cs7410 Cirrus Logic, Inc., cs7410 Datasheet - Page 26

• Manufacturer Part Number: cs7410
• Description: Cd/mp3/wma Audio Controller
• Manufacturer: Cirrus Logic, Inc.

4.2
4.3
26
Miscellaneous Pins
These pins described in
receiver interface. The main system clock can be derived from an external crystal connected between the
XTLCLK_I and XTLCLK_O pins, or can be received from the CD servo chip via the XTLCLK_I pin. The
CS7410 can accommodate a variety of input frequencies, such as 44.1 KHz x 256, x 384, or x 512.
Serial Interface Pins
The CS7410 Serial Interface pins are described in
with different protocols. The 2-wire serial port (SER1) supports industry standard protocols. This port is typ-
ically used for debug, with the CS7410 as the slave. The slave chip select address is programmable, and
1. Optional pull up or pull down resistor may be connected to configure internal ROM program
2. Required external resistor required to select processor boot from internal ROM (pull down) or external
3. Drives for a short time after reset, then reverts to high impedance
100
Pin
87
88
89
90
91
92
93
94
95
96
97
98
99
Pin
17
18
90
91
ROM (pull up).
PCM_LRCK
PCM_DO_0
PCM_DO_1
PCM_BCK
IEC958_O
DAC_3V3
DAC_RP
DAC_RP
GPIO_0
GPIO_1
GPIO_2
GPIO_3
RST_N
Name
TEST
Signal Name
XTLCLK_O
XTLCLK_I
RST_N
TEST
Type
Pwr
O4
O4
B4
B4
B4
B4
B4
B4
B4
B4
B4
Table 8
IS
I
Reset
are used for used for basic functions such as clocking, reset and infrared
O
O
O
O
O
O
-
I
I
I
I
I
I
I
Table 7. Pin Assignments (Continued)
Table 8. Miscellaneous Interface Pins
Type
O
I
I
I
Manufacturing Test
∆Σ DAC I/O Power
∆Σ DAC Right
∆Σ DAC Right
PCM_Dout[0]
PCM_Dout[1]
Negative Out
Function #1
IEC-958 Out
Positive Out
PCM_LRCK
PCM_BCK
Reset_L
GPIO[0]
GPIO[1]
GPIO[2]
GPIO[3]
Crystal output
Crystal input, or oscillator input
Asynchronous reset input, active low
Manufacturing test, tie to ground
Table
9. CS7410 has three dedicated serial ports, each
Dir
O
O
O
O
O
O
O
B
B
B
B
-
I
I
Description
Function #2
PWM_OUT
GPIO[18]
GPO[7]
GPO[8]
GPO[0]
GPO[1]
GPO[2]
GPO[3]
-
-
-
-
-
-
CS7410
Dir
O
O
O
O
O
O
O
B
-
-
-
-
-
-
DS553PP3
Note
1
1
2
1
-
-
-
-
-
-