SAPH and SAPH_A Registers
553
SLAU367P – October 2012 – Revised April 2020
Copyright © 2012–2020, Texas Instruments Incorporated
Sequencer for Acquisition, Programmable Pulse Generator, and Physical
Interface (SAPH, SAPH_A)
21.8.32 SAPHASCTL1/SAPH_AASCTL1 Register (Offset = 62h) [reset = 0h]
SAPHASCTL1/SAPH_AASCTL1 is shown in
and described in
Return to
A-SEQ control register 1
Figure 21-52. SAPHASCTL1/SAPH_AASCTL1 Register
15
14
13
12
11
10
9
8
RESERVED
CHOWN
STDBY
RESERVED
ESOFF
R-0h
R/W-0h
R/W-0h
R/W-0h
R/W-0h
7
6
5
4
3
2
1
0
EARLYRB
RESERVED
CHACT
RESERVED
RESERVED
RESERVED
CHTOG
R/W-0h
R-0h
R-0h
R/W-0h
R-0h
R-0h
R/W-0h
Table 21-37. SAPHASCTL1/SAPH_AASCTL1 Register Field Descriptions
Bit
Field
Type
Reset
Description
15-12
RESERVED
R
0h
Reserved
11
CHOWN
R/W
0h
In general, if CH0 is selected for Tx, CH1 is selected for Rx.
However, when this bit is set to '1', the Tx channel and Rx channel
are identical. This bit can be used for debugging purpose.
Reset type: PUC
0h (R/W) = Tx channel and Rx channel are not the same (This is the
typical configuration).
1h (R/W) = Tx channel and Rx channel are identical.
10
STDBY
R/W
0h
ASQ can send a request sigal to the PSQ (Power Sequencer) of the
USS module when the OFF request is received (See
SAPHASCTL1.ESOFF and the UUPS module).
Reset type: PUC
0h (R/W) = PWROFF : The ASQ sends a power down request to the
PSQ (Power Sequencer) when the OFF request is received.
1h (R/W) = STDBY : The ASQ sends a standby request to the PSQ
(Power Sequencer) when the OFF request is received.
9
RESERVED
R/W
0h
8
ESOFF
R/W
0h
Enable the OFF request when ASQ completes all of the
measurement sequences.
Reset type: PUC
0h (R/W) = OFF request is disabled. The ASQ does not send a
request about USS power mode to the PSQ.
1h (R/W) = OFF request is generated after sequence
7
EARLYRB
R/W
0h
Early Receive Bias Control. The Rx bias is applied at the
TIMEMARK C, but when this bit is set to '1', the Rx bias is applied at
the TIMEMARK A.
Reset type: PUC
0h (R/W) = Rx bias is applied to the Rx channel by the TIMEMARK
C
1h (R/W) = Rx bias is applied to the Rx channel by the TIMEMARK
A
6-5
RESERVED
R
0h
Reserved
4
CHACT
R
0h
Read Only bit. This bit indicates the currently selected Tx channel.
Reset type: PUC
3
RESERVED
R/W
0h
2
RESERVED
R
0h
Reserved
1
RESERVED
R
0h
Reserved