ucb1400 NXP Semiconductors, ucb1400 Datasheet - Page 15

• Manufacturer Part Number: ucb1400
• Description: Audio Codec With Touch Screen Controller And Power Management Monitor
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 5:
9397 750 09611
Product data
Function
AC ’97 digital controller primary
read frame N, SDATA_OUT
UCB1400 status frame N+1,
in response to AC ’97 digital
controller primary read frame N,
SDATA_IN
AC ’97 digital controller primary
write frame N, SDATA_OUT
UCB1400 status frame N+1,
in response to AC ’97 digital
controller primary write frame N,
SDATA_IN
AC ’97 digital controller
secondary read or write frame N,
SDATA_OUT
UCB1400 status frame N+1,
in response to AC ’97 digital
controller secondary read or write
frame N, SDATA_IN
UCB1400 response to AC ’97 digital controller access
In order for the AC ’97 Digital Controller to access the UCB1400, the 2-bit Codec ID
field (chip select) (LSBs of Output Slot 0) must be set to ‘0’ (see
UCB1400 shall monitor the Frame Valid, Slot 1 Valid Command Address, Slot 2 Valid
Command Data and Codec ID bits, and respond only if properly accessed by the
AC ’97 Digital Controller, as illustrated in
reside in slot 1, they have validity independent of the tag bit for Valid Slot 1 Address.
The UCB1400 shall only set SDATA_IN tag bits for Slot 1 (Address) and Slot 2 (Data)
to ‘1’ when returning valid data from a previous register read, regardless of the
validity of SLOTREQ bits (see also
Slot 0, bit 15
(Valid frame)
1
1
1
1
1
1
Rev. 02 — 21 June 2002
Slot 0, bit 14
(Valid Slot 1
address)
1
1
1
0
0
0
Slot 0, bit 13
(Valid Slot 2
data)
0
1
1
0
0
0
Section
Audio codec with touch screen controller
Table
8.5).
5. Note that although SLOTREQ bits
and power management monitor
Slot 0, bits 1-0
(codec ID)
00
00
00
00
01, 10 or 11
00
© Koninklijke Philips Electronics N.V. 2002. All rights reserved.
Table
UCB1400
Action
AC ’97 controller
reads UCB1400
register
UCB1400 returns
register status
AC ’97 controller
writes UCB1400
register
UCB1400 writes
register internally
and returns
nothing
AC ’97 controller
reads or writes
secondary codec
UCB1400 ignores
commands and
returns nothing
4). The
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