Samsung S3C6400X User Manual page 346

S3C6400X RISC MICROPROCESSOR
SECURITY SUB-SYSTEM RX FIFO MODULE
FIFO-RX CONTROL REGISTER
Register Address
FRx_Ctrl 0x7D40_0000
FRx_Ctrl
FRx_WrPrivError
FRx_RdPrivError
Reserved
FRx_Full
FRx_Empty
FRx_Done
FRx_Running
FRx_Wd2Write [23:16]
FRx_Wd2Read
FRx_Dest_Module
FRx_Host_Rd_En
FRx_Host_Wr_En
FRx_Sync_Tx
FRx_Reset
FRx_ERROR_En
FRx_Start
R/W
R/W
FIFO-Rx Control/Status Reg. (Only MSB 16-bit readable)
Bit
Sets to 1 if write access to FIFO-Rx has resulted in a
[31] privilege error (e.g. Host or the command are not allowed to
access FIFO-Rx).
Sets to 1 if read access to FIFO-Rx has resulted in a privilege
[30] error (e.g. Host or the command are not allowed to access
FIFO-Rx).
[29] Reserved
[27] Sets to 1 if FIFO-Rx buffer (FRx_WrBuf) is full.
[26] Sets to 1 if FIFO-Rx buffer (FRx_WrBuf) is empty.
Sets to 1 if FIFO-Rx has finished transferring FRx_MLen
[25]
words of data to the destination.
Sets to 1 if FIFO-Rx is transferring data to the destination or
[24] waiting for destination input buffer is ready. Sets to 1 when
FRx_Start bit resets to 0.
Number of words that can be written to FIFO memory
(FRx_WrBuf)
Number of words that can be read from FIFO memory
[15:8]
(FRx_WrBuf)
Destination module selection.
[7:6]
( 00 : AES, 01:DES/3DES, 10: SHA-1/PRNG, 11: Not
Used )
[5] Enables Host read from FRx_Ctrl[31:16] and FRx_MLenCnt.
[4] Enables Host write to FRx_WrBuf
[3] When enabled, FIFO-Rx waits for FIFO-Tx to retrieve output
data from source module before transferring data to the
destination module.
[2] Stops current FIFO-Rx transfer and resets FSM and all the
register.
[1] Enables ERROR response via HRESP port when host tries to
access FIFO-Rx and access is not enabled by FRx_Ctrl[4] or
[5].
[0] FIFO-Rx transfer start bit. Resets to 0 when internal FSM
starts transferring data to destination.
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
Description
Description
SECURITY SUB-SYSTEM
Reset Value
0x0420_0000
Initial State
0b
0b
0b
0b
1b
0b
0b
0x00
0x00
0b
0b
0b
0b
0b
0b
0b
13-9