; HTMS8x01
HITAG µ transponder IC
14.7.1 READ MULTIPLE BLOCKS in INVENTORY mode
[Advanced, Advanced+]
The READ MULTIPLE BLOCK command can also be sent in inventory mode (which is
marked by INV-Flag = '1' within the request). Here request and response will change as
shown in following tables.
If the transponder detects an error during the inventory sequence, it shall remain silent.
After receiving RWD's command without error the transponder IC transmits the remaining
section of the UID in dual pattern code. The following data (Error Flag, Data 2, optional
CRC in no error case; Error Flag, Error Code, optional CRC in error case) is transmitted in
Manchester Code.
[1] Error, CRC and Data are Manchester coded, UID is dual pattern coded
Table 31. READ MULTIPLE BLOCKS - request format (12h)
Flags Command Mask
length
Mask
value
Parameter 1 Parameter 2 CRC-16 Description
5 6 6 n 8 8 (16) No. of bits
10(1)10 010010 0 n UID
length
First block
number
Number of
blocks
AC with 1
timeslot
00(1)10 010010 0 n UID
length
First block
number
Number of
blocks
AC with 16
timeslot
Table 32. READ MULTIPLE BLOCKS in INVENTORY mode Response format
[1]
Error Flag Data 1 Data 2 CRC-16 Description
1 48 - n 32 x number of blocks (16) No.of bits
0 Remaining section of UID
(without mask value)
User memory block data
