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SLB9660XQ1.2 データシート(PDF) 7 Page - Infineon Technologies AG

部品番号 SLB9660XQ1.2
部品情報  Trusted Platform Module
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メーカー  INFINEON [Infineon Technologies AG]
ホームページ  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

SLB9660XQ1.2 データシート(HTML) 7 Page - Infineon Technologies AG

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Data Sheet
7
Revision 1.0 2014-12-12
SLB 9660 TPM1.2
Trusted Platform Module
LPC Interface
2.3
Power Management
The SLB 9660 does not support the LPC power down signal (signal LPCPD) or the clock run protocol (signal
CLKRUN). Power management is handled internally; no explicit power-down or standby mode is available.
The device automatically enters a low-power state after each successful command/response transaction. If a
transaction is started on the LPC bus from the host platform, the device will wake immediately and will return
to the low-power mode after the transaction has been finished.
2.4
LPC Access Rights
The registers located in the address space of the SLB 9660 are described in the respective TCG document
(please refer to [4]). The registers READFIFO and WRITEFIFO mentioned in Table 2-1 below refer to the
DATAFIFO register, the names are used to state whether this register is read or written.
Each register has its own access rights which describe if the register is updated on a write or can be read if the
associated ACTIVE.LOCALITY is set respectively not set. If the access cycle is not accepted by the TPM, it will be
master aborted (no LPC SYNC cycle will be generated and no action is done on the internal registers).
Table 2-1 shows which operation is done by the TPM on each register depending on the ACTIVE.LOCALITY bit.
Note: In Table 2-1, “abort” means that no valid SYNC is generated when a cycle is seen by the interface which
shall be aborted. The data present in an aborted write access cycle does not change the addressed
register.
Table 2-1 LT Register Access Matrix
ACTIVE.LOCALITY set for
this locality
ACTIVE.LOCALITY set for
different LOCALITY
ACTIVE.LOCALITY not set
READ
WRITE
READ
WRITE
READ
WRITE
STS
read
write
abort
abort
abort
abort
INT.ENABLE
read
write
read
abort
read
abort
INT.VECTOR
read
write
read
abort
read
abort
INT.STATUS
read
reset
interrupt
read
abort
read
abort
INT.CAPABILITY read
- (abort)
read
- (abort)
read
- (abort)
ACCESS
read
write
read
write
read
write
READFIFO
read1)
1) If STS.DATA.AVAIL is not set, this access is ‘abort’.
abort
abort
abort
abort
abort
WRITEFIFO
abort
write
abort
abort
abort
abort
Configuration
Registers
read
write
read
abort
read
abort
HASH.START
abort
write
abort
abort
abort
write2)
2) The write to HASH.START sets ACCESS.ACTIVE.LOCALITY of locality 4.
HASH.DATA
abort
write
abort
abort
abort
abort
HASH.END
abort
write3)
3) The write to HASH.END is an implicit release of the TPM (like a ‘1’-write to the ACCESS.ACTIVE.LOCALITY bit of
locality 4).
abort
abort
abort
abort


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