Aclc Gpo Data Register (Acgpodat) 0Xf744 - Toshiba TMPR4925 Manual

14.4.10 ACLC GPO Data Register (ACGPODAT)
This register specifies GPIO (slot 12) output data.
31
15
Bits Mnemonic Field Name
⎯
31:20 Reserved
20 WRPEND Write Pending
19:1 GPODAT GPIO-Out data
⎯ ⎯
0
Writing a value into this register needs several BITCLK cycles to take effect. The software must
guarantee that no write access be executed until the previous write access takes effect (completes), by
reading the ACGPODAT.WRPEND bit prior to writing this register. If it is set for a long time, the
BITCLK signal on the AC-link is probably inactive for whatever reason.
Reserved
GPODAT
R/W
0x00000
Write Pending (Initial value: 0, R)
R 0: Indicates that the previous write operation is complete and the ACGPODAT
register is ready to be written.
1: Indicates that the previous write operation is not complete and the ACGPODAT
register is not yet ready to be written.
GPIO-Out data (Initial value: 0x0_0000, R/W)
R Reads back the value previously written to this field.
W Writes data to the outgoing slot 12 bits[19:1].
R Reads always '0'.
Figure 14.4.7 ACGPODAT Register
14-28
Chapter 14 AC-link Controller
0xF744
21 20 19
GPODAT
WRPEND
R
0 0x00000
Description
⎯
16
R/W : Type
: Initial value
1 0
R : Type
0 : Initial value