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NXP Semiconductors
UM191812
PN544 C2 User Manual
191812
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© NXP B.V. 2010. All rights reserved.
User Manual
Rev. 1.2 — 2010-06-16
78 of 172
9.6 Polling Loop
The host could manage the polling loop mechanism through a dedicated gate
“PollingLoopMgt”.
Table 65.
Polling Loop Management Gate
Gate
G
ID
PollingLoopMgt gate
‘94’
Using this gate the host is able to:
- Configure the polling loop
- Manage clock request/acknowledge via host commands
- Receive information about UICC reader activities
Table 66. Polling Loop events
Value Event
Description
‘01’
NXP_EVT_CLK_ACK
This event is sent by the host to acknowledge the
clock request (if
PlClockAck
EEPROM area has
been previously set to 2)
‘02’
NXP_EVT_CLK_REQUEST
This event is sent to the host to inform that the
input clock is requested (if
PlClockRequest
EEPROM area has been previously set to 2)
‘03’
NXP_EVT_ACTIVATE_RDPHASE
This event is sent to the host to inform that the SE
is requesting for the activation of the reader phases
in the polling loop (see NXP_PL_RDPHASES
registry entry).
‘04’
NXP_EVT_DEACTIVATE_RDPHASE
This event is sent to the host to inform that the SE
is no more requesting for the activation of the
reader phases in the polling loop (see
NXP_PL_RDPHASES registry entry).
The
NXP_EVT_CLK_REQUEST
has one parameter:
Table 67. NXP_EVT_CLK_REQUEST parameter
Description Length
Status 1