Service manual

- M4 -
929-2504-00
658-0244-03 C3ABPJ000072 512K x 32 x 4 banks SDRAM
(MT48LC2M32B2TG)
Terminal Description
pin 1: VDD : - : Positive supply voltage.
pin 2: D 0 :I/O: Data input/output.
pin 3: VDD : - : Positive supply voltage.
pin 4: D 1 :I/O: Data input/output.
pin 5: D 2 :I/O: Data input/output.
pin 6: VSS : - : Negative supply voltage.
pin 7: D 3 :I/O: Data input/output.
pin 8: D 4 :I/O: Data input/output.
pin 9: VDD : - : Positive supply voltage.
pin 10: D 5 :I/O: Data input/output.
pin 11: D 6 :I/O: Data input/output.
pin 12: VSS : - : Negative supply voltage.
pin 13: D 7 :I/O: Data input/output.
pin 14: NU : - : Not in use.
pin 15: VDD : - : Positive supply voltage.
pin 16: DQM 0 :IN: When DQM is sampled HIGH, input data
is masked during a WRITE cycle, and the
output buffers are placed in a High-Z state
during a READ cycle. DQM 0 corresponds
to D0-D7.
pin 17: WE : IN: Write enable signal input.
pin 18: CAS :IN: Column address strobe input.
pin 19: RAS :IN : Raw address strobe input.
pin 20: CS : IN: The chip select command input.
pin 21: NU : - : Not in use.
pin 22: BA 0 :IN: Bank address input.
pin 23: BA 1 :IN: Bank address input.
pin 24: A 10 :IN : Address signal input.
pin 25: A 0 : IN : Address signal input.
pin 26: A 1 : IN : Address signal input.
pin 27: A 2 : IN : Address signal input.
pin 28: DQM 2 :IN: When DQM is sampled HIGH, input data
is masked during a WRITE cycle, and the
output buffers are placed in a High-Z state
during a READ cycle. DQM 1 corre-
sponds to D8-D15.
pin 29: VDD : - : Positive supply voltage.
pin 30: NU : - : Not in use.
pin 31: D 16 :I/O: Data input/output.
pin 32: VSS : - : Negative supply voltage.
pin 33: D 17 :I/O: Data input/output.
pin 34: D 18 :I/O: Data input/output.
pin 35: VDD : - : Positive supply voltage.
pin 36: D 19 :I/O: Data input/output.
pin 37: D 20 :I/O: Data input/output.
pin 38: VSS : - : Negative supply voltage.
pin 39: D 21 :I/O: Data input/output.
pin 40: D 22 :I/O: Data input/output.
pin 41: VDD : - : Positive supply voltage.
pin 42: D 23 :I/O: Data input/output.
pin 43: VDD : - : Positive supply voltage.
pin 44: VSS : - : Negative supply voltage.
pin 45: D 24 :I/O: Data input/output.
pin 46: VSS : - : Negative supply voltage.
pin 47: D 25 :I/O: Data input/output.
pin 48: D 26 :I/O: Data input/output.
pin 49: VDD : - : Positive supply voltage.
pin 50: D 27 :I/O: Data input/output.
pin 51: D 28 :I/O: Data input/output.
pin 52: VSS : - : Negative supply voltage.
pin 53: D 29 :I/O: Data input/output.
pin 54: D 30 :I/O: Data input/output.
pin 55: VDD : - : Positive supply voltage.
pin 56: D 31 :I/O: Data input/output.
pin 57: NU : - : Not in use.
pin 58: VSS : - : Negative supply voltage.
3
2
1
OUTPUT
N.C.
VCC
GROUND
pin 59: DQM 3 :IN: When DQM is sampled HIGH, input data
is masked during a WRITE cycle, and the
output buffers are placed in a High-Z state
during a READ cycle. DQM 2 corresponds
to D16-D23.
pin 60: A 3 : IN : Address signal input.
pin 61: A 4 : IN : Address signal input.
pin 62: A 5 : IN : Address signal input.
pin 63: A 6 : IN : Address signal input.
pin 64: A 7 : IN : Address signal input.
pin 65: A 8 : IN : Address signal input.
pin 66: A 9 : IN : Address signal input.
pin 67: CKE :IN : Clock enable signal input.
pin 68: CLK : IN: The clock pulse input.
pin 69: NU : - : Not in use.
pin 70: NU : - : Not in use.
pin 71: DQM 1 :IN: When DQM is sampled HIGH, input data
is masked during a WRITE cycle, and the
output buffers are placed in a High-Z state
during a READ cycle. DQM 3 corre-
sponds to D24-D31.
pin 72: VSS : - : Negative supply voltage.
pin 73: NU : - : Not in use.
pin 74: D 8 :I/O: Data input/output.
pin 75: VDD : - : Positive supply voltage.
pin 76: D 9 :I/O: Data input/output.
pin 77: D 10 :I/O: Data input/output.
pin 78: VSS : - : Negative supply voltage.
pin 79: D 11 :I/O: Data input/output.
pin 80: D 12 :I/O: Data input/output.
pin 81: VDD : - : Positive supply voltage.
pin 82: D 13 :I/O: Data input/output.
pin 83: D 14 :I/O: Data input/output.
pin 84: VSS : - : Negative supply voltage.
pin 85: D 15 :I/O: Data input/output.
pin 86: VSS : - : Negative supply voltage.
658-0244-02 YEAM17805FP Positive Voltage Regurator 5.0V
(BA17805FP)
658-0245-02 C0FBBK000048 24-bit 2-ch DA Converter
(AK4381)
Terminal Description
pin 1: MASTER CLK :IN : Master clock input.
pin 2: BICK :IN: Audio bit clock input.
pin 3: S DATA IN :IN: Audio serial data input.
pin 4: LR CK IN :IN : Left/Right clock input.
pin 5: PDN :IN: Power down & reset signal input.
pin 6:CSN :IN: Chip selection.
pin 7:C CLK : IN: Control data clock input.
pin 8:C DTI :IN: Control data input.
pin 9: A out R- : O : Audio signal right channel negative output.
pin 10: A out R+ : O : Audio signal right channel positive output.
pin 11: A out L- : O : Audio signal left channel negative output.
pin 12: A out L+ : O : Audio signal left channel positive output.
pin 13: VSS : - : Negative supply voltage.
pin 14: VDD : - : Positive supply voltage.
pin 15: DZF R : O : Zero detection flag output.
pin 16: DZF L : O : Zero detection flag output.