alc203-lf Realtek Semiconductor Corporation, alc203-lf Datasheet - Page 35

• Manufacturer Part Number: alc203-lf
• Description: Two-channel Ac?97 2.3 Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

7.2.7 ATE Test Mode
To meet AC’97 rev2.3 specifications, EAPD, SPDIFO, BIT_CLK, and SDATA_IN should be floating in test mode.
7.2.8 AC-Link IO Pin Capacitance and Loading
7.2.9 SPDIF Output
Notes:
Two-Channel AC’97 2.3 Audio Codec
Setup to trailing edge of RESET#
(also applies to SYNC)
Rising edge of RESET# to Hi-Z
delay
BIT_CLK (must support ≥ 2
CODECs)
SDATA_IN
Rise time/fall time
SPDIF_OUT
Output Pin
Parameter
Duty cycle
Rise time = 100 * T
Fall time = 100 * T
Duty cycle = 100 * T
SDATA-IN, BITCLK
SDATA-OUT
50%
RESET#
(f)
(r)
/ (T
(h)
/ (T
Symbol
T
1 CODEC
Minimum
/ (T
setup2rst
T
(l)
47.5pF
(l)
off
55pF
T
+ T
+ T
(l)
45
(r)
0
+ T
ATE test mode timing diagram
(h)
(h)
)%
(h)
)%
T
)%
(h)
Minimum
T
15.0
(f)
-
31
2 CODEC
Tsetup2rst
Typical
62.5pF
55pF
T
(l)
Toff
Typical
-
-
3 CODEC
Maximum
75pF
60pF
90%
10%
10
55
Maximum
25.0
Hi-Z
ALC203 DataSheet
-
4 CODEC
62.5pF
Units
85pF
%
%
Units
ns
ns
Rev1.6